Download or read book Organic and Inogarcnic Nitrogen Fertilizer Sources on Soybean Growth Seed Yield Germinability and Storability written by K. Pisithkul and published by . This book was released on 1994 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern seed production is highly chemical based. Alternatives are currently being sought. The study was conducted to compare the performance of soybean varieties in terms of growth and seed production using inorganic and organic N sources during the wet season at the UPLB experiment station. Two soybean varieties (PSB-Sy2 and BPI-Sy4) were fertilized with organic N (carabao manure and gliricidia leaves) at N level of 24 kg ha1 and inorganic N (24-30-30- kg ha1 N, P2O5 and K2O) sources. A control (without N fertilizer) was included and all treatments were inoculated with Rhizobium. No pesticide was applied but infestation was controlled by manual picking of larvae. The study was conducted in a split plot design with varieties as main-plot and N souces as sub-plot with three replications. Parameters such as plant height, leaf area index (LAI), crop growth rate (CGR), above-ground and root biomass, number of nodules and plant moisture content (MC) were studied. Biomass produced, N concentration and N content in plant parts, total plant N content, partitioning of biomass and N in terms of harvest index (HI) and N harvest index (NHI), N use efficiency in terms of conversion to biomass (NUEb, g biomass g1 plant N) and grain (NUEg g grain dry weight g1 plant N), grain N utilization efficiency (NUEgn, g grain dry weight g1) grain N), seed yield and seed quality (germinability and storability) were comprared. Number of pests and beneficial insects, scale leaf damage and soil N status were also examined. Both ...