Prevalence of some groundnut (Arachis hypogaea) fungal and viral diseases in the plains of West Bengal.
Groundnut viruses have been detected in almost all the groundnut-growing states of India along with other diseases and causes considerable crop losses. In West Bengal also, some of the groundnut viruses have been frequently observed, including stripe, mottle, and bud necrosis. In this experiment, the field incidence of two most serious fungal diseases of groundnut, namely tikka disease [Mycosphaerella arachidis] and rust [Puccinia arachidis], and two viral diseases, stripe and mottle, were taken during 2004-05 in all three cropping seasons, i.e. pre-kharif, kharif and rabi. The results showed the prevalence of all the four diseases with higher incidence of fungal diseases during the kharif season and viral diseases during the rabi season. The incidence of both fungal and viral diseases increased with age of the plants.