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S. S. Inamati , K. V. Devar , A. Krishna

Abstract

A field experiment was conducted in Devimane, Western Ghats (Karnataka) to find out the floristic composition. This paper deals with floristic composition of the study area, which composed of 43 families represented by 130 species across all four altitudinal zone. The community coefficient among four altitudinal zones exhibited close relationship with more than 57 per cent of common species. high altitudinal zone was recorded highest species richness (10.53), Shannon index (3.61) and evenness index (0.86) as compared to rest of the altitudinal zones whereas study area recorded contiguous distribution, which is the commonest pattern in nature.

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N. Jayaramappa ¹, A. Krishna ¹, B. P. Annpurna ¹, T. Kiran ¹

Affiliations
1 Faculty of Engineering-Civil, UVCE, JBC, Bangalore University, Bangalore-560056, IN

Abstract

The main objective of this paper is to predict the base shear for a three dimensional four storey single bay RC frame, subjected to lateral load, using Artificial Neural Network. Analytical Pushover analysis is carried out using ETAB software. Pushover curve is plotted for Base shear versus roof displacement, to the prototype model tested at Central Power Research Institute (CPRI) Bangalore. The analytical results obtained from ETAB analysis are compared with the results predicted from Artificial Neural Network (ANN). Displacement and plastic hinges are selected as input vectors to ANN. Back propagation algorithm has been used for training. A learning rate constant of 0.85, error tolerance 0.001, and 5500 cycles are used for training ANN. Delta rule is used for adjusting the weights. It is found that a four-layer network (5-6-6-1) which consists of 5 input neurons, two hidden layers of 6 neurons each and one output neuron efficiently converges almost close to analytical results with an error range of 0.17% to 8.25%.

Keywords

ANN, Back Propagation, Base Shear, Delta Rule, Pushover

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A. Krishna ¹

Affiliations
1 Skin and Cosmetology Clinic, The Dermatotherapy Centre, Skin & Cryogenics Foundation, 1 Balliah Avenue, Luz Church Road, Mylapore, Madras, IN

Abstract

No Abstract.

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K. J. Meenakumari ¹, R. Sridaran ², A. Krishna ¹

Affiliations
1 Department of Zoology, Banaras Hindu University, Varanasi-221005, IN
2 Morehouse School of Medicine, Department of Physiology, 720 Westview Drive, S. W., Atlanta, GA 30310-1495, US

Abstract

The present study was designed to examine the changes in bradykinin in the ovary during different stages of reproductive cycle in short-nosed fruit bat, Cynopterus sphinx. The site and intensity of bradykinin immunoreactivity showed variations in relation to the ovarian cycle and pregnancy. During ovarian recrudescence the bradykinin was mainy localized in the granulosa cells of both preantral and antral follicles.

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A. Krishna ¹, M. A. Aariff Khan ², B. Joseph ³

Affiliations
1 Department of Agronomy, AICRP on Agroforestry, Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad, (Telangana), IN
2 Department of Soil Science, AICRP on Agroforestry, Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad, (Telangana), IN
3 Department of Agronomy, College of Agriculture, Palem, Nagarkurnool (Telangana), IN

Abstract

Different agroforestry trials conducted in Agroforestry Research blocks, Professor Jayashankar Telangana State Agricultural University, Hyderabad has showed higher economic gain in marginal lands. Sunflower grown when inter cropped in Hardwickia binata after stylo recorded higher seed yield (342 kg ha^-1) than grown after fallow in Hardwickia binata (248 kg ha^-1). The net returns from tree and crop were considerably higher when sunflower grown as inter crop in Hardwickia binata Rs. 6593 ha^-1. The Faidherbia albida (13 years age old) trial revealed that seed yield of maize+soybean when grown as inter crop was higher (2.94 t ha^-1) when compared to sole cropped maize without trees (1.7 t ha^-1). Due to shade effect of tamarind, after 8 years the same system was converted to horti-horti system for better land utilization by planting economic demand plants such as henna. The higher fresh biomass production of henna (640 kg ha^-1) recorded in double row planting when compared to single row. The soil productivity and fertility was improved in degraded marginal lands by different agroforestry practices. Pertaining to soil improvement over initial in different agroforestry practices the influence of different land use systems on soil properties and nutrient status revealed that bulk density reduced in surface and sub-surface soil in all tree based systems as compared to fallow (1.65 and 1.68 mg m^-3) and agricultural lands. The water holding capacity and infiltration rate was maximum in agri-horti system 30.0 and 30.0 per cent at 0-15 and 15-30 cm depth, respectively. Nutrient status and organic carbon was more in soils with tree plantation. Soil enrichment found in marginal lands in different agroforestry practices such as Melia azedarach based agri-silvi system, the conjoint use of 75% RDN+25% N poultry manure showed significant effect on OC (0.59%) and available NPK (150.0, 24.95, 210.0 kg ha^-1) followed by 100% RDF (0.55% and 147.0,24.00,216.0 kg ha^-1). In case of Melia dubia based silvi-pasture system, the OC and available N and P significantly affected by type of fodders and nutrient management over farmers practice i.e. FYM 10 t ha^-1. But there is no significant effect by interactions. The highest OC content recorded in fodder maize (0.52%) than sorghum (0.46%). In case of available N and P the significant effect found with fodder sorghum (152.0 and 51.00 kg ha^-1) than maize (109 and 22.42 kg ha^-1).

Keywords

Agroforestry Practices, Soil Improvement, Tree Crop Relation.

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P. Chandana ¹, A. Madhavi Lata ¹, M. A. Aariff Khan ², A. Krishna ³

Affiliations
1 Department of Agronomy, College of Agriculture, Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad 500 030,, IN
2 Krishi Vigyan Kendra, Kampasagar, Nalgonda district 508 278, IN
3 AICRP on Agroforestry, Rajendranagar, Hyderabad 500 030, IN

Abstract

A field experiment was carried out to estimate biomass production, carbon stock and economic performance of Melia dubia under agri-silviculture system. The grain yields of pearl millet were significantly lower under M. dubia plantations (852–2920 kg ha^–1) compared to sole crop without trees (3182 kg ha^–1). Maximum biomass production of 6-yr-old M. dubia planting was recorded as 74.9 t ha^–1 and minimum was 53.9 t ha^–1. Contribution of M. dubia to total carbon stock and carbon dioxide sequestration was observed in the range 27.0–37.5 and 98.9–137.5 t ha^–1 respectively. The net returns obtained from the tree were lowest ( 116,134–182,885 ha^–1) when compared to the tree + crop ( 139,953–209,650 ha^–1) system. The lowest net returns were observed in sole crop without trees ( 27,351 ha^–1). Thus, M. dubia plantations contributed towards higher carbon dioxide sequestration and economic performance of agri-silviculture system was higher compared to sole crop.

Keywords

Agroforestry, Biomass, Carbon Stock, Melia bubia.

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A. K. Handa ¹, Chhavi Sirohi ², A. Arunachalam ¹, S. S. Ramanan ¹, K. Rajarajan ¹, A. Krishna ³, R. H. Kolse ⁴

Affiliations
1 ICAR-Central Agroforestry Research Institute, Jhansi 284 003, IN
2 Department of Forestry, CCS Haryana Agricultural University, Hisar 125 004, IN
3 Professor Jayashankar Telangana State Agricultural University, Hyderabad 500 030, IN
4 Mahatma Phule Krishi Vidyapeeth, Rahuri 413 722, IN

Abstract

No Abstract.

Keywords

No keywords

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