Role of Bio-fertilizers in Availability of Phosphorus Fertilizer and Yield of Blackgram (Vigna mungo L.)

The present study aimed to determine the effect of Bio-fertilizers and level of Phosphorus on growth and yield of Blackgram (Vigna mungo L.). The field experiment was carried out during the Summer season 2023 at Shraddhey Bhagwati Singh Agriculture Farm, Hazipur, C.B.G. AG. PG. College, B.K.T., Lucknow, (U.P.). The experiment was laid out in FRBD with 12 treatment combination along with three replications. The result showed that the growth parameter viz. plant stand, plant height, number of branches, dry matter accumulation and leaf area index significantly increased due to application of T12 (Rhizobium seed treatment @ 20g/kg seed+ PSB soil application @5kg/ha+60kg P2O5) .Yield attributes viz. number of pods/plant, number of grains/pod, weight of pods/plant ,weight of seeds/plant (and 1000 grain weight ,grain and straw yield ,total biological yield and harvest index, quality and economics of Black gram was significantly increased by the T12 (Rhizobium seed treatment @ 20g/kg seed+ PSB soil application @5kg/ha+60kg P2O5) .However the highest B:C Ratio was resulted due to the application of(Rhizobium seed treatment @ 20g/ka seed+ PSB soil application+40kg P2O5).Rhizobium, and PSB along with phosphorus level was the superior among others treatments.