Effect of Inoculation of Phosphate Solublizing Rhizobacteria (PSRB) with Various Phosphorus Sources in Rhizosphere of Black Gram (Vignamungo)
Loading...
Date
2023-11-03
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Sher-e-Kashmir University of Agricultural Sciences & Technology of Jammu
Abstract
With the growing recognition of the environmental impact caused by chemical phosphate fertilizers, scientific focus has shifted towards sustainable alternatives like harnessing phosphate solubilizing bacteria (PSB). These beneficial microorganisms have the capability to convert both organic and inorganic insoluble phosphorus compounds into a soluble form of phosphorus, which can be readily taken up by plants. The inherent reactivity of phosphorus often hinders its availability to plants. Therefore, the introduction of PSB through inoculation holds the potential to enhance the efficiency of phosphorus utilization in agricultural landscapes. Despite being a subject of research for numerous decades, effectively manipulating PSB to unlock the increasing reserves of bound phosphorus in soil and to augment crop production on a field scale has not yet undergone comprehensive commercialization.Thepresent study “Effect of Inoculation of Phosphate solubilizingrhizobacteria(PSRB) with various Phosphorus sources in Rhizosphere of Black gram(Vignamungo)” was carried out in pot trialat Division of Soil Science and Agricultural Chemistry of Sher-e-Kashmir University of Agricultural Sciences and Technology Jammu arranged in factorial CRD with three replications. The treatments consisted of two factorsPhosphorus sources and PSB consortia which comprised of 21 treatment combinations. The various phosphorus sources included P0 (Control), P1(Bone meal), P2(Rock phosphate), P3(KH2PO4), P4(Tri calcium phosphate), P5(Di ammonium phosphate), P6(Mono calcium phosphate) and PSB consortia were as follows B0(control), B1(consortium-1), B2(consortium-2). Seed priming and soilinoculation was done with a combination of phosphorus source and PSB consortia prior to sowing at root zone of seedlings. Black gram seed (PU31)were sown during kharif season of 2022-2023. Application of P sources along with consortium treatment significantly increased available nutrients in rhizosphere of black gram. Non-significant decrease in pH was recorded in all stages of crop growth. Highest available N (90.54 mg kg-1) at flowering stage, (96.63 mg kg-1) at pod formation stage, available P (17.45 mg kg-1) at flowering stage, (18.89 mg kg-1) at pod formation stage stage, available K (95.05 mg kg-1) at flowering stage, (96.86 mg kg-1) at pod formation stage were recorded with treatment P5& Consortium 1 . Highest SMBC (97.54 ug soil-1) at flowering stage and (103.52 µgsoil-1) at pod formation stage and highest dehydrogenase activity (49.27 µg-TPFg-1soil hr-1) at flowering stage, (52.38 µg-TPFg-1soil hr-1) at pod formation stage were recorded with treatment P5 and B1. Maximum grain yield with (27.53 g pot-1) and N uptake (1.03 g pot-1), P uptake (0.18 g pot-1), K uptake (0.73 g pot-1) was recorded with treatment P5in black gram. Among consortium-1 and consortium-2, consortium-1 performed better with phosphorus sources. The use of consortia along with phosphorus sources improved physico-chemical and biological properties of soil as well as morpho-economic traits and quality in terms of phytic acid in black gram.
Description
Keywords
Citation
Anuragini.2023.Effect of Inoculation of Phosphate SolublizingRhizobacteria (PSRB) with Various Phosphorus Sources in Rhizosphere of Black Gram (Vignamungo)M.Sc.Thesis, Sher-e-Kashmir University of Agricultural Sciences and Technology, Jammu.