Comparative performance of different varieties of soybean (Glycine max L. Merrill) under poplar based agroforestry system
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Date
2004-07
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
An experiment was conducted during kharif season of 2003 at Agroforestry Research Centre of G.B. Pant University of Agriculture and Technology, Pantnagar to study the effect of growth conditions on productivity and quality of different varieties of soybean (Glycine max L. Merrill). The experiment was laid out in split plot design with two growth conditions (under poplar and sole soybean) as main plots and 12 verities of soybean (PK 262, PK 327, PK 416, PK 472, PK 1029, PK 564, PS 1024, PS 1042, PS 1092, PS 1241, Shilajeet and JS 335) as sub plots with three replications.
Germination count, root length, root dry weight, plant dry weight, chlorophyll content and leaf area index were found to be higher in open system (sole soybean) as compared to agroforestry system at all the growth stages. Whereas plant height, number of trifoliate leaves, number of root nodules and nodules dry weight was found to be higher under poplar plantation as compared to open system at all the growth stages. Variety PS 1241 showed maximum germination and plant dry weight (above ground portion) at harvest. Whereas, variety PS 1042 showed maximum plant height, number of trifoliate leaves, root length, number of root nodules and root dry weight nodules dry weight at all the growth stages. Variety PK 472 showed highest chlorophyll content and leaf area index. Significantly higher values of yield and yield attributes were recorded in open systems as compared to under poplar plantation. Higher values of yield attributes were obtained by variety PS 1241. Maximum grain yield was produced by variety PS 1241 and Variety PS 1092 yielded maximum biological and straw yield. Higher values of nitrogen content in grain and straw, protein content and oil content in grain were obtained under poplar plantation as compared to open. Protein content in grain was significant higher in PK 1029, oil content in grain was maximum in PK 472 and nitrogen content in grain and straw was obtained maximum in variety PK1029.
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