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Fusarium wilt (Fusarium udum Butler) is an important soil borne disease of pigeonpea [Cajanus cajan (L.) Millsp], which causes significant yield losses in susceptible cultivars throughout the pigeonpea growing areas. The soil borne fungus enters the host vascular system at root tips through wounds leading to progressive chlorosis of leaves, branches, wilting and collapse of the root system. Temperature, soil type, water retentive nature of the soil and nutrient availability has been shown to affect fusarium population. Disease management strategies have emphasized on integrated disease
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