Vol. 12, Issue 2 (2023)

Author(s):
Bimla, RK Bagri and Lalita lakhran

Abstract:
S-22 tomato (Solanum lycopersicum) is a cultivated variety of tomato belonging to family Solanaceae. The crop S-22 tomato is infected by many diseases including fungi, bacteria and viruses. Among the fungus diseases, Early blight of tomato caused by Alternaria solani during all stages of plant growth. In the experiment of in vitro efficacy of bio-control agents against Alternaria solani all treatments showed significant effect to inhibit growth of the pathogen. Maximum mycelial growth inhibition was observed with Allium sativum clove extracts followed by Azadirachta indica, Gingiber officinali, Ocimum sanctum, Calotropis gigantia, Datura stramonium and Aloe barbadensis leaf extracts. Percent mycelia growth inhibition of disease organism was ranged from 35.84 to 83.15 percent.