Suppression of Alternaria Solani in Potting Mixture Amended with Crotalaria Trichotoma Based Composts

By : Ravikumar M. Chaluvaiah , Rajkumar H. Garampalli

Page No: 61-66

Abstract
In the present study botanical soil amendments, namely; botanical composts (obtained from Crotalaria trichotoma), enriched botanical compost (C. trichotoma compost enriched with Trichoderma viride), uncomposted botanical powder (C. trichotoma dried powder only) and enriched uncomposted botanical powder (C. trichotoma dried powder enriched with Trichoderma viride) tested for mangement of early blight of tomato. The inoculum of Alternaria solani mixed in soil potting media in the ratio of 99:0.5:0.5 w/w of soil:inoculum:each compost treatment. Splash irrigation done twice a day to incite disease in treated plants simulates natural condition. All the compost amendments at 0.5% rate were found highly effective in suppressing the disease, with enriched botanical compost, uncomposted botanical powder, enriched uncomposted botanical biomass, and botanical compost showing percent early blight index of 16.5%, 18.3%, 45.1% and 23.3% respectively as compared to 83.3% percent early blight index in negative control.

Authors :
Ravikumar M. Chaluvaiah and Rajkumar H. Garampalli
University of Mysore, DOS in Botany, Mysore, Karnataka, India.
 

DOI: https://doi.org/10.32381/JPSR.2021.37.01.8