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Singh, S. B.

• Constraints for People's Participation in Wasteland Afforestation Programme

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Authors

S. B. Singh

Source

Indian Forester, Vol 135, No 5 (2009), Pagination: 707-710

Abstract

No abstract

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• Response of Eucalyptus camaldulensis and Dalbergia sissoo Fertilizers in Sodic Soil

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Authors

S. B. Singh , Anubha Srivastav , S. Bhatnagar

Source

Indian Forester, Vol 131, No 9 (2005), Pagination: 1171-1177

Abstract

A field experiment was conducted in mound plantations of Dalbergia sissoo and Eucalyptus camaldulensis on water logged-sodic site. Experimental site was poor in soil nutrients (N, P and K), experiencing waterlogging for the period of 100 to 150 days in a year. Experiment consisted five treatments viz. (1) control, (2) 50 g urea, (3) 50 g each of urea and single super phosphate, (4) 50 g each of urea, single super phosphate and muriate of potash and (5) 5 g each of urea, single usper phosphate, muriate of potash and 10 g of zinc suilphate per plant in Randomized Block Design with three replications. Species did not respond for application of single super phosphate. Application of urea and muriate of potash in Dalbergia sissoo resulted for insignificant higher survival and heigbht of plants. Eucalyptus camaldulensis showed significantly higher height from one year to three years of fertilizer application but level of resonse declined with the increase of plant age. Effect of fertilizer application for increasing volume index was, however, increasing.

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• Comparative Response of Organic and Fertilizer Source of Nutrients to Terminalia arjuna in Waterlogged - Sodic Soil

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Authors

S. B. Singh

Source

Indian Forester, Vol 130, No 8 (2004), Pagination: 893-898

Abstract

A field experiment was conducted at Uppardaha village in Allahabad District of Uttar Pradesh , India to compare response of organic and fertilizer source of nutrients to Terminalia arjuna , planted on mound in waterlogged sodic soil. Four treatments applied with and without 10.0 g plant. , BHC were (i) Control , (ii) 2.0 kg plant^-1 farm yard manure , (iii) 50 g plant^-1 each of NPK through urea , single superphosphate and muriate of potash and (iv) farm yard manure plus NPK as treatment 2&3 , respectively. Experiment was conducted following Randomised Block Design in triplicate , Comparison of plant height recorded twice in a year uuder different treatments showed that farmyard manure had no response up to six months , started to maximize height after one year and resulted for significantly higher height after two years. Nutrients applied through urea , single super phosphate and muriate of potash resulted promising effect in the initial stage of growth but slowed down afterwards. After two and half years of treatment , maximum biomass was recorded in farmyard manure treated plants , which was followed by plants receiving farmyard manure plus fertilizers and fertilizers alone. Plants treated with farmyard manure showed maximum and control showed the minimum CBH and survival in plants. Application of BHC , though , increased survival and height of plants but difference in BHC treated and untreated plant was insignificant.

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• Response of Acacia nilotica to Silvicultural Practices in Waterlogged Sodic Soil

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Authors

S. B. Singh , Sanjeev Bhatnagar

Source

Indian Forester, Vol 129, No 3 (2003), Pagination: 388-392

Abstract

A field experiment was conducted on waterlogged sodic soil to see the response on Acacia nilotica to silvicultural practices. The experiment consisting of 8 treatments (control, weeding, lopping, fertilizer application and their possible combinations) was laid-out in Randomized Block Design, replicated twice. Plant height recorded at six months interval and biomass after two and half years of treatment revealed that lopping increased the plant height but it was not beneficial to increase the biomass. Fertilizer application was found to increase plant height, circumference and biomass production of the plants. Response of weeding treatment was not promising.

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• Response of Acacia nilotica to Nitrogen and Phosphorus in Waterlogged Sodic Soil

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Authors

S. B. Singh , Sanjeev Bhatnagar

Source

Indian Forester, Vol 128, No 5 (2002), Pagination: 545-550

Abstract

A field experiment was conducted in Randomized Block Design to see the response of Acacia nilotica to nitrogen (0 and 50 g N plant^-1) and phosphorus (0 , 25 , 50 , 75 and 100g phosphorus plant^-1) in water logged sodic soil. Results indicated that increment in the height and biomass production at two and half years age of Acacia nilotica plantation was not promising to nitrogen application. The application of phosphorus however , increased the plant height and its biomass. Application of 75 g plant^-1 phosphorus , was found to be optimum dose for ,Acacia nilotica in waterlogged sodic soils.

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• Effect of Nitrogen, Phosphorous and Mulch on Growth and Establishment of Pinus roxburghii

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Authors

S. B. Singh , Promod Kumar , K. G. Prasad , R. K. Singh , N. Malik

Source

Indian Forester, Vol 120, No 3 (1994), Pagination: 242-247

Abstract

A field experiment replicated four times in randomised block design on highly eroded slopy Sandy loam soil, was conducted to see the effects of two levels each of nitrogen (control and 60 kg N/ha) and phosphorus (control of 20 kg P₂O₅/ha) and mulch application (control, pine needles and local shrubs) on the mortality and growth of Pinus roxburghii transplantation. Observation recorded after 21 months revealed that application of mulches in general, and local shrubs in particular, resulted in higher height and lower mortality of plants. Effectiveness of nitrogen and phosphorus for boosting up the plant growth and retarding its mortality enhanced through their application with mulch.

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• Potential Water Requirement of Eucalyptus - A Preliminary Study

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Authors

S. B. Singh , Pramod Kumar , K. G. Prasad

Source

Indian Forester, Vol 119, No 7 (1993), Pagination: 549-552

Abstract

Factorial experiment conducted under 5 mulch (control, rice husk, pine needles, hare droppings and farm yard manure) and 3 irrigation levels (equivalent to 100, 75 and 50% of evaporation) showed reduction in biomass production but an increment in potential water use of Eucalyptus with decrease in water level. Taking 100% water addition as standard, 25 and 50% reduction in water supply brought to 25 and 37% reduction in biomass but increased water use efficiency by 5 and 26%.

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• Effectiveness of Different Nitrogen Sources on Leucaena leucocephala

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Authors

S. B. Singh , Pramod Kumar , K. G. Prasad

Source

Indian Forester, Vol 117, No 3 (1991), Pagination: 207-212

Abstract

A quadruplicate experiment In 11 × 3 factorial (11 treatments × 3 sampling time) with a control set was conducted to see the effectiveness of different N sources i.e. organic, ammonlcal, nitrate and ammonlcal + nitrate on Laucaena. leucocephalai applied through urea (U) and mud coated urea (MU), ammonium sulphate (AS), sodium nitrate (SN) and ammonium nitrate (AN) respectively @ 45 and 90 ppm. The height, biomass production, nitrogen use efficiency (NUE) and nitrogen reductage (NR) activity In plant were noted after 6, 9 and 12 months of treatments.

