EFEKTIVITAS PLANT GROWTH PROMOTING RHIZOBACTERIA Pseudomonas fluorescens DALAM PENGENDALIAN HAYATI PENYAKIT BULAI PADA TANAMAN JAGUNG

Abstract

Downy mildew is the main disease in maize that caused by the fungus pathogen Peronosclerospora maydis. P. maydis and its significantly effect to yield loss. The various controls have been done without the optimum result instead had inverse effect on human health. Plant Growth Promoting Rhizobacteria Pseudomonas fluorescens can be used as biological control agents against downy mildew and environmental friendly. Objective of this study was to know the effectiveness of P. fluorescens to control downey mildew and growth characters in maize. Randomized Block Design were applied with concentration of P. fluorescens as a treatment consist of 0 ml/L, 50 ml/L, 75 ml/L, 100 ml/L, and fenamidone fungicide 50 % as treatment check. Observed variables were plant height, number of leaf and symptom and intensity of downy mildew. The results showed that P. fluorescens effective to control downy mildew in maize.