Concept of plant disease in agriculture

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• It is one of the important cash crops of Gujarat and

Rajasthan. In Gujarat, its cultivation is mainly confined to

North Gujarat and Saurashtra regions. Mehasana, Patan,

Banaskantha, Sabarkantha, Surendranagar, Ahmedabad and

Rajkot are important cumin growing districts of Gujarat.

While, major cumin growing areas in Rajasthan are Jalore,

Barmer, Nagaur, Jodhopur, Pali, Ajmer and Tonk districts.

• The climatic conditions of Gujarat and Rajasthan are more

favourable for cumin cultivation, these two states

contributes more than 80% in National area and


• Alternaria blight caused by Alternaria burnsii (Uppal, Patel

& Kamat) is most devastating disease in major cumin

growing areas in Gujarat and Rajasthan. The volatile oil i.e.

cuminol content of seeds is reduced due to the disease.