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Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Prasad, K. G.
- Bamboo Scenario of Jorhat District of Assam
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Indian Forester, Vol 133, No 7 (2007), Pagination: 927-936Abstract
A massive survey of demand and supply of bamboo in Jorhat District of Assam was conducted. The whole district was divided into 6 developmental blocks. Stratified sampling technique was used in the study. There are only three bamboo species viz. Jati (Bambusa tulda), Bhaluka (Bambusa balcooa), and Mokal (Bambusa nutans) being exploited in the district. Percentage-wise consumption of Jati, Bholuka and Mokal is 53, 40 and 7% respectively. Maximum bamboo is consumed in construction of houses followed by construction of fence, repair of house, firewood, etc. Total supply and consumption of bamboo is found to be 5,36,337 and 4,42,886 tonnes per year. About 17 % i.e. 9,351 tonnes of bamboo is surplus in the district. The excess amount is sold in local market or to paper mills. Demand of bamboo for local goods, plywood, incense stick and paper pulp is increasing. There is ample scope to increase the productivity through genetic improvement and management practices.
- Status and Strategies for Teak Improvement in North-East India
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Indian Forester, Vol 129, No 9 (2003), Pagination: 1132-1140Abstract
Availability of first-hand basic information on Teak plantations, particularly in the NorthEast region of India, is rare. A study on variation in Teak plantations in this region has been documented and probable strategies identified for the improvement of Teak.- Strategies for Testing, Registering and Releasing Genetically Improved forestry Planting Stock
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Indian Forester, Vol 128, No 6 (2002), Pagination: 619-634Abstract
Many forest research organisations have developed high yielding genotypes with concerted research efforts both in the laboratory and field. However, these genotypes have not been tested in field or field oriented conditions. Various tools have been suggested for testing, registering and releasing of genetically improved planting stock in the present article. There should be clone and progeny releasing committees viz. Regional Clone and Progeny Releasing Committee (RCPRC) and National Clone and Progeny Releasing Committee (NCPRC). The RCPRC would have a chairman and five members, whereas NCPRC would have a chairperson and a minimum of eight members. The RCPRC would be headed by a chairperson and will have a minimum of two breeders/geneticists of the regional Institute. Other members would be the nominees of the State Forest Departments, Forest Development Corporations and wood based industries working on tree improvement. The chairperson, NCPRC would be appointed by the DDG (Research), ICFRE, and chairpersons ofRCPRCs would be the members ofNCPRC. Once the superiority of the planting stock is tested, elite entries would be registered and released by the registration committee for commercial multiplication.- Selection of Suitable Provenances of Acacia nilotica for Sodic Soil
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Indian Forester, Vol 126, No 11 (2000), Pagination: 1175-1178Abstract
A provenance trial of Acacia nilotica was conducted in sodic soils of Sultanpur District in Uttar Pradesh. Out of the ten provenances under test, the Sholapur (Maharashtra) was found to be most suitable provenance followed by Dhaund (Maharashtra) for the sodic site. Haldwani (Uttar Pradesh) provenance proved to be most interior for this site.- Suitable Season of Planting Tree Species in Sodic Soils of Haryana
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Indian Forester, Vol 121, No 8 (1995), Pagination: 735-742Abstract
The article deals with the findings of a field experiment conducted in sodic soil (Natrustalf) of Kurukshetra Forest Division, Haryana, with the objective to determine the most suitable season for planting tree species in such problem soils. The study brought out that pre-monsoon is the most favourable season followed by post-monsoon season for planting tree species in such problem soils. Planting during monsoon, a normal silvicultural practice, was not suitable for these soils. Among the species tried, Tamarix articulata was most promising, but E. tereticornis and C. citrinus also performed satisfactorily.- Effect of Nitrogen, Phosphorous and Mulch on Growth and Establishment of Pinus roxburghii
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Indian Forester, Vol 120, No 3 (1994), Pagination: 242-247Abstract
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.- Salt Affected Soils of Indo-Gangetic Plains
