Studies on Phosphorous Dynamics in Soils

Abstract

Over two-thirds of the soils in the world suffer from phosphorus (P) shortages. Due to phosphorus being unavailable to all but a small portion of plants, agricultural productivity diminishes. Phosphorus-deficient soils have traditionally been fertilized in order to decrease the severity of the environmental impact. Improving agricultural management practices for sustainable crop output, including reduction in phosphorus loss in terms of runoff, is the emphasis of this study. Investigating chemical fractionation mechanisms to distinguish between occluded P, acid-extractable calcium-bonded P, and non-occluded P is necessary for increasing inorganic phosphorous (Pi) in mung bean (Vigna radiata) types and establishing net grazing systems. Phosphate (P) is known to be transferred between pools due to weathering, with the highest P retention rates found in clay-rich soils. Soil with a finer texture is better able to absorb and fix phosphorus, which means more nutrients and water can be made available to the plant when mungbean varieties are inoculated into it. More photosynthesis means more accumulated dry stuff. The P-treated variety of mungbean had the greatest yield index (13.28). Pods per plant (46.02), pods per crop (8.20), test weight (40.63 gm), pod weight (8.0 g), and seed weight (1.0 g) were all significantly increased when fertilization done with Diammonium phosphate (DAP). An increase in nodule count, leaf area index, plant height, grain yield, total chlorophyll content, and straw output of up to 40% was observed at higher P2O5 concentrations (2988 kilograms per hectare). Each plant developed the maximum number of nodules after receiving injections of Phosphate solubilizing bacteria (PSB) and Aspergillus awamori. Its plants were the biggest and most productive overall, and its leaves contained the highest concentrations of chlorophyll. In acidic piedmont soil, liming increased mungbean yields by adjusting other chemical properties and boosting pH. They contend that expanding India's production of pulses is essential for the country to eventually achieve food security. P nutrition needs to be incorporated into farmers' and extension workers' balanced nutrient management programs if they wish to see higher quality pulse yields and greater long-term profitability.