Field Efficacy of Organic Amendments on the Population of Rhizoctonia solani and Fungal Foliar Diseases of Potato (Solanum tuberosum L.)
2014
Black scurf and fungal foliar diseases of potato could significantly be reduced by the treating with organic amendments in different combinations. Minimum incidence of the disease (8.93%) wasre corded on those plots were treated with FYM @20 t/ha. + 150:80:100 kg/ha NPK while, amongst total organically amended treatments, minimum disease incidence (11.85%) was recorded on those plots were treated with FYM on N basis as per recommendation as compared to control (25.67%). Plant nutrient sources are also responsible for the management of foliar and tuber borne diseases. Minimum percent disease intensity of early blight, phoma leaf spot & cercospora leaf spot were recorded 2.32%, 2.62% & 1.28% at 30 DAS and 19.80%, 36.56% & 11.46%, respectively at 90 DAS in treated plot with FYM @20 t/ha. + 150:80:100 kg/ha NPK treatment. Among the organic sources of plant nutrients, minimum percent disease intensity of early blight, phoma leaf spot & cercospora leaf spot were recorded 3.57%, 3.89% & 1.42% at 30 DAS and 38.16%, 44.09% & 13.76%, respectively at 90 DAS in treated plot with FYM on N basis as per recommended treatment.
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