Abstract

Certain Plant Growth-Promoting Rhizobacteria (PGPR) and yeast antagonists were evaluated against mango anthracnose incited by Colletotorichum gloeosporioides (Penz.) both in vitro and in vivo conditions. Among the antagonists, Pseudomonas fluorescens (FP7) significantly reduced the in vitro growth of C. gloeosporioides. For field evaluation, commercial cultivar Alphonso was selected. Talc-based bioformulations with and without chitin amendment were prepared and sprayed at 15 days and 30 days intervals. The spray was initiated from pre-flowering stage with a concentration of 0.5%. Among the bioformulations, P. fluorescens (FP7) amended with chitin sprayed at 15 days intervals was found to be significant in reducing the anthracnose incidence and subsequently increased panicle number, mean number of fruits and fruit yield.

Keywords: Mango, Anthracnose, Pseudomonas fluorescens, Saccharomyces cerevisiae, Bacillus subtils, Chitin