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Indian Forester, Vol 120, No 4 (1994), Pagination: 361-367Abstract
Some salt-affected soils of Indo-gangetic plains were characterised and classified in accordance with Soil Taxonomy Petrocalcic Natrustalf were of wider occurrence and identified in Kurukshetra Forest Division and Gurgaon Social forestry Division, Haryana and Patiala Forest Division, Punjab. However, Typic Natrustalf and Salorthidic Natrustalf also occur in Kurukshetra Forest Division. Aquic Petrocalcic Natrustalf were identified in Kanaksinghpur of Sultanpur District and Khara of Raebraeilly District, Uttar Pradesh. The soils of Rohtak Social Forestry Division, Haryana were classified as salorthidic Natrustalf and Typic Salorthidic on the basis of their characteristics.- Fertilizer Response of Eucalyptus tereticornis Seedlings
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Indian Forester, Vol 120, No 8 (1994), Pagination: 699-710Abstract
Four pot culture experiments were carried out to determine the response of N, P and K by Eucalyptus tereticornis varieties FRI-4 and FRI-5 grown on sandy loam New Forest Soils, Leaf number, average leaf area, total leaf area, fresh biomass and dry biomass of both the varieties responded to N application whereas variety FRI-4 responded to N+K application and variety FRI-5 to N+P application. These growth parameters were also highly correlated with the Fertilizer Use Efficiency (FUE) (mg dry biomass/mg N, P or K). Interestingly FUE of varieties FRI-4 and 5 were inherited from their mothers E. camaldulensis and E. tereticornis respectively. Further, these parameters were directly related to the relative chlorophyll content of leaves; a determination of light transmission through leaf at photographic infrared band; measured using "Agrophotometer".- Inter-relationship between Geology, Soil and Vegetation of Kanasar Range in Chakrata Division of Uttar Pradesh
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Indian Forester, Vol 120, No 12 (1994), Pagination: 1095-1103Abstract
A general relationship between geology, soil and vegetation in the Kanasar Range of Chakrata Forest Division, Uttar Pradesh was evaluated. Geologically the rocks of the study site are of Pre-Cambrian to early Paleozoic in age with recent and subrecent deposits. Soils belongs to Typic Paleudoll (Konain series), Typic Argiudoll (Deoban series), Typic Paleudult (Kanasar series) and Humic Hapludult (Budher series) and all these polypedons are members of fine loamy, mixed, messic family. Vegetation of the study area is a climatic climax and falls under 12/C-Himalayan moist temperate forests. The study revealed that basal area of Cedrus deodara increased with increasing calcite content and decreased with increasing dolomite content. The study further indicated that relief and age acting on geology of Kanasar Range govern the existing soil whereas effect of altitude and climate on geology gives rise to natural vegetation. Climate and aspect on a particular site have given rise to existing floristic composition and also different pedogenic processes active at the site.- Potential Water Requirement of Eucalyptus - A Preliminary Study
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Indian Forester, Vol 119, No 7 (1993), Pagination: 549-552Abstract
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%.- Fertilizer Use Efficiency of Different Tree Species for Higher Biomass Production
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Indian Forester, Vol 118, No 4 (1992), Pagination: 265-270Abstract
Greenhouse study was carried out to determine fertilizer use efficiency of trees species with regard to N, P and K nutrients. Eucalyptus cumaldulensis. E. citriodora and Acacia nilotica responded to the application of N, P and K whereas Acacia catechu. Eucalyptus, grandis E. tereticornis var FRI-5 and Prosopis juliflora responded to only N and P application and Albizia lebbeck. Leucaena leucocephala and E. tereticornis var FRI-4 responded to N and K only.- Development of Technology for Afforestation of Sodic Soils. I - Leguminous Species
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Indian Forester, Vol 118, No 8 (1992), Pagination: 547-559Abstract
In order to develop technology for afforesting highly sodic wasteland soils, field experiment consisting of four soil management treatments with and without drainage channel on five species was laid out on sodic (pH 9.7, conductivity 1.3 ds/m) Revar soils of Kurukshetra Forest Division in Haryana. The study brought out that best results could be obtained with treatment M2, which consists of mixing original soil with 3 kg gypsum, 2 kg rice-husk, 50g urea (in three split doses), 50g single super phosphate, 25g muriate of potash, O.2g zinc sulphate and 5g BIIC. Amongst the species tried, P.chilensis was most promising followed by T.articulata and A.nilotica. P. pinnata survived but growth rate was very slow. A.lebbek was not found to be the suitable species for highly sodic soils. The observations are continuing.- Mineralogical Studies of Sand Fractions of Chakrata Forest Division, Uttar Pradesh
