Phosphate-Solubilizing Bacteria as a Panacea to Alleviate Stress Effects of High Soil CaCO3 Content in Phaseolus vulgaris with Special Reference to P-Releasing Enzymes

The present study examines the role of leguminous compost (LC), humic acids (HA), and phosphate-solubilizing bacteria (P-SB) in alleviating stress effects high soil CaCO3 content Phaseolus vulgaris. Two pot trials for two consecutive seasons; fall 2019 summer 2020 were implemented an open greenhouse. A mixed three-way ANOVA, independent factors (season treatments) one within (time) used with four replicates. Residual maximum likelihood (REML) analysis was model studied traits. Inoculation calcareous P-SB (a 1:1 mixture Pseudomonas sp.; Ps. mallei cepaceae) significantly exceeded LC, HA, or even LC+HA positive results obtained. facilitated nutrient solubility (e.g., N, K, Fe, Mn), including conversion insoluble phosphorous into a form available tested due to increased enzymatic activities phosphatases phytases). This mechanism, combined decrease calcium carbonate increase cation exchange capacity (CEC) organic matter (OM) content, availability various nutrients plants, P, soil, which contributed plant output. Adequate P plants led marked acid phosphatase activity under CaCO3. concluded that use promotes biological activities, availability, thus productivity soils, enabling vulgaris withstand produced by through development and/or adoption potentially effective mechanisms. Strong highly significant interactions between treatments time observed using Wald’s statistics test, indicates correlation.