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• Interference between Two Species in Mixed Seeding System

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Authors

S. B. Singh , Pramod Kumar , K. G. Prasad

Source

Indian Forester, Vol 115, No 12 (1989), Pagination: 884-890

Abstract

To see tbe effect of companion seedling of Gram (Cicer arietinum), Eucalyptus (Eucalyptus tereticornis) and Kikar (Acacia nilotica), on Kikar, seedling of Gram, Kikar and Eucalyptus on Gram and seedling of Gram, Kikar and Eucalyptus on Eucalyptus; glasshouse experiments were conducted in Randomized Block Design with five replicates. Gram was harvested after two months whereas observations on growth attributes of other species were recorded at 2, 4 and 6 months interval Results showed that two seedlings of simliar species grown in same soil volume adversely affect height, ischolar_main and shoot development as compared to single seedling, particularly in advance stage of growth. Further, if legume (gram or kikar) species is sown with non-legume (Eucalyptus), seedlings of leguminous species are adversely affected whereas leguminous species benefit tbe non-leguminous species. The effect of gram was higher by 60% in fresb weight and 120% in dry weight at first stage and 20% fresh weight and 60% in dry weight at second stage over kikar whereas effect of kikar became higher over gram by 17% in fresh and 13% in dry weight at the third stage of observation.

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• Effect of Nutrients on the Growth Behaviour of Bambusa tulda in the Nursery

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Authors

A. K. Raina , K. G. Prasad , S. C. Pharasi , K. S. Kapoor , S. B. Singh

Source

Indian Forester, Vol 114, No 9 (1988), Pagination: 584-591

Abstract

An experiment comprising 3 levels of nitrogen (0, 50 and 100 ppm) 3 levels of P₂O₅, (0, 50 and 100 ppm) and 7 application dates of each, was conducted in nursery to see tbeir effect on some important growth parameters (plant height, tiller and leaf number, Collar diameter and biomass production) of Bambusa Tulda.biomass production) of Bambusa tulda. Results recorded arter 17 weeks of germination revealed that for all growth parameters, separate application of nitrogen was superior than phosphorus application but their combined applications were always better than individual application. Among the doses, N₁₀₀P₅₀ was found best. Split applications of nutrients 4, 6 and 8 weeks after germination gave best results.

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• Soil Characteristics under Introduced Cryptomeria japonica (Dhupi) in Darjeeling Himalayan Region

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Authors

Balvinder Singh , S. Nath , P. K. Das , S. B. Singh , S. K. Banerjee

Source

Indian Forester, Vol 113, No 3 (1987), Pagination: 191-201

Abstract

The nature and properties of the soils supporting Cryptomeria japonica in Darjeelling Himalayan Region were studied. The soils are acidic and contain high organic matter. The growth parameters are inversely related to the p^H and organic matter of the soils while height of plants and basal area of tbe species are positively correlated with C.E.C., exch. Ca⁺²,Mg⁺², K⁺ and available phosphorus. Total nitrogen contents of the soils are correlated positively with G.B.H. and basal area but negatively with the heights of the plants. Ranges of some of the attributes suitable for the growth of the species under more or less similar climatic conditions are assessed.

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• Relation of Age and Dominance of Tree Species with Soil Chemical Attributes in Kalimpong and Kurseong Divisions of West Bengal

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Authors

B. M. Dimri , S. B. Singh , S. K. Banerjee , Balvinder Singh

Source

Indian Forester, Vol 113, No 4 (1987), Pagination: 307-311

Abstract

No abstract

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• Changes in Attributes of Forest Soil Brought about by Termites

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Authors

S. B. Singh , S. Nath , C. B. S. Dutta , S. K. Banerjee

Source

Indian Forester, Vol 113, No 5 (1987), Pagination: 375-378

Abstract

The soils of active termite (Odontotarmes obesus) mound and unaffected surrounding Udic Ustochrepts of West Midnapore Forest Division, West Bengal were compared for their Physico-chemical properties. Results showed marked differences in contents of clay, nitrogen, potash and organic carbon which were higher in the soil of termite mound than surrounding one. The termite mound may account for better performance of trees and plants as fertility index of mound soil was found higher than the surrounding soil.

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• Variations in Properties of Soils Brought about by Termite Activity on Plants

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Authors

S. B. Singh , S. K. Gangopadhyay , S. K. Banerjee

Source

Indian Forester, Vol 113, No 11 (1987), Pagination: 744-749

Abstract

Properties of termite (Odontotormes obesus) galleries developed on the stem of different living plants and termite mounds of the area Were compared. The study revealed that galleries. Contained greater concentration of calcium, magnesium and potassium than the mounds suggesting that the activities of termite, during gallery formation enhanced the nutrient status of the medium. The present study shows that the enhanced nutrients were derived from the bark of the plants used by termite as food and concentrations of the nutrients in the galleries depended both on the concentration of nutrients in the bark and on the amount of bark used as termite food.

Keywords

Termite Soil Properties

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• Response of Two Year Old Pinus patula to N, P and K Fertilization

Abstract Views :179  |  PDF Views:0

Authors

S. B. Singh , K. G. Prasad , G. N. Gupta , G. S. Maurya

Source

Indian Forester, Vol 112, No 1 (1986), Pagination: 38-42

Abstract

Influence of N, P, K fertillzation was studied in two year old stand of Pinus patula at Paymund, Ooty. Trees smaller than 2m responded to 20kg of N/ha and also to 15kg of P₂O₅ whereas, the trees more than 3m tall showed growth response to nitrogen only. Nitrogen and phosphorus interaction was not significant, Phosphorus × potassium interaction was positive on growth of trees smaller than 2m. Nitrogen and potossium relationship was antagonistic in all plants. The study indicates the need to carry out comprehensive experimental trials on methods of fertilization in pine stands.

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• Forest Soil Cum Vegetation Survey and Classification with Special Reference to South India. II: Sampling Intensity

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Authors

S. K. Sharma , K. G. Prasad , M. George , S. B. Singh

Source

Indian Forester, Vol 112, No 5 (1986), Pagination: 417-425

Abstract

While various methods are available for collection of soil and vegetation data for further processing, no information is available from South Indian Forest, on the intensity of sampling for their survey, classification and mapping. An area of about 9000 ha in Coimbatore forest division was surveyed and both soil and vegetation data were collected at varying grid distances. The data were grouped, classified and mapped. Chi-square value of heterogeneity increased when the grid length was increased across the contour than along the contour. Considering the time and cost involved in survey, analysis of samples, processing of data and preparation of report, by compromising with accuracy, grid distance of 2km along the contour and 1 km across the contour may be used for forest soil and vegetation survey, classification and mapping.

