Fungicide spray schedule for economical management of potato late blight
Shailbala Pundhir. V. S
Pantnagar Journal of Research ; 2008 [Vol.6] Pages:114-117
Abstract
Late blight of potato is caused by Phytopthora infestans (Mont.) de Bary is responsible for considerable economic losses. The disease appears regularly in epiphytotic proportion in the hilly regions of the country and cause considerable reduction in yield and quality. Most of the recommended fungicides often fail to provide adequate control if not applied at appropriate time. Moreover, there is high risk of development of fungal races resistant to systemic fungicides. Josepovits and Dobrevalszky (1985) reported that the use of mixture of fungicides with different mode of action as the best strategy to delay the buildup of resistance. Application of alternate sprays of systemic fungicides has also been reported to restrict the development of resistant strains of pathogen (Skylakakis, 1981). In the present communication, potential to control late blight have been studied with a view to develop an effective and safe spray schedule for management of this disease.
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