Vol. 11, Issue 3 (2022)

Author(s):
Desetty JMSNK Sri Veda, Pravallika Sree Rayanoothala and Prabir Chakraborti

Abstract:
The potential biocontrol agents Trichoderma harzianum, and Pseudomonas fluorescens in alone or combination were used as seed-biopriming for reviewing their efficacy in reduction of the devastating disease, the Alternaria leaf spot in chilli (Capsicum annuum). Considering two important seasons, the Rabi season was comparatively imperative as its disease severity was more. In chilli, the disease index was significantly reduced in combining the Trichoderma harzianum + Pseudomonas fluorescens-treated seeds, followed by the T. harzianum treatment compared to the control (hydro-primed). Chilli seeds were primed with Trichoderma harzianum + Pseudomonas fluorescens revealed maximum disease protection that was displaying favour in pre-kharif and early stage (35DAS) in comparison to rabi and 60DAS of chilli production. The ability of genotype indicated variation where the distinct variation was noticeable in V2 (G-4) mentioning its high tolerance at 35DAS. The application of combined bio-priming may be suitable to control Alternaria leaf spot in chilli.