Bacillus licheniformis PR2 Controls Fungal Diseases and Increases Production of Jujube Fruit under Field Conditions

There is a growing interest in using biocontrol agents to control fungal diseases and increase the production of jujube fruit (Zizyphus jujua Miller var. inermis Rehder). The purpose this study was use Bacillus licheniformis PR2 inhibit promote orchards. B. secreted 92.4 unit/mL chitinase, which inhibited phytopathogens through hyphal alterations with swelling bulbous structures. also mycelial growths pathogens Botrytis cinerea, Colletotrichum gloeosporioides, Phytophthora nicotianae by 81.3%, 60.1%, 67.0%, respectively. increased yield 17.9 kg/tree reducing rotting damage caused pathogens, 3.2 times higher than that achieved without treatment. In addition, produced auxin, promoted cell division after flower fertilization, thus increasing length diameter 1.2-fold compared those control. These results confirmed eco-friendly could effectively orchards improve its size yield.