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Indian Forester, Vol 118, No 11 (1992), Pagination: 839-845Abstract
Three soil profiles under Cedrus deodara, Pinus roxburghii and Picea smithiana were studied for sand mineralogy in the Chakrata Forest Division of Uttar Pradesh. Quartz is the most abundant light mineral in all the profiles followed by mica which is present in relatively higher amount in the lower depth. Heavy minerals occur in small quantities or in traces only. The presence of iron-minerals indicate the movement of water inside the depth or profiles which show podzolic nature. The soil under Cedrus deodara/I> is of lower ferlility as compared to others. Although a direct relationship of the vegetation with the sand mineralogy of soils is not apparent, the low levels of weatherable minerals is a favourable feature for supporting the vegetation in its present state.- Effectiveness of Different Nitrogen Sources on Leucaena leucocephala
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Indian Forester, Vol 117, No 3 (1991), Pagination: 207-212Abstract
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.- Response of N, P and K by Acacia nilotica Seedlings
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Indian Forester, Vol 117, No 7 (1991), Pagination: 560-567Abstract
Greenhouse experiments were carried out to see the response of N, P and K by A. nilotica seedlings grown on sandy loam New Forest soils. Treatments consisted of 0,50, 100, 150 and 200 ppm N (100 ppm P2,O5, and 50 ppm K O as basal dose); 0,50,100 and 150 ppm P2,O5, (100 ppm N and 50 ppm K2O as basal dose); 0, 25, 50 and 75 ppm K2O (100 ppm each of N and P2O5, as basal dose) and factorial combinations of 0 and 100 ppm N, 0 and 100 ppm P2O5, and 0 and 50 ppm K2O. A. nilotica seedlings responded to N applied alone or in combination with P and K. Application of P and K applied alone or in combination decreased the growth, yield and fertilizer use efficiency in Ihe absence of N. The best treatment of 100 ppm N, 100 ppm P2O5, and 25 ppm K2O was observed.- Fertilizer Response of Selected Social Forestry Species under Varying Soil Texture
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Indian Forester, Vol 116, No 1 (1990), Pagination: 49-57Abstract
Pot culture experiment using sand,loam and clay textured solis was conducted to see the effect of texture and nutrient application (50 ppm each of N, P and K) on Acacia lenticularis, Acacia pJanifrons, Albizia amara, Albizia lebbek, Azaduachta indica, Eucalyptus teretieornis, Hardwickia binata, Peltaphorum pterocarpum and Tamarindus indica. It was observed that A.lebbek, P.pterocarpum and E. tereticornis are highly responsive to clay texture and nutrient application. All species produced higher above and below ground biomass in clay soli except A. amara which produced higher biomass under sandy soil. A.lenticularis, A.amara, A.indica, H.binata and T.indica showed decrease in biomass due to nutrient application. Further studies are suggested.- Applicaton of Nutrients on Growth of Acacia catechu in Nursery Bed
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Indian Forester, Vol 116, No 8 (1990), Pagination: 655-662Abstract
Experiment was laid out to know the effect of N, P and Zn on germination, survival and growth of Acacia catechu seedlings in nursery. Basal dose of chemical fertilizers decreased seed germination and survival. It was observed that 10 ml solution per bag of O.2% each of urea and superphosphate applied 10th and 13th week and 10 ml per bag of O.02% zinc sulphate solution applied 15th week after seed sowing increased the height growth of seedlings. Using this method, plantable seedlings were ready within 16 to 18 weeks of sowing directly in the polythene bags, thus saving time, money land and labour.- Clay Minerals in the Soils of South Kheri Forests, Uttar Pradesh
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Indian Forester, Vol 115, No 8 (1989), Pagination: 555-559Abstract
X-ray diffraction of selected soil clay of South Kheri forests of Uttar Pradesh brings out kaolinite as the dominant silicate mineral, both at the surface as well as the subsurface of all the pedons. In addition, small amounts of goethite, gibbsite and integrated micaceous minerals are also identified in the clay fractions. An occurrence of some vermiculite only in the three pedons under natural sal (Shorea robusta), which decreased at the subsurface, may perhaps be a peculiar coincidence only as no tangible explanation exists.- Performance of Tropical Pine Under Different Silvoclimatic Zones of Tamil Nadu
