Effegt of Rhizobium, Phosphobacteria and P-levels On Growth, Yield and Acquisition of Nutrients by Urdbean (Vigna Mungo L.)

Abstract

An experiment was conducted at Crop Research Centre (CRC), Chirori of Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut during kharif-2011. Thirteen different treatments were replicated thrice in a randomized block design. The soil of experimental site was sandy loam in texture, low in organic carbon and medium in available phosphorus with alkaline in reaction. Treatments comprises T1: control, T2: Phosphate Solubilizing Bacteria (PSB), T3: Rhizobium, T4: PSB +Rhizobium, T5: 25 kg ha·1 P20 5 + PSB, T6: 25 kg ha·1 P20s + Rhizobium, T7: 25 kg ha·1 P20 5 + PSB + Rhizobium, T8 : 50 kg ha·1 P20s + PSB, Te: 50 kg ha·1 P20s + Rhizobium, T1o: 50 kg ha·1 P20s + PSB +Rhizobium, T11: 75 kg ha·1 P20s + PSB, T12: 75 kg ha·1 P20s + Rhizobium and T13: 75 kg ha·1 P20s + PSB + Rhizobium. Significantly higher grain yield, effective nodules and N & P contents in plant sample were obtained with the application of 75 kg ha·1 P20s + PSB +Rhizobium (T13) as compared to all other treatments T12 and T10. The highest grain (9.28qha.1) and straw (31.60qha.1) yield were obtain under T13, where as the control treatments registered the 6.31 and 21.48 qha·1 grain and straw yield respectively. The treatments also registered the highest N & P contents in soil after harvest of the crop followed by T12· From the above study it also seems that application of 50 kg ha·1 P20 5 with PSB and Rhizobium (T1o) also improved the grain yield and NP content in soil after harvest in comparison to control.