DIAGNOSIS AND PRESCRIPTION FOR MANAGEMENT OF BACTERIAL WILT OF POTATO

Abstract

The experiments were carried out during 2009 to 20]3 on diagnosis and prescriptions for management of bacterial wilt of potato. The studies were undertaken in 250 growers from five locations viz. Mymensingh Sadar. Kushtia Sadar, Kumarkhali, Chandina and Sher-e-Bangia Nagar. The highest and lowest incidence (20.8'*) and (l2.6o/~) of bacterial wilt of potato was recorded at Marichar Char and Kushtia Sadar. Rulstonia solanaceanun produced bacterial wilt of potato disease. The prescription given by Plant Disease Diagnostic Clinic (PDDC) was effective ill the farmcrs field against the disease. From this studv it may be prescripred that the Cupravit-50 WP [Copper-oxchloride (CