Assessment of Incidence of Chilli Leaf Curl Virus, Role of Environment and Disease Management

Abstract

The present study “Assessment of incidence of chilli leaf curl virus, role of environment and its management” was carried out at Chilli LCV pone are of Bundelkhand region at Tikamagarh location of Madhya Pradesh. Among diseases affecting chilli crop, leaf curl virus is one of the major threat. In experiment, 10 chilli cultivars namely ZH-927, Gypsy, Pusa Jawala, Surya Pariksha, Surya-31, Meenam-(074), Mahy-Yasash, Disha, Pride and Arka Harita were screened under open field conditions for leaf curl virus. Six insecticides viz., Methyle dematon 25 EC @ 0.025%, Imidacloprid 17.8 SL @ 0.003%, Acetamaprid 20 SL @ 0.025%, Diamethoate 30 EC @ 0.5%, Thiamethoxam 70 WG@ 0.005% and Neem seed kernel extract @ 5% were tested against disease. In screening among all cultivers, ZH-927 was identified as resistant whereas Surya Pariksha, Disha and Arka Harita showed susceptible reaction. In case of management of leaf curl virus vector, Imidacloprid and Acetamaprid were found effective in inhibiting the leaf curl disease incidence followed by Thiomethoxam, NSKE, Methyl demeton and dimethoate. Temperature was found positive correlation with disease incidence. As the temperature increases, there is a corresponding increase in the incidence of the disease. Relative humidity and rainfall showed negative correlation with disease incidence as relative humidity and precipitation increased the disease incidence will decrease.