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Indian Forester, Vol 115, No 9 (1989), Pagination: 619-625Abstract
Field trials of P. caribaea and P. oocarpa were undertaken from 1979 onwards under different Silvoclimatic zones in Tamil Nadu. Performance of P. caribaea and P. oocarpa are evaluated in relation to soil properties of each zone and comparative study is discussed in this paper, after analysing the data statistically.- Interference between Two Species in Mixed Seeding System
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Indian Forester, Vol 115, No 12 (1989), Pagination: 884-890Abstract
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.- Use of Mulches in Estblishment and Growth of Tree Species on Dry Lands
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Indian Forester, Vol 114, No 6 (1988), Pagination: 307-316Abstract
Field experiments at three locations, namely Bolampatti, Pethikuttai and Coimbatore (Coimbatore Forest Division, Tamil Nadu) having different rainfall pattern and soils were conducted in 1985-86. Coir pith mulch was used on heavier soils of Bolampatti and Coimbatore, while gravel mulch was used on medium soil of Pethikuttai. Height of A. planifrons (113%), A. nilotica (96%), P. pterocarpum (85%), A. indica (60%) and E. camaldulensis (57%) increased due to coir pith mulch treatment. Response to mulch treatment was not so marked in case of A. leucophloea (27%) and T. indica (13%). A. lebeek, E. cuminii and P. pinnata did not respond to treatment. At Pethikuttai, use of gravel mulch increased height of E. camaldulensis (53%), A. indica (59%) C. pentendra (47%), A. leucophloea (68%) and A. nilotica (96%), A. planifrons (51%), P. pterocarpum (91%) A. lebbeck (122%). Growth of E. cuminii, C. equisetifolia, P. pinnata and T. indica was not significant due to mulch. At Coimbalore, where additional water was also given during severe moisture stress, plant height of C. equisetifolia increased from 115 to 147 cm E. camaldulensis from 102 to 120 cm in 6 months after planting. T. indica did not respond to mulch application at this site. Use of coir pith mulch maintained significantly higher moisture regime at all the locations throughout the growth period. Coir pith mulch reduced the surface soil temperature by 3 to 5°C at Coimbatore.- Soil Vegetation Relationship Studies in some Selected Tree Species of Mudumalai Forest Division
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Indian Forester, Vol 114, No 7 (1988), Pagination: 390-398Abstract
Present paper envisages information on the influence of climate, soil and topographic factors for the growth and distribution of three important tree species namely Anogeissus latifolia, Terminalia tomentosa and Tectona grandis in Mudumalai Forest Division of Tamil Nadu. T. tomentosa was found suitable in regions having > 1525 mm of annual rainfall, whereas A. latifolia and T. grandis performed well in the relatively lesser rainfall areas as well. T. tomentosa prefers very deep soils (> 120 cm) whereas good growth and density of T. grandis and A. latifolia were recorded on moderately deep soils. Density and growth of T. grandis was higher on medium textured soils whereas the density of A. latifolia was not affected by coarse textured soils. Higher growth and density of T. tomentosa was associated with poor P2O5 K2O and Mg contents of the soil. A. latifolia and T. grandis were found on soil rich in Ca and Mg. Soils rich in organic carbon and CEC occurred under better growth and density of teak.- Effect of Nutrients on the Growth Behaviour of Bambusa tulda in the Nursery
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Indian Forester, Vol 114, No 9 (1988), Pagination: 584-591Abstract
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.- Root Behaviour in Bambusa tulda Roxb. A Priliminary Study
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Indian Forester, Vol 114, No 10 (1988), Pagination: 737-738Abstract
No abstract- Effects of Removal of Pine (Pinus roxburghii) Needles from the Chir Pine forest Floor-A Preliminary Report
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Indian Forester, Vol 114, No 11 (1988), Pagination: 761-769Abstract
Study was Initiated to evaluate the effects of removal of Chir pine needles from the forest floor of 57 years old Pinus roxburghii plantation at the Champion Block. F.R I, Dehra Dun. Data collected for the first year reveal that maximum (83%) needle fall did occur during pre-monsoon period followed by monsoon months (12%), dry months (4%) and post monsoon months (1%). The moisture content in the needles, recorded was 5.5% for pre-monsoon needle fall, 6.0% for monsoon fall, 27.3% for dry period and 39.9% for post monsoon fall. Approximately 10.79% metric ton/ha of needles were shed during the year. This litter fall contained about 113 kg/ha of N., 15 kg/ha of P, 35 kg/ha of K, 65 Kr/ha of Ca, 22 kg/ha of Mg and 338 kg of ash/ha. No significant change in soil properties has been noticed at present due to removal of needles. The observation in this regard is continuing.- Growth of Tropical Pines in Tamil Nadu in Relations to Soil Properties
