ANURADHA et. al. 3. The over all regression was found to be significant at 1% level. The Multiple co-efficient of correlation was found highly significant at all the days of observation. R value at 30, 45 and 60 DAS explained the variation to an extent of 75, 67 and 41% respectively. At 30 DAS two nutrients i.e Bio-Potash and Bio-ZincG showed significant correlation. At 45 DAS two other nutrients N and Bio-PhosG affected the seed yield. At 60 DAS Zinc alone influenced the seed yield. The favourable effect of use of organic products can be explained by the presence of aminoacids, amino nitrogen (chelated proteins) in Bio- PhosG, glucose in Bio-PotashG which makes the input readily available to roots and bioavailable to plants, besides improvement in the soil microflora due to their intrinsic organic properties. Farm productivity improved substantially because of zinc application as Bio-ZincG contained 50-52% organic zinc with 6-7% bioavailable zinc. High yields in green gram were obtained with the use of organic sources vermicompost also reported in greengram by Rajkhowa et al., (2003) and in blackgram by Vasanthi and Subramanian (2004). REFERENCES CMIE. 2009. Centre for monitoring of Indian economy. Gomez, A., Kwanchai. Gomez, A and Arturo. (1984). Regression and correlation analysis. Statistical procedures for agricultural research. 2 nd Ed. John Wiley and Sons, New York, USA. pp. 357- 423. Dilly, O. 2004. Effects of glucose, cellulose, and humic acids on soil microbial eco-physiology. Journal of plant nutrition and soil science. 167 (3) : 261-266. Dikshit, P. R and Khatik, S. K. 2002. Influence of organic manures in combination with chemical fertilizers on production, quality and economic feasibility of soybean in typic haplustert of Jabalpur. Legume Research. 25 (1) : 53-56. Poornesh, A. S., Reddy, V. C and Murthy, K. N. K. 2004. Effect of urban garbage compost and Sewage sludge on yield of ragi. Environment and Ecology. 22 (3) : 720-723 . Prasad Rao, A and Bhupal Raj G. 2001. Guidelines for soil based technologies to optimise land productivity in Andhra Pradesh. ANGRAU. PP 97. Rajkhowa, D. J., Saikia, M and Rajkhowa, K. M. 2003. Effect of vermicompost and levels of fertilizer on greengram. Legume Research. 26 (1) : 63- 65. Rutherford, P. M and Juma, N, G. 1992. Effect of glucose amendment on microbial biomass, fertilizer 15N-recovery and distribution in a barley-soil-system. Biological fertilizers and soils. 12 : 228-232. Vasanthi, D and Subrhamanian, S. 2004. Effect of vermicompost on nutrient uptake and protein content in blackgram. Legume Research. 27 (4) : 293-295. Walkley, A and Black, I. A. 1934. An examination of Degtjareff method for determining organic carbon in soils: effect of variations in digestion conditions and of inorganic soil constituents. Soil Science. 63, 251–263. WWW. Prathista.com : https//www. Prathista.com 66
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