The Quality and Productivity of Strawberry (Fragaria × ananassa Duch.) Improved by the Inoculation of PGPR Bacillus velezensis BS89 in Field Experiments

Efficient plant-growth-promoting rhizobacteria (PGPR) used as biofertilizers and biological control agents are promising substitutes for minimizing the application of synthetic agrochemicals in crop production. We studied effect PGPR strain Bacillus velezensis BS89 alone combination with three forms nitrogen fertilizers (ammonium nitrate, carbamide, ammonium sulfate) on productivity two strawberry varieties three-year field experiments. first showed that strawberries demonstrated same fertilizers. Use increased chlorophyll content plant leaves by 2.7–6.8%, also yield berries 6.7–36.4% cv. Rusich 7.5–19.3% Troitskaya depending form fertilizer. The best results plants were achieved variant + nitrate (41.9–57.4%), Troitskaya—in carbamide (8.1–38.8%). Three-year use resulted an increase runner’s weight 212.1%, roots 120%, thereby significantly improving mineral nutrition plants. This is mainly associated growth-promoting activity BS89, which was able to produce a high amount IAA—494.1 µg/mL. believe can be successfully growing strawberries. However, each variety requires careful selection composition analysis compatibility strain.