Epidemiology and Management of Bitter Gourd ( Momordica charantia L. ) Mosaic
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Date
2021-02
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Sher-e-Kashmir University of Agricultural Sciences and Technology Jammu, J&K
Abstract
Bitter gourd (Momordica charantia L.) is one of the most important and traditional summer season vegetable crop cultivated in India. Diseases caused by viruses are a major problem in bitter gourd causing considerable yield loss. In the present investigation, survey was conducted in the different bitter gourd growing areas of Jammu district particularly R.S. Pura, Akhnoor, Bishnah, Chatha and Marh to determine the incidence of bitter gourd mosaic disease. It was observed that the disease was prevalent in all the locations and per cent disease incidence varied from 17.22 to 35.55 per cent with overall mean of 26.44 per cent. Weather parameters played an important role in disease development and there was a positive and significant correlation between temperature (maximum and minimum) and disease intensity whereas, maximum and minimum relative humidity had negative correlation and rainfall had no significant relationship with disease development. Maximum percentage of disease intensity was recorded at 20th meteorological standard week (MSW), when the corresponding maximum and minimum temperature, and relative humidity were 34.90oC and 19.20oC, 62.00 and 31.00 per cent respectively. Eighteen bitter gourd germplasm line were screened under field conditions against the bitter gourd mosaic disease and it was found that Kathi Selection was highly resistant and Pusa Hybrid 1 and Abhishek were resistant. Palee, F1 Hybrid-spl., Prachi F1, Liberty, Punjab 4 and Pusa Domausmi were moderately resistant. However, Jaunpuri Long, Preethi, Jhalari Long and Jhalari Shilpa were susceptible and Vikrant, Monika, Co, Araya and Aman were moderately susceptible. Different chemical as well as non-chemicals were evaluated against the disease under field conditions. It was observed that application of spiromesifen recorded the lowest disease intensity and foliar and seed application of imidacloprid was also effective against the disease and its vector under field conditions.
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Preferred For Your Work Devi, M. 2021. Epidemiology And Management Of Bitter Gourd (Momordica Charantia L.) Mosaic. M.Sc.Thesis, Sher-E-Kashmir Un.Of Agr.Sc &Tech.Jammu