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• Edaphic Requirements of Tropical Pines with Special Reference to Tamil Nadu

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Authors

K. G. Prasad , P. A. Abdul , S. B. Singh

Source

Indian Forester, Vol 112, No 9 (1986), Pagination: 801-807

Abstract

Established Pinus patula plantations of age below 10 years were selected and the soils were examined for their morphological, physical and chemical properties. These soils contain 4.2% organic carbon, 0.024% available P₂O₃ 0.133% exchangeable K⁺, 6.5 me% exchangeable Ca²⁺ and 3.5 me% exchangeable Mg²⁺. The P. patula plantation can be grown successfully in Tamil Nadu at altitudes around 1900 m msl on gentle slopes having deep, well drained slightly acidic sandy clay loam soil.

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• Change in Soil Properties under Different Plantations of the Darjeeling Forest Division

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Authors

S. B. Singh , S. Nath , O. K. Pal , S. K. Banerjee

Source

Indian Forester, Vol 111, No 2 (1985), Pagination: 90-98

Abstract

Investigation on the soil properties of the darjeeling Forest Division(W.B.) was carried out to see the changes due to different forest vegetations (Pinus patula, Cryptomeria japonica, tectona grandis, Shorea robusta and mixed broad leaf species). Highest content of organic matter and lowest soil pH were noticed in the site of C. japonica plantation; calcium content was maximum in teak(Tectona grandis) area. The solls under C. japonica had minimum total bases nad teak the maximum and more than half of the total bases in teak area was contributed by calcium. Mixed vegetations reflected best performance on soil properties among the plantations undertaken in the present investigation. Results showed that vegetational cover affects the soil properties and it is suggested that in order to maintain natural ecological balance and avoid drastic changes in soil properties, mixed plantation should be prefferred to pure plantation.

Keywords

Soil Properties, Effect of Vegetation, Darjeeling Forest Division

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• Methods of Fertilizer Application in Pinus patula

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Authors

S. B. Singh , K. G. Prasad , S. F. Hillary , G. S. Maurya

Source

Indian Forester, Vol 111, No 9 (1985), Pagination: 693-697

Abstract

Randomized block design field experiment to evaluate different methods of fertilizer application in two year old Pinus patula plantation was conducted at Paymund. Ooty. The treatment consisted of control (T_o) and fertilizer application (100 g urea+100 g superphosphate+25 g muriate of potash) by broadcast (T₁) intrench to full circumference equivalent to canopy diameter (T₂), and in trench to full circumference equivalent to canopy diameter (T₃) replicated 3 times. Intially broadcast application increased height growth. After 3 months, trench application to full circumference (T₃), was superior over other methods of fertilizer application.

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• Studies on Changes in Soil Properties under Different Vegetations

Abstract Views :186  |  PDF Views:0

Authors

K. G. Prasad , S. B. Singh , G. N. Gupta , M. George

Source

Indian Forester, Vol 111, No 10 (1985), Pagination: 794-801

Abstract

Investigation on changes in soil properties owing to conversion of natural forests into mixed and teak plantations were carried out. Observations after 40 years of such conversion, indicate higher loss of soil fertility (organic C, P₂0₅ and Mg) under teak plantation than mixed plantation. Initiation of illuviation process was also noted under later. Morphological features, however, remained unaffected. Nonetheless, the study suggests more comprehensive studies on this aspect.

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• Genesis of Red and Lateritic Forest Soils of West Bengal on Catenary Basis: Part II. Physicochemical Properties

Abstract Views :229  |  PDF Views:0

Authors

D. K. Pal , S. Nath , S. B. Singh , S. K. Banerjee

Source

Indian Forester, Vol 111, No 4 (1985), Pagination: 195-207

Abstract

Three catenas comprising of ten soil profiles on different physiographic positions were investigated. The paper deals with the physical and chemical characteristics of the soils. It is observed that in the foot slope of the catena' the soils are dominated by the illuvial materials transported from the higher one. Down the slopes the soils are deeper' heavy in texture with more developed pedogenic process. All the soils have been classified upto subgroup level according to the Taxonomic system of classification.

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• Fertilization in Eucalyptus grandis on Severely Truncated Soil. II: Biomass Producnon

Abstract Views :213  |  PDF Views:0

Authors

K. G. Prasad , G. N. Gupta , S. B. Singh , S. Mohan , J. Madhavan Nair , A. D. Doe

Source

Indian Forester, Vol 110, No 2 (1984), Pagination: 142-149

Abstract

Biomass production of different components (ischolar_main, stem, twig and leaf) of one year old Eucalyptus grandis due to different doses of urea and superphosphate application at Minmutti, Kerala, was assessed. Application of nitrogen and phosphorus increased biomass production of all tree components. Though, response was greater due to urea appliclltion than superphosphate application, combined application of N and P increased biomass production of all plant parts tremendously. Similar to biomass production fertilizer use efficiency was also better due to N and P application alone or in combination. Considering biomass production and fertilizer use efficieney, the treatment receiving 75 g urea along witb 73 g superphosphate found to be the most efficient treatment.

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• Studies on Changes in Soil Properties in Termites (Odontotarmes obesus) Gallaries Developed on Different Tree Species

Abstract Views :218  |  PDF Views:0

Authors

S. B. Singh , A. K. Singh , N. G. Tdtav

Source

Indian Forester, Vol 108, No 12 (1982), Pagination: 751-756

Abstract

Termite gall aries of Odontotermis obesus collected from the stems of different aged some living forest species showed lower calcium and higher available nitrogen, phosphorus and potash than the soil samples of the area. In general, available nitrogen, pllosphoros and potash were found in the order of termite's gallaries collected from the stem of Boswellia serrata > Madhuca indica> Acacia catechu> Bucchania lanzen > Shorea robusta> Seccopetallum tomentosa > Diospyros melanoxylon.

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• Linear Programming for Determining Quantitative Composition of Species in a Mixed Plantation

Abstract Views :159  |  PDF Views:0

Authors

S. B. Singh

Source

Indian Forester, Vol 107, No 11 (1981), Pagination: 686-692

Abstract

This paper deals with application of Linear Programming for Determining Quantitative Composition of Species in a Mixed Plantation. Given Constraints of area, Commitment to supply certain minimum quantities of species and the cost of raising Plantation a model has been framed for maximising monetory yield under the given sets of Constraints. The solution has been found by using Simplex Method.

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• Effect of Biofertilizers on Growth, Yield and Economics of Rice (Oryza Sativa L.)

Abstract Views :207  |  PDF Views:0

Authors

Rama Kant Singh ¹, Pankaj Kumar ¹, Birendra Prasad ², S. B. Singh ¹

Affiliations
1 Krishi Vigyan Kendra, KATIHAR (BIHAR), IN
2 Regional Research Station, Agwanpur, SAHARSA (BIHAR), IN

Source

International Research Journal of Agricultural Economics and Statistics, Vol 6, No 2 (2015), Pagination: 386-391

Abstract

A field experiment was conducted during rainy season (Kharif) of 2012-13 at farmer field of Katihar district adopted by Krishi Vigyan Kendra, Katihar under Bihar Agriculture University, Sabour, Bhagalpur to study the effect of biofertilizers on growth, yield and economics of rice. The experiment was laid out in Randomized Block Design (RBD) with three treatments and ten replications. Rice crop was significantly higher value of plant height, number of tillers, number of grain per panicle, test weight (g), grain and straw yield (qha^-1), benefit cost ratio. Maximum grain yield 65 qha^-1 was recorded with 150 kg N + 60 kg P₂O₅ + 40 kg K₂O with Azotobactor + PSB @ 5kg ha^-1. There was significant improvement in yield attributes and economics of rice due to application of NPK @ 150+60+40+ Azotobactor and PSB 5 kg ha^-1.

Keywords

Rice, Bio-Fertilizers, Growth, Yield, Economics.

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• Spatial Variability in Temporal Trends of Precipitation and its Impact on the Agricultural Scenario of Mizoram

Abstract Views :220  |  PDF Views:117

Authors

S. Saha ¹, D. Chakraborty ², B. U. Choudhury ², S. B. Singh ¹, N. Chinza ³, C. Lalzarliana ⁴, S. K. Dutta ¹, S. Chowdhury ¹, T. Boopathi ¹, Lungmuana ¹, A. R. Singh ¹, S. V. Ngachan ²

Affiliations
1 ICAR Research Complex for NEH Region, Mizoram Centre, Kolasib 796 081, IN
2 ICAR Research Complex for NEH Region, Umiam 796 103, IN
3 Directorate of Economics and Statistics, and Government of Mizoram, 796 001, IN
4 Directorate of Crop Husbandry, Government of Mizoram, 796 001, IN

Source

Current Science, Vol 109, No 12 (2015), Pagination: 2278-2282

Abstract

Long-term monthly rainfall observations (1986-2014) were analysed for 12 rain-gauge stations installed at variable altitudes of Mizoram. Our objective was to assess the temporal change in the standardized precipitation index (SPI) values at different timescales using Mann-Kendall trend tests. Significant reductions in post-monsoon and winter rainfall were recorded for most of the sites. Increasing dryness during the winter months may intensify the acute water shortage in Mizoram. Our results emphasize the altitudinal insensitivity of mean monthly rainfall trend and prove the urgent need for adopting suitable water management practices to cope with the water scarcity problem to increase the resiliency of rabi agriculture in Mizoram in near future.

Keywords

Agriculture, Rainfall Pattern, Standardized Precipitation Index, Spatial Variability.

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References

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• Ravindranath, N. H. et al., Climate change vulnerability profiles for North East India. Curr. Sci., 2011, 101(3), 384–394.
• Jhajharia, D., Shrivastava, S. K., Sarkar, D. and Sarkar, S., Temporal characteristics of pan evaporation trends under the humid conditions of northeast India. Agric. For. Meteorol., 2009, 149, 763–770.
• Jain, S. K., Kumar, V. and Saharia, M., Analysis of rainfall and temperature trends in northeast India. Int. J. Climatol., 2013, 33(4), 968–978.
• Saikia, U. S. et al., Shift in monsoon rainfall pattern in the North Eastern region of India post 1991. J. Agrometeorol., 2013, 15(2), 162–164.
• WMO, Standardized Precipitation Index User Guide. (eds Svoboda, M., Hayes M. and Wood, D.) WMO-No. 1090, World Meteorological Organization, Geneva, Switzerland, 2012, pp. 8–24.
• McKee, T. B., Doesken, N. J. and Kleist, J., The relationship of drought frequency and duration to time scales. In Proceedings of the IX Conference on Applied Climatology. American Meteorological Society, Boston, MA, 1993, pp. 179–184.
• Naresh Kumar, M., Murthy, C. S., Sesha Sai, M. V. R. and Roy, P. S., On the use of Standardized Precipitation Index (SPI) for drought intensity assessment. Meteorol. Appl., 2009, 16, 381–389.
• Jha, S., Sehgal, V. K., Raghava, R. M. and Sinha, M., Trend of standardized precipitation index during Indian summer monsoon season in agroclimatic zones of India. Earth Syst. Dyn. Discuss., 2013, 4, 429–449.

• Neoproterozoic Palaeomagnetic Results of Jodhpur Sandstone, Marwar Supergroup, Western Rajasthan

Abstract Views :195  |  PDF Views:2

Authors

G. V. S. Poornachandra Rao ¹, S. B. Singh ¹, K. J. Prasanna Lakshmi ¹

Affiliations
1 Palaeomagnetism Laboratory, National Geophysical Research Institute, Hyderabad-500007, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 69, No 5 (2007), Pagination: 901-908

Abstract

The Jodhpur Sandstone (Marwar Supergroup) is investigated from three sites in western Rajasthan, India, using thermal and AF demagnetization techniques. The Characteristic Remanent Magnetic (ChRM) direction isolated is having a normal polarity of Dm=19.59°, Im=+46.27° (K=206.19, α₉₅= 5.63°, N=3) and yielded a Virtual Geomagnetic Pole (VGP) at λp=32.4° S, Lp = 51.3° E (δp=4.63°, δm=7.22°). The palaeomagnetic data of the Jodhpur Sandstone is in good agreement with that of the Upper Rewa Sandstone of the Vindhyan Supergroup rocks that are correlated with the Jodhpur Sandstone on lithological similarities. The Malani Rhyolite overlain by the Jodhpur Sandstone with well constrained radiometric and palaeomagnetic results thus assign a maximum age of < 745±10 Ma to the Jodhpur Sandstone and in turn to the Rewa Sandstone of the Vindhyan Supergroup which were correlated with them. This correlation helps in constraining the age of the Rewa Group rocks in the Upper Vindhyans, which are devoid of any fossil evidence and suitable radiometric material to date them.

Keywords

Palaeomagnetism, Neoproterozoic, AF Demagnetization, Rodinia, Jodhpur Sandstone, Marwar Supergroup, Rajasthan.

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• Prediction of Electrical Resistivity Structures Using Artificial Neural Networks

Abstract Views :191  |  PDF Views:2

Authors

U. K. Singh ¹, R. K. Tiwari ², S. B. Singh ², S. Rajan ¹

Affiliations
1 National Centre for Antarctic & Ocean Research, Vasco Goa - 403 804, IN
2 National Geophysical Research Institute, Hyderabad 500 007, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 67, No 2 (2006), Pagination: 234-242

Abstract

The artificial neural network (ANN) technique is at present most efficient and modern tool for parameter estimation and inversion of geophysical data. This paper deals with the application of ANN technique for the inversion of vertical electrical resistivity sounding(VES) data obtained from the NNW SSE part of Barmer district, Rajasthan. The efficiency of ANN technique is tested first on synthetic resistivity data generated from the numerical model and then trained on the actual VES field data. The analyses predict sediment thickness of the order of 172 m at Rawtra (S 15, and indicate that there is possibility of fresh aquifers at all sounding locations along the profile except at Sonadi (S 1). These results match with the depth-Resistivity structure obtained by the conventional method. However, the high accuracy and faster ANN imaging system seems to have highly correlated with that of conventional method for mapping the complex subsurface resistivity structures with less ambiguity. These finding also correlate remarkably well with known drilling results and geologic boundaries.

Keywords

Artificial Neural Network, Backpropagation Algorithm, VES Data, Resistivity Layer Parameters, Fresh Aquifer, Saline Aquifer, Barmer District, Rajasthan.

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• The Controls to the Variation in Depth to Fresh/Saline Interface in the Groundwater of Southwest District, NCT, Delhi - a Case Study

Abstract Views :200  |  PDF Views:118

Authors

Shashank Shekhar ¹, S. B. Singh ¹, Saleem Romani ¹

Affiliations
1 Central Ground Water Board, 18/11 Jamnagar House, Mansingh Road, New Delhi-11, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 66, No 1 (2005), Pagination: 17-20

Abstract

The hydrogeology of the southwest district of National Capital Territory (NCT) Delhi is challenging on the account of the fact that the quality of groundwater in the district shows horizontal and vertical variation with respect to salinity. The present paper tries to study the variation in the depth to fresh (electrical conductivity equal to or below 1500-2000 micro siemens per cm)/saline (electrical conductivity above 1500-2000 micro siemens per cm) water interface of the district and locate the factors controlling the variation in the depth to fresidsaline interface in the groundwater of the district. The map showing variation in the depth to fresh/saline interface In the groundwater of the district was studied Vis-a-Vis geology and cultural practices In the district, in order to identify the factors controlling the variation in the depth to fresh/saline water interface in the groundwater of the district.

Keywords

Hydrogeology, Groundwater, Salinity Zone, Delhi Area.

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• An Integrated Geophysical Approach for Groundwater Prospecting: A Case Study from Tamil Nadu

Abstract Views :189  |  PDF Views:2

Authors

S. B. Singh ¹, Jimmy Stephen ¹, Y. Srinivas ¹, U. K. Singh ¹, K. P. Singh ¹

Affiliations
1 National Geophysical Research Institute, Hyderabad - 500 007, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 59, No 2 (2002), Pagination: 147-158

Abstract

Delineation of groundwater resources in hard rock terrains is one of the important topics to be treated with a more advanced approach than simple one-dimensional attitude, particularly when looking for deeper water saturated horizons. The present study introduces an integrated geophysical approach to identify structural features such as fractures, weak zones and intrusive dyke bodies, which can control and host potable groundwater at greater depths. The study is conducted in an area of about 8 km² along east coast of Tamil Nadu, which has been identified as a major rainshadow zone. Geophysical measurements were carried out in very closely spaced grids making use of resistivity, magnetic and electromagnetic techniques. The sensitivity of each technique to different rock properties in varying directions has been considered to resolve the problem. A major weak zone running in SW-NE direction is demarcated which is characterised by many intrusive dyke bodies. The conductivity distributions at different depths throw light on many structural features. The varying thickness of weathered rock calculated from the Horizontal Loop Electromagnetic (HLEM) and Deep Resistivity Sounding (DRS) studies for the entire area reflects the extension of weathering associated with dyke emplacements. Geo-electrical sections obtained through DRS studies, concentrated mainly along the weak zone have shown the occurrence of potable groundwater resource controlled by structural features.

Keywords

Integrated geophysics, Groundwater, Hardrock Terrain, Deep Resistivity sounding, Horizontal Loop Electromagnetics (HLEM), Magnetic Method, Tamil Nadu.

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• Neoproterozoic Palaeomagnetic Results of Jodhpur Sandstone, Marwar Supergroup, Western Rajasthan

Abstract Views :154  |  PDF Views:192

Authors

B. S. Paliwal ¹, G. V. S. Poornachandra Rao ², S. B. Singh ², K. J . Prasanna Lakshmi ²

Affiliations
1 Department of Geology, Jai Narain Vyas University, Jodhpur - 342 005, IN
2 NGRI, Hyderabad, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 71, No 1 (2008), Pagination: 143-145

Abstract

No Abstract.

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• Effect of Split Application of Nitrogen on Performance of Wheat (Triticum aestivum L.)

Abstract Views :347  |  PDF Views:0

Authors

R. K. Singh ¹, Pankaj Kumar ¹, Birendra Prasad ², A. K. Das ¹, S. B. Singh ¹

Affiliations
1 Krishi Vigyan Kendra, Katihar (Bihar), IN
2 Regional Research Station, Agwanpur, Saharsa (Bihar), IN

Source

International Journal of Agricultural Sciences, Vol 12, No 1 (2016), Pagination: 32-37

Abstract

A field experiment was conducted at farmer field of Katihar district during two consecutive years of 2012-13 and 2013-14 to study the yield of wheat as influenced by split application of nitrogen. The soil is non-calcareous light gray in colour flood plain belongs to the alluvial gangetic plain (Agro climatic zone II). The study was done in Randomized Block Design with four treatments and ten replications with HD 2733 wheat variety to evaluate the observation regarding growth attributes and yield components of individual plant parameters were recorded from randomly selected plants in each plot. The evaluated traits were plant population (m^-2), plant height (cm), bearing tillers plant^-1 (no.), non-bearing tillers plant^-1 (no.), spikelets spike^-1 (no.), fertile spikelets spike^-1 (no.) non-fertile spikelets spike^-1 (no.), 1000-seed weight (g), seed yield (t ha^-1) and straw yield (t ha^-1). Results indicated that the use of three split N applications increased all growth and yield attributes. The best N split strategy corresponded to three N splits: at planting, crown ischolar_main initiation (CRI), and panicle initiation (PI) stages.

Keywords

Wheat, Split Doses, Nitrogen, Growth, Yield Components.

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References

• Chopra, C.L. and Kanwar, J.S. (1991).Analytical agricultural chemistry, Kalyani Publication, NEW DELHI, INDIA.
• Deshmukh, S.C., Tahtore, A.S. and Sinha, N.K. (1994). Effect of split application of nitrogen and phosphorus in irrigated wheat. Crop Res. (Hisar), 8 (3):493-498.
• Fisher, R.A., Howe, G. N. and Ibrahim, Z. (1993). Irrigated spring wheat and timing and amount of nitrogen fertilizer. I. Grain yield and protein content. Field Crops Res., 33:37-56.
• Gill, M.S. and Sandhu, G.R. (1963). Study of some agronomic factors affecting the maximum yield of wheat under Lyallpur conditions West Pakistan. J.Agric. Res., 1(3):5-11.
• Gobi, Ramesh, S., Pandian, B.J., Chandrasekaran, B. and Sampathkumar, T. (2006). Evaluation of crop establishments and split application of N and K on growth, yield attributes, yield and economics of hybrid rice CoRH2. Asian J. Plant Sci., 5 (6):1022-1026.
• Gravelle, W. D., Alley, M. M., Braun, D. E. and Jesepth, K. D. S. (1989). Split sprig nitrogen application effects on yield, lodging and nutrient uptake of soft red winter wheat. USA J. Prod. Agric., 1(3):249-256.
• Haq (1991). Effect and planting geometry and time of application of nitrogen on growth and yield and late sown wheat. M.Sc. (Hons) Thesis, Department of Agronomy, University of Agriculture, FAISALABAD, PAKISTAN.
• Islam, M.S. (1990). Nutrient status of some soils of Bangladesh. In: Proc. International symposium on paddy soil fertility. Bangladesh Agric. Res. Council, Dhaka, (BANGLADESH) .
• Khan, R.A., Tomar, S. S., Yadav, N.S., Sharma, R.B., Kushwah, P.S. and Jain, M.P. (1990). Response of wheat to irrigation and nitrogen. Indian J. Agron., 35 (4):414-416.
• Malik, C.V. S. (1981). Response of wheat varieties to different levels of nitrogen. Indian J. Agron., 26 (1): 93-96
• Olsen, S.R., Cole, C.V., Watanable, F.S. and Dean, L.A. (1954). Estimation of available phosphorous in soils by extraction with sodium bicarbonate. U.S. Dept. Agri. Cire. 939.
• Ortiz-Monasterio, I., Sayre, K.D., Pena, J. and Fisher, R.A. (1994). Improving the nitrogen use efficiency of irrigated spring wheat in the Yaqui Valley of Mexico. Trans. 15th World Congr. Soil Sci., 5 (b):348-349
• Pali and Sharma, R.S. (1992). A note on response of semi irrigated dwarf wheat to varying rates and methods of nitrogen application. Haryana J. Agron., 6 (1):87:88.
• Prasad, U.K., Pandey, R.D., Prasad, T. N. and Jah, A.K. (1987). Effect of irrigation and nitrogen on wheat. Indian J. Agron., 32:310-313.
• Rahman, M. A., Karim, A. J. M. S., Haque, M. M. and Saifuddin, K.M. (1999). Water use, yield and yield component of wheat under irrigation and nitrogen application in terrace soil of Bangladesh. Ann. Bangladesh. Agric., 9(2): 191-204.
• Rahman, M. A., Karim, A. J. M. S., Shaheed, M. A. and Samad, M.A. (2000). A study on the effect of irrigation and nitrigen fertilization on uptake and efficiency of nitrogen in wheat. Bangladesh. J. Agric. Res., 25(4):578-583.
• Rahman, M.A., Sufian, M. A., Saifuzzaman, M. and Chikushi, J. (2002). Nitrogen management in rice-wheat alternating cropping system and wheat genotype identification preferable to surface seeding condition. J. Fac. Agric. Kyushu Univ., 46:295-301.
• Rajput, R.L. and Verma, O. P. (1994). Effect of split and modified source of urea on the yield of irrigated wheat. Indian J. Agron., 39 (3):403-405.
• Razzaque, M.A., Hossain, A.B.S. and Hossain, M.A. (1980). Effect of nitrogen rates and their time of application on HYV wheat. Bangladesh J. Agric. Res., 1:33-40.
• Sadat, M.N., Rahman, M.A., Miah, M.N.A., Ara, M. I. and Al Azad, M.A.K. (2008). Effect of split application of nitrogen on yield and grain protein content of wheat. B.R.P. J., 4:285-296.
• Sarker, M. A. Z., Miah, M. G., Hamid, A., Haider, J. and Hashem, A. (1997). Effect of nitrogen level and duration of weed competition on weed biomass, yield and yield attributes of wheat. Ann. Bangladesh Agric., 7(1):1-7.
• Selvaraj, N., Irulappan, I. and Vedamuthu, P.G.B. (1993). Effect of organic and inorganic fertilizers on foliage and bulb characteristics in garlic (Allium sativumL.). South Indian Hort., 41:350-354.
• Shakir, M.Y. (1970). Effect of the time of application of nitrogenous fertilizers on the yield of wheat. J. Agric. Res., 8 (4):356-359.
• Subbaiah, B.V. and Asija, G.L. (1956).A rapid method for the estimation of available nitrogenin soil. Curr. Sci., 25:259-260.
• Tandon, H.L.S. (1993). Methods of analysis of soil, plants, waters and fertilizers. Fertilizers Development and consultation organization, NEW DELHI, INDIA.

• Record of Natural Enemies of Sugarcane Top Borer, Scirpophaga excerptalis Wlk. from Deoria, Uttar Pradesh

Abstract Views :184  |  PDF Views:118

Authors

K. P. Pandeya ¹, S. B. Singh ¹, H. N. Singh ¹

Affiliations
1 G.S. Sugarcane Breeding and Research Institute, Deoria - 274407, U.P., IN

Source

Journal of Biological Control, Vol 8, No 1 (1994), Pagination: 53-53

Abstract

Field surveys were conducted during the year 1990-91 to record the natural enemy complex of sugarcane top borer in Deoria district of Uttar Pradesh. Affected cane tops were collected from sugarcane field having different stages of parasitised and healthy egg- masses, larvae and pupae of Scirpophaga excerptalis and kept in specimen jars covered with fine muslin cloth at 28 ± 2°C and 65 ± 5% RH for the emergence of natural enemies. The natural enemies emerged were preserved and identified by .Commonwealth Institute of Entomology, United Kingdom.

Keywords

Scirpophaga excerptalis, Parasitoids.

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• Thinning of Granitic-Gneissic Crust below Uplifting Hyderabad Granitic Region of the Eastern Dharwar Craton (South Indian Shield): Evidence from AMT/CSAMT Experiment

Abstract Views :207  |  PDF Views:0

Authors

S. B. Singh ¹, G. Ashok Babu ¹, B. Veeraiah ¹, O. P. Pandey ¹

Affiliations
1 National Geophysical Research Institute, (Council of Scientific & Industrial Research), Uppal Road, Hyderabad - 500 007, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 74, No 6 (2009), Pagination: 697-702

Abstract

Hyderabad granitic region (HGR) forms one of the most unusual geotectonic segment of the south Indian shield. Analysis of multiparametric geological, geophysical and IGS-GPS studies have earlier suggested that this region is neotectonically uplifting at a rapid rate. We propose that consequent to such uplift, only a thin veneer of surface granitic layer now remains. In order to quantitatively examine the thickness of highly resistive granitic-gneissic crust below HGR, a audio-magnetotelluric (AMT)/controlled source AMT (CSAMT) experiment was conducted at three separate locations, situated about 50 km east of Hyderabad. The study reveals a maximum thickness of 5.5 to 6.0 km for the granitic - gneissic crust beneath HGR, which is underlain by thick low resistive exhumed intermediate (granulitic ?) crust. This finding is in sharp contrast to that of a thick granitic-gneissic crust (15-20 km) usually found in comparable late Archaean terrains elsewhere.

Keywords

Hyderabad Granitic Region, Audio-Magnetotellurics, Uplift, Resistive Crust, Granitic-Gneiss, Granulites, Crustal Velocity, Dharwar Craton.

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References

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• CHRISTENSEN, N.I. and MOONEY, W.D. (1995) Seismic velocity structure and composition of the continental crust: a global view. Jour. Geophys. Res., v.100( B7), pp.9761-9788.
• DIVAKARA RAO, V. (1996) Metallogeny in granites - the Indian context. In: Proceedings of the International Symposium on Applied Geochemistry, Osmania University, Hyderabad, India, pp.223-228.
• KENNETT, B.L.N., ENGDAHL, E.R. and BULAND, R. (1995) Constraints on seismic velocities in the Earth from traveltimes, Geophys. Jour. Internat., v.122, pp.108-124.
• KUMAR, P., YUAN, X., RAVI KUMAR, M., KIND, R., LI, X. and CHADHA, R.K. (2007) The rapid drift of Indian tectonic plate. Nature, v.449, pp.894-897.
• PANDEY, O.P. and AGRAWAL, P.K. (1999) Lithospheric mantle deformation beneath the Indian cratons. Jour. Geol., v.107, pp.683-692.
• PANDEY, O.P., AGRAWAL, P.K. and CHETTY, T.R.K. (2002) Unusual lithospheric structure beneath the Hyderabad granitic region, eastern Dharwar craton, south India. Phys. Earth Planet. Inter., v.130, pp.59-69.
• PANDEY, O.P., CHANDRAKALA, K., PARTHASARATHY, G., REDDY, P.R. and KOTI REDDY, G. (2009) Upwarp high velocity mafic crust, subsurface tectonics and cause of intraplate Latur-Killari (M 6.2) and Koyna (M 6.3) earthquakes, India - A comparative study. Jour. Asian Earth Sci., v.34, pp.781-795.
• RAI, S.S., PRIESTLY, K., SURYAPRAKASAM, K., SRINAGESH, D., GAUR, V.K. and DU, Z (2003) Crustal shear velocity structure of the south India shield. Jour. Geophys. Res. Lett., v.108( B2) 2088, doi:10.1029/2002JB001776.
• RAMBABU, H.V. and PRASANTI LAKSHMI, M. (2005) A note on geophysical mapping of the granulite terranes surrounding the Godavari Basin. Jour. Geol. Soc. India, v.65, pp.211-216.
• RANTSMAN, E.YA., CHETTY, T.R,.K., RAO, M.N., GLASKO, M.P., ZHIDKOV, M.P. and GORSHKOV, A.I.(1995) Explanatory Broacher Map of morphostructural zoning of the Himalayan belt Himalayan Fore Deep and the Indian shield. Published by D.S.T., New Delhi, India, and Russian Academy of Sciences, Moscow, Russia, pp.29.
• RASTOGI, B.K., BERGMAN, E.A. and ENGDHAL, E.R. (2005) Improved earthquakes locations and estimation of Pn and Sn path anomalies for India using multiple event relocation and reference events. Curr. Sci., v.88, pp.1586-1591.
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• Multi COB-Bearing Popcorn (Puakzo) Maize:A Unique Landrace of Mizoram, North East, India

Abstract Views :373  |  PDF Views:82

Authors

A. Ratankumar Singh ¹, S. B. Singh ², S. K. Dutta ³, T. Boopathi ¹, Lungmuana ⁴, S. Saha ⁴, M. Thoithoi Devi ⁴, N. Hemanta Singh ¹

Affiliations
1 Division of Crop Protection, ICAR-Research Complex for NEH Region, Mizoram Centre, Kolasib 796 081, IN
2 Division of Social Science, ICAR-Research Complex for NEH Region, Mizoram Centre, Kolasib 796 081, IN
3 Division of Horticulture, ICAR-Research Complex for NEH Region, Mizoram Centre, Kolasib 796 081, IN
4 Division of Natural Resource Management, ICAR-Research Complex for NEH Region, Mizoram Centre, Kolasib 796 081, IN

Source

Current Science, Vol 110, No 8 (2016), Pagination: 1392-1393

Abstract

Mizoram is a mountainous (Lushai hill range) state with closely spaced intermountain valleys, demographically dominated by indigenous tribes (Mizo) constituting 94.4% of the total population. These tribal populations ensure the conservation of plant genetic resources for the future, for the food and nutritional security of an increasing population. Since 1976, in the northeastern hill region intensive collections of maize landraces were made by ICAR-NBPGR, New Delhi and diversity of landraces maize from this region comprised 36% of the total collection from whole India, which was the highest number of accession among other regions.

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• Ug99:Saga, Reality and Status

Abstract Views :322  |  PDF Views:77

Authors

Pramod Prasad ¹, S. C. Bhardwaj ¹, Hanif Khan ¹, O. P. Gangwar ¹, Subodh Kumar ¹, S. B. Singh ¹

Affiliations
1 Regional Station, ICAR-Indian Institute of Wheat and Barley Research, Shimla 171 002, IN

Source

Current Science, Vol 110, No 9 (2016), Pagination: 1614-1616

Abstract

Wheat, the second most important cereal crop after rice, plays an important role in food and nutritional security worldwide. Wheat rusts, viz. black or stem rust (Puccinia graminis f. sp. tritici), brown or leaf rust (P. triticina) and yellow or stripe rust (P. striiformis), capable of spreading aerially over long distances, are highly variable and devastating pathogens.

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• Morpho-Agronomic Diversity in Pole-Type Common Bean (Phaseolus vulgaris L.) Landraces from Lushai Hills of North-East India

Abstract Views :180  |  PDF Views:110

Authors

S. K. Dutta ¹, S. B. Singh ¹, T. Boopathi ¹, A. R. Singh ¹, Y. Ramakrishna ¹

Affiliations
1 ICAR-RC NEH Region, Mizoram Centre, Kolasib - 796 081, IN

Source

Journal of Horticultural Sciences, Vol 10, No 2 (2015), Pagination: 177-182

Abstract

The present study was based on morphological and agronomical characterization of 23 pole-type common bean (Phaseolus vulgaris L.) landraces collected from Lushai hills of North-East India. Extensive variation in plant and seed traits was found in 16 morphological and agronomical characters. Cluster analysis based on Euclidean distance grouped the genotypes into five main branches, reflecting their growth type and reproductive traits. Significant positive or negative correlation was observed among important traits. Principal component analysis was used for assessing patterns of variation by accounting for all the 10 quantitative and six qualitative variables together. Ordination among accessions showed that the first five principal components had Eigen values greater than one, and cumulatively accounted for 72% of the variation. Characterization based on quantitative and qualitative traits enabled separation of accessions into various groups representing landraces with distinct characters.

Keywords

Common Bean, Pole-Type, North-East India, Landraces, Principal Components, Morphological Characterization.

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References

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• Beebe, S., Gonzalez, A.V. and Rengifo, J. 2000. Research on trace minerals in the Common bean. Food Nutr. Bull., 21:387-391
• Beyene, T.M. 2013. Morpho-agronomical characterization of taro (Colocasia esculenta) accessions in Ethiopia. Plant, 1:1-9
• Bouis, H.E. 2003. Micronutrient fortification of plants through plant breeding: Can it improve nutrition in man at low cost? Procs. Nutr. Soc., 62:403-411
• Broughton, W.J., Hernandez, G., Blair, M.W., Beebe, S.E., Gepts, P. and Vanderleyden, J. 2003. Beans (Phaseolus spp.): Model food legumes. Plant Soil, 252:55-128
• Díaz-Batalla, L., Widholm, J.M., Fahey, G.C. Jr., CastañoTostado, E. and Paredes-López, O. 2006. Chemical components with health implications in wild and cultivated Mexican Common bean seeds (Phaseolus vulgaris L.). J. Agril. Food Chem., 54:2045-2052
• Duke, J.A. 1981. Handbook of World Economic Importance. USDA, Beltsville, Maryland, Plenum Press, New York and London
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• Iezzoni, A.F. and Pritts, M.P. 1991. Applications of principal components analysis to horticultural research. Hort. Sci., 26:334-338
• International Board for Plant Genetic Resources (IBPGR). 1982. Phaseolus vulgaris descriptor list. Secretariat, Rome, Italy
• Kumar, V., Sharma, S., Sharma, A.K., Kumar, M., Sharma, S., Malik, S., Singh, K.P., Sanger, R.S. and Bhat, K.V. 2008. Genetic diversity in Indian Common bean (Phaseolus vulgaris L.) using random amplified polymorphic DNA markers. Physiol. Mol. Biol. Plants, 14:383-387
• Leguizamo´n, J. and Badenes, M.L. 2003. Multivariate analysis as a tool for germplasm studies: example of analysis of loquat germplasm data. Acta Hort., 606:29-35
• Mars, M. and Marrakchi, M. 1999. Diversity of pomegranate (Punica granatum L.) germplasm in Tunisia. Genet. Resour. Crop Evol., 46:461-467
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• Okii, D., Tukamuhabwa, P., Odong, T., Namayanja, A., Mukabaranga, J., Paparu, P. and Gepts, P. 2014. Morphological diversity of tropical Common bean germplasm. Afr. Crop Sci. J., 22:59-67
• Pe´rez-Gonza´lez, S. 1992. Associations among morphological and phenological characters representing apricot germplasm in Central Mexico. J. Amer. Soc. Hortl. Sci., 117:486-490
• Singh, S.P. 1982. A key for identification of different growth habits of frijol, Phaseolus vulgaris L. Annual Report, Bean Improvement Cooperative, U.S.A., 25:92-95
• Singh, S.P., Gepts, P. and Debouck, D.G. 1991a. Races of Common bean (Phaseolus vulgaris, Fabaceae). Econ. Bot., 45:379-396
• Singh, S.P., Gutierrez, J., Molina, A., Urrea, C. and Gepts, P. 1991b. Genetic diversity in cultivated Common bean. II. Marker-based analysis of morphological and agronomic traits. Crop Sci., 31:23-29
• Stoilova, T., Pereira, G. and Tavares-De-sousa, M. 2013. Morphological characterization of a small Common bean (Phaseolus vulgaris L.) collection under different environments. J. Centr. Europ. Agr., 14:1-11

• Review of Design Provisions for Masonry Structures

Abstract Views :113  |  PDF Views:86

Authors

S. B. Singh ¹, Nikesh Thammishetti ¹

Affiliations
1 Civil Engineering Department, BITS, Pilani-333031, Rajasthan, IN

Source

International Journal of Earth Sciences and Engineering, Vol 9, No 4 (2016), Pagination: 1540-1547

Abstract

Although masonry has been used even in most complex system of constructions with the development of design methods as well as analytical tools to address the needs of designers and professionals, the knowledge about the behavior of masonry and design guidelines to most of the designers is very limited. Different design guidelines developed are based on significant experimental initiatives or instinctive and empirical causes in most cases. This paper presents the current trends with regard to masonry design guidelines provided by various country codes to exercise improvement in the design of masonry structures. It even compares various provisions related to properties of materials to be used and serviceability limits in design of masonry structures.

Keywords

Masonry Design, Codal Provisions.

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• Occurrence, Severity and Association of Fungal Pathogen, Botrydiplodia theobromae with Sudden Death or Decline of Tree Bean (Parkia timoriana, (DC.) Merr) in North Eastern India

Abstract Views :314  |  PDF Views:113

Authors

A. Ratankumar Singh ¹, S. K. Dutta ¹, S. B. Singh ¹, T. Boopathi ¹, S. Lungmuana ¹, S. Saha ¹, Vishambhar Dayal ¹, Romila Akoijam ², S. K. Sharma ², N. Hemanta Singh ²

Affiliations
1 ICAR Research Complex for NEH Region, Mizoram Centre, Kolasib 796 081, IN
2 ICAR Research Complex for NEH Region, Manipur Centre, Lamphelphat 795 004, IN

Source

Current Science, Vol 115, No 6 (2018), Pagination: 1133-1142

Abstract

Tree bean, Parkia timoriana is one of the most important perennial tree legume vegetable crops in north eastern region (NER) of India. Recently, sudden death or decline is emerging as a major constraint in the production of tree bean. The prevalence, intensity and etiology of this disease have not been extensively studied. The present work was aimed at studying the symptomology, severity and etiology of sudden death or decline of tree bean in the north eastern region of India. Typical symptoms of tree bean decline were initiated with wilting of half portion of the tree, excessive shedding of leaves, gradual drying up leading to death, and secondary infestation by insects on dead trees. The highest disease severity of 68.5% was observed in warmer regions like Kolasib, Mizoram. During survey, small bark borer was recorded in all districts and levels of infestation rate (holes/ft2 of log) reached maximum up to 25.49 in Hnanthial of Lunglei district. Young trees in the range 1–10 years with 57.32% (917 trees) of total trees (1600) infected were most susceptible to the disease compared to 12.58% (201 trees) infection in old trees in the range 21–30 years. The frequently associated pathogen with sudden death or decline of tree bean was identified as Botrydiplodia theobromae at the Indian Type Culture Collection, ICAR-IARI, New Delhi. It was the most aggressive species and proven to be pathogenic to tree bean following artificial inoculation.

Keywords

Botrydiplodia theobromae, North Eastern India, Parkia timoriana, Sudden Death or Decline Disease, Tree Bean.

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References

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