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Indian Forester, Vol 113, No 1 (1987), Pagination: 53-60Abstract
Pinus caribaea provenance FRI-649 was grown at Kolli Hills and Perumalmalal during 1979 and at Mahendragiri and Gudalur during 1981. Pinus oocarpa provenance FRI-650 was raised at Perumalmalai and Koill Hill during 1979, and provenances FRI-760 and 761 were raised at Koill Hill, Perumalmalai and Gudalur during 1979. The study has revealed that site and soli factors play a major role in the suitability of tropIcal pine species and their provenances. Solis of sandy loam texture seem to be ideal for raising these provenances, while solis of heavier texture seem to retard the growth after tbe 3rd year. The provenances grew well under low fertility conditions and a moderately acidic soli environment.- Performance of Tropical Pines and their Provenances in Tamil Nadu
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Indian Forester, Vol 113, No 2 (1987), Pagination: 101-111Abstract
Trials with tropical pines were taken up by the Silvicultural Research Wing of the Tamil Nadu Forest Department from 1962 onwards. This paved the way for the introduction of Pinus patula. Sch.& Cham, on a plantation scale in the Nligiris in 1967 and in the Kodaikanal Hills from 1968. Species-cum-provenance trials of tropical pines were initiated during 1979 in Tamil Nadu by the Tropical Pine Research Centre,. Kodaikanal. Initial observations reveal that Pinus patula and Pinus pseudostrobus are ideal species for the higher altitudes. (above 2,000 m M S.L). P. oocarpa performed better at middle altitudes (between 1,000-1,500 m above M S L.). Among the Pinus patula provenances, F.R.I. No. 511 from Malawi and F.R.I. No. 619 from Tanzania are superior to the other provenances. Provenance F R.I. No. 516 from Nicaragua has shown better performanc, among P. pseudostrobus provenaces, followed by proveoance, F.R I No. 515, from Guatemala. Among P. oocarpa proveoaoces, F.R.I. No. 625 from La Campa. Honduras. F.R.I. No. 624 (LaCampa Honduras) and 468 (from Guatemala) were superior over others. Pinus caribaea provenances F. R.I. No. 649 from Poptum Guatemala were superior over others. Further observations are continuing.- Response of Two Year Old Pinus patula to N, P and K Fertilization
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Indian Forester, Vol 112, No 1 (1986), Pagination: 38-42Abstract
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.- Salt Tolerance in some Tree Species at Seedling Stage
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Indian Forester, Vol 112, No 2 (1986), Pagination: 101-113Abstract
In a pot culture study varying levels of salinity were Simulated in clay, loam and sand textured soils. Based on plant survival, height, leaf weight, stem weight total plant weight, ischolar_main length and ischolar_main/shoot ratio, it was concluded that Acacia nilotica and Eucalyptus camaldulensis could be grown with less than 50% growth reduction upto 5 ds/m salinity. Acacia nilotica withstood salinity of as high as 15 dS/m. Casuarina equisetifolia was moderate in salt tolerance. Ceiba pentandra and Acacia auriculaeformes were highly sensitive tree species and did not survive beyond 2.5 ds/m.- Forest Soil Cum Vegetation Survey and Classification with Special Reference to South India. II: Sampling Intensity
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Indian Forester, Vol 112, No 5 (1986), Pagination: 417-425Abstract
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.- Edaphic Requirements of Tropical Pines with Special Reference to Tamil Nadu
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Indian Forester, Vol 112, No 9 (1986), Pagination: 801-807Abstract
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.- Distribution of Teak under Different Silvo-climatic Conditions in some Parts of Western Ghats
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Indian Forester, Vol 112, No 11 (1986), Pagination: 1108-1015Abstract
Present work was an attempt to study the influence of climatic, physiographic and edaphic factors on the growth and distrihution of Teak (Tectono grandis) in the eastern slope of western ghats. Based on soil analytical and teak density data obtained during the survey of Mudumalai Wildlife sanctuary and Coimbatore Forest Division in Tamil Nadu it was observed that, in general, teak prefers moderately deep, well drained. Medium textured soil, moderate temperature and gentle slopes. The data also suggest that high to very high teak density sites have relatively higher organic carbon; exchangeable calcium and cation exchangeable capacity.- Managing the Eroded Slopy Lands for Higher Biomass Production of Eucalyptus grandis
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Indian Forester, Vol 112, No 4 (1986), Pagination: 288-295Abstract
An initial survey of the soils under Eucalyplus grandis plantation at Minmutti, in Nagarampara range of Kottayam forest Division revealed that the stunted growth and mortality of the Eucalyptus grandia was due to deficiency of N,P. and Ca, on severely eroded soils. Having skeletal compacted soil profile. Studies involving four levels each of N (0, 30, 60 and 90 kg/ha), and P205 (0, 1 0, 20 and 30 kg/ha) as urea and superphosphate, respectively in factorial combinations revealed that both, nitrogen and phosphorus.. Enhanced biomass production and stem volume significantly during two year growth period. Influence of nitrogen was of prime significance. The P and N x P interaction was also significant. Additional Index Nitrogen, Pholphorus, Eucalyptus grandis, Eroded lands.- Methods of Fertilizer Application in Pinus patula
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Indian Forester, Vol 111, No 9 (1985), Pagination: 693-697Abstract
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 (To) 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.- Studies on Changes in Soil Properties under Different Vegetations
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Indian Forester, Vol 111, No 10 (1985), Pagination: 794-801Abstract
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.- Fertilization in Eucalyptus grand1s on Severely Truncated Soil. I: Growth Studies
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Indian Forester, Vol 110, No 2 (1984), Pagination: 132-141Abstract
A factorial experiment with four levels (0.25, 50 and 75 g/plant) eacb of Urea and Superphosphate was carried out witb E. grandis grown on a severely truncated (Lithic Dystropept) soils at Minmutti, Idukki District, Kerala. Height, collar circumference, crown diameter and volume of E. grandis plants Increased with the application of N ferlilizer alone or in combination with P. However, P application alone was inferior to control treatment. Considering tbe growth parameters, relative treatment elfecllveness (RTE) and relative economic effecliveness (REE), treatment N75 P75 was the best followed by N75 P50 and N50 P75 treatments.- Fertilization in Eucalyptus grandis on Severely Truncated Soil. II: Biomass Producnon
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Indian Forester, Vol 110, No 2 (1984), Pagination: 142-149Abstract
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.- Fertilisation in Eucalyptus grandis on Severely Truncated Soil. III: Nutrient Uptake
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Indian Forester, Vol 110, No 10 (1984), Pagination: 1033-1048Abstract
Nutrient content and uptake by different components (ischolar_main stem, twig and leaf) of one year old Eucalyptus grandis as affected by urea and superphosphate application at Minmutti, Kerala was estimated. In general, N, and K concentration decreased due to N and P fertiliser application either alone or in combination. However, uptake of N, P and K increased with each dose of application of N and P fertilisers and generally uptake values were maximum in N75 P75 treatments. Percent recovery of N was greater (79.1%) in N75 P75 treatment and P recovery (18.8%) In N75 P75 treatment.- A Survey Note on the Regeneration of Rosewood (Dalbergia latifolia Roxb.) in Gudalure Wynaad Forest Tract (Nilgiris)
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Indian Forester, Vol 105, No 10 (1979), Pagination: 727-732Abstract
Quadrat study was carried out on regeneration of rosewood (Dalbergia latifolia Roxb.), in the Janmam Forests of Gudalure Forest Division of Coimbatore Circle, Tamil Nadu. This is a mountainous forest tract consisting of moist deciduous, grass-phoenix, and semi-evergreen types of vegetation. More frequency, abundance and density of rosewood ischolar_main suckers were observed in Phoenix- Careya- Dalbergia association (0.67, 8.75,and 5.83 respectively) followed by Olea- Mallotus- Lantena association (0.36, 3.00 and 1.09 respectively), and Cinnamomum- Zizyphus- Dalbergia association (0.40, 2.00 and 0.80 respectively). Suggestions have been made to preserve and protect these young plants of rosewood which have come up naturally and to propagate ischolar_main suckers artificially which will improve the rosewood population in the tract.Full Text