STUDIES ON CUMIN BLIGHT INCITED BY Alternaria burnsii (UPPAL, PATEL AND KAMAT) AND ITS MANAGEMENT

Cumin (Cuminum cyminum L.) popularly known as Jeera or Jiroo is the most important spice crop in India. Gujarat is second largest producer next to Rajasthan with 50-55% of total production of India. Cumin crop suffers with blight disease caused by Alternaria burnsii. Looking to the seriousness of the disease, investigations on certain aspects of the management were carried out and reported here as under: Survival of A. burnsii of Anand location on seed was 100% during April and May and decreased to 70% during October, November under laboratory condition (25°C temperature and 60-70% RH). Whereas, in crop debris of Anand location buried in the soil, its survival was 60 to 40 % during the month of October and November, 2009. Maximum temperature (r = 0.864**), bright sunshine hour (r = 0.751**) showed highly positive correlation with disease intensity. Similarly, minimum temperature (r = 0.399), wind direction i. e. morning (r = 0.322) and evening (r =

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