Antagonistic Potential of Trichoderma spp., Botanicals and Fungicides against Alternaria solani Causing Early Blight of Tomato in-vitro Conditions
Journal: International Journal of Advances in Agricultural Science and Technology (IJAAST) (Vol.7, No. 9)Publication Date: 2020-09-30
Authors : Yaragorla Hanumantha Rao Hanuma Yadhuvamsha; Ph. Sobita Devi; Vishnu Vardhani Vemavarapu; K Rishitha Chowdary;
Page : 77-87
Keywords : Alternaria solani; Antagonistic Potential of Trichoderma spp; Botanicals; Fungicides and Early blight of Tomato;
Abstract
The tomato is the edible, often red berry of the plant Solanum lycopersicum, commonly known as a tomato plant. The species originated in western South America and Central America. The area under tomato cultivation in Manipur accounts for about 0.15 million hectares with an average production of 2.10 million tonnes and productivity of 12.02 tonnes ha-1 during 2016-17. The major constraints in production of tomato are biotic and abiotic stress. Among the biotic stress Early blight caused by Alternaria solani inflicts tremendous losses to the crop. The present research was carried out to study in vitro evaluations of native Trichoderma spp., botanicals and fungicides against Alternaria solani causing Early blight of tomato which induces losses in Manipur. Food poison technique and Dual culture were aided in this investigation. The investigated results revealed that among bio control agents tested Mix (Trichoderma asperellum + Trichoderma harzianum), Trichoderma viride and Trichoderma asperellum effectively controlled mycelial growth of the pathogen by 74.92% and 73% respectively. Botanicals used in this study significantly inhibited the growth of the fungus, among which garlic (Allium sativum) gave the best results by showing 74.17% of inhibition at 10% concentration followed by garlic 5% and ginger 10% showed 66.98 to 61.05% inhibition, among fungicides Propiconazole 13.9% + Difenoconazole 13% gave the best results by showing of 100% inhibition at 0.1% concentrations.
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