Rajiv Kumar , P. K. Gupta , Ajay Gulati

Abstract

In India, natural forests are being conserved primarily for the environmental benefits. Serious efforts are also being done to plant large number of trees outside forest under social forestry programs to increase the tree cover and fulfill demand of various forest produce required by the people and forest based industries. Agricultural fields are one of the potential areas, where large scale planting of trees can be taken up along with the agricultural crops. Agroforestry models adopted by the farmers in Haryana and Uttaranchal states of India are highly lucrative, therefore, attracting farmers in a big way. NPV for different models on six years rotation varies from Rs. 26,626 to Rs. 72,705 ha^-1 yr^-1 whereas Benefit-Cost ratio and Internal Rate of Return vary from 2.35 to 3.73 and 94% to 389% respectively. Agroforestry has not only uplifted socioeconomic status of the farmers but also contributed towards overall development of the region.

Full Text

     

Rajiv Kumar , P. K. Gupta , Ajay Gulati

Abstract

Agroforestry in India has been identified as a potential practice, which can contribute significantly in increasing tree cover; meeting people's requirement of fuel wood, fodder, timber and non timber forest products. It can also ensure supply of raw material to the forest based industries and creating large scale employment opportunities. The present article discusses as to how a well-planned and systematic approach in agroforestry extension can attract farmers to adopt agroforestry practices and initiate a diffusion process, under which the practice spreads by itself due to its inherent virtues. About nine years back agroforestry was in its infancy stage, when the systematic and intensive extension works were initiated in Yamunanagar District of Haryana State. Today, on an average 30% of the total income of a family comes from agroforestry. This additional income has brought radical changes in the social life of rural people. They enjoy better education and have access to basic and modern amenities. Farmers with big land holdings have been benefited most by the agroforestry extension work. There is a need to chalk out special programme for development of agroforestry on the lands of small and marginal farmers.

Full Text

     

P. L. Soni , Sanjay Naithani , P. K. Gupta , Amit Bhatt , Ritu Khullar

Abstract

Utilization of Lantana camara can be an effective method for managing the weed. It is of potential economic value as it contains appreciable quantity of cellulosic fibres, have excellent strength properties, but till date not been exploited commercially. Owing to the presence of fibres, L. camara has potential to be utilized for making value added products such as α- cellulose and its derivatives, hand made paper, wood composites (which are good substitute of solid wood depending upon the end use) and furniture. Preliminary studies conducted have shown that Lantana camara contains ∼66 % holocellulose and ∼27% lignin. The average fibre length is 912μ with fibre diameter ∼22μ. α-Cellulose was isolated from L. camara with product yield ∼40%, brightness ∼80% at ∼95% purity having negligible ash content. α-Cellulose isolated from L. camara was derivatized to prepare water soluble carboxymethyl cellulose (CMC) having DS of 1.22, viscosity 600 cps (1% solution) and 7500 cps (2% solution).

Full Text

     

K. K. Srivastava , P. K. Gupta , D. K. Mishra

Abstract

Effect of three isolates from Neem Seed Kernel Powder (NSKP) was studied on the seeds of Azadirachta indica A. Juss. (Neem) collected from both viz., summer (stored at ambient and low temperature) and winter fruiting seasons. Significant effect of various extracts was noticed even at 0.2 per cent concentration. However, methanol and water soluble extracts showed better results than MeOH-water extract against spermoplane fungi of Neem seed.

Full Text

     

K. K. Srivastava , P. K. Gupta , Y. C. Tripathi , R. Sarvate

Abstract

The present study envasis on the bioefficacy of Neem Seed Kernel Powder (NSKP), Karanj (Pongamia pinnata) Seed Kernel Powder (KSKP), Neem Leaf Powder (NLP) and Neem Seed Oil (NSO) against spermoplane mycoflora of Neem seeds. NSKP, KSKP and NLP were used dry and also in wet conditions. The seedS were pelleted for 5 minutes before plating. Results indicated that all the treatments were superior to the control. NSO was found to be the most effective of all the treatments. The bioefficacy of NSKP, KSKP and NLP was more effective when pelleted on wet seeds as compared to dry seeds. Neem seeds treated with NSO and NLP (on wet seeds) inhibited the growth of Aspergillus flavus, Penicillium sp. And Mucor sp. Completely.

Full Text

     

P. K. Gupta , V. V. Prabhu

Abstract

Method was optimised for quantitative determination of azadirachtin content in Neem Seed Kernel (NSK) using High Performance Liquid Chromatographic (HPLC) System. Neem fruits were collected from nine Agro-climatic zones of Rajasthan State and the samples were analysed for the azadirachtin content using this optimised method. The azadirachtin content varied from 0.194% to 0.670% by weight of neem seed kernel.

Full Text

     

G. N. Gupta , N. K. Limba , P. K. Gupta

Abstract

The field experiment conducted on Neem raised on various types of water harvesting structures in arid region is presented.

Full Text

     

P. K. Gupta , R. S. Pal , C. J. S. K. Emmanuel

Abstract

Studies on fruiting in neem in the 3 year old provenance trial raised at AFRI, Jodhpur, was carried out during June 1995. Analysis of recorded data indicate that 206 trees (25.52%) of plants exhibited fruiting in the third year with variations depending on different provenances; 30 plants (3.72%) exhihited flowering at the time when the other trees were fruiting. In 2 plants (0.25%), flowering and matured fruits were observed occurring at the same time. One plus tree with respect to the extent of fruiting was identified from the Kanpur provenances, Tree No. 46.

Full Text

     

P. K. Gupta

Abstract

The paper deals with an enumeration of the grass flora of Gorakhpur, A total number of 76 spceis and 45 genera belonging to the 3 tribes of Panicoideae and 11 tribes of Posideae are described. Of these 14 tribes, the tribe Andropogonear, Eragosteae and Paniceae dominate, having 28, 15 and 23 species respectively. Echinochloa frumentacea Link, Eragrostis paeoides P. Beauv., Eragastis termula Hochst., Setaria viridis (Linn.) P. Beauv., and Bothriachloa ischaemum (Linn.) Keng described in this paper are not listed by Raizada (1954) in his list of grasses of the Upper Gangetic Plain.

Full Text