SOIL MICROBIAL POPULATION AS INFLUENCED BY DIFFERENT NUTRIENT SOURCES UNDER DESI COTTONV.V. Patil, A.V. Solanke, S. S. Potdar, S.P. Wagh and P.N. RakhondeAbstract A field investigation on âNutrient management for organic cotton (Gossypium arboreum L.) productionâ was carried out at All India Coordinated Research Project, Cotton Improvement Project, Research Farm, Mahatma Phule Krishi Vidyapeeth, Rahuri, Dist. Ahmednagar, Maharashtra (India) during kharif season of 2017 and 2018. The experiment was carried on the same site and same randomization of treatments during both the years. After these two cycles, the soil microbial properties were significantly influenced due to various combinations of organic nutrient sources treatments. Significantly higher population of bacteria, fungi and actinomycetes was recorded at flowering stage and after harvest due to application of nutrients through FYM based on P equivalent than the rest of the organic nutrient sources treatments at all the stages of observations during both years. Whereas, it was at par with T9-[(T4- seed treatment with (Azotobactor + PSB) + soil application of Azotobactor + PSB) and foliar application of PPFM (1% spray at 45 and 65 DAS) + neemcake 250 kg ha-1 + raising of sunnhemp between two rows (1:1) incorporation in soil at flowering stage)]. The highest bacteria, fungi and actinomycetes population was observed at flowering stage than initial and at harvest during both the years of experimentation. |