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1 Variation in resource requirements among plant species may cause changes in community composition when resource supply rates vary. Because exotic plants may differ in their requirements compared with native plants, changes in resource levels or ratios may change their invasive potential. The concentration hypothesis, nutrient balance hypothesis and resource ratio hypothesis make different pre...

A field experiment was conducted during the kharif season of 2014 at Crop Research Farm, Department Agronomy, SHIATS, Allahabad, UP to evaluate influence different sources phosphorus on productivity and profitability Greengram. The in randomized block design with 9 treatments viz. Control (No Phosphorus, 100% P through SSP, URP, 50% SSP + 75% 25% PSB inoculation, URP inoculation. greengram vari...

Ruminant phosphorus excretion and metabolism were studied through a database. Faecal endogenous phosphorus is the main pathway of phosphorus excretion and averages 0.85 of total faecal phosphorus. The remaining 0.15 is unabsorbed dietary phosphorus. Faecal endogenous phosphorus is mainly unabsorbed phosphorus, with saliva being the major source, and is correlated to factors influencing saliva s...