Performance of organically grown mungbean under rainfed condition in vertisol

A field experiment was conducted during Kharif 2007–08 to 2009–10 at Pulses Research Unit, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola to study the effect of different manures along with biofertilizers on growth, yield and yield attributes, uptake and soil fertility status. Application of recommended dose of fertilizer i.e. 20:40 kg N:P/ha recorded significantly higher grain yield over different organic sources. Among the manure treatments application of FYM @ 5 t/ha followed by vermicompost (VC) @ 1 and 2 t/ha recorded comparable grain yield, however, significantly higher over FYM @ 2.5 t/ha. Among the seed inoculation, consortium of Rhzobium + PSB registered significantly higher grain yield over their individual inoculation and control. Partitioning of above ground plant parts at maturity revealed that dry matter accumulation in different plant parts varied significantly due to manures and biofertilizer application. Uptake of nutrients was significantly higher with RDF and among organic manures VC @ 2 t/ha and FYM @ 5 t/ha recorded higher nutrient uptake over their respective lower levels. Significant build up in available nitrogen, phosphorus and potassium content in the soil due to application of RDF and higher levels of FYM (F₂) and VC (F₄) was observed over lower levels of manures. Population of diversified microbes was greatly influenced due to addition of different organic manures in comparison to inorganic fertilizer alone. However, application of FYM @ 2.5 t/ha recorded higher B:C ratio (5.03). Seed inoculation with Rhizobium + PSB recorded significantly highest net monetary returns (Rs.33815/ha) and maximum B:C ratio (4.31) over no inoculation.