Application of Bacillus pumilus isolates for management of black rot disease in strawberry

Abstract Background Black root rot of strawberry plants caused by Rhizoctonia solani , Fusarium and Pythium sp. is a serious disease in Egypt. Biocontrol agents have frequently proved to possess paramount safe tools against many diseases. The impact soil treatments with 3 Bacillus pumilus isolates on black R . F ., under laboratory field conditions was examined herein the commonly used ‘Festival’ cultivar. To increase bacterial adhesion distribution roots, each seedling dipped cell suspension at 1 × 10 8 colony-forming units/ml separate isolate for 30 min then mixed 5% Arabic gum. Results tested B significantly reduced growth area these fungi. two Nos. 2 more than 85.2, 83.6, 89.0% R. F. sp., respectively. Likewise, ( P ? 0.05) inhibited conditions. Isolates suppressed incidence 64.4 68.9% severity 65.3 67.3%, fungicide Actamyl had effect similar that isolates. B. enhanced parameters yields plants; raised yield 66.7 73.3%, Conclusions could effectively manage herein. Due significant yield, should be further large scale