Investigating PGPR bacteria for their competence to protect hybrid maize from the factor drought stress

Abstract Drought and heat are severe environmental stresses that constantly affect plant growth development. Maize ( Zea mays L.) is known for its sensitivity to abiotic stresses, which often causes significant yield losses. With growth-promoting rhizobacteria (PGPR), the harmful effects of drought stress on plants can be alleviated. The aim present study was investigate physiological traits affected by in a treatment including four PGPR bacteria, two regimes irrigation stages phenophases, analysis influence individual factors their combined effects, respectively. In addition, investigations covered testing nutrient acquisition ability use efficiency, stimulating effect performance trials. largest amount soluble orthophosphate produced Pseudomonas putida (51.636 µg/cm 3 ). This significantly more than phosphate solubilized Bacillus pumilus (15.601 µg/cm3), fluorescens (14.817 µg/cm3) megaterium (14.621 µg/cm3). germination vigour seedlings with 55% higher, represented value 15,237.125, comparison control, 9792.188. resulted most outstanding fresh/dry weight ratio (7.312) compared control (7.780), when interaction between all taken into account under stressed conditions at 50% female flowering stage. highest dry matter content (18.344%) (17.344%) measured case during milk stage development conditions. field trial, treated KD2 ) presented higher results aspect grain (6.278 t/ha) (5.468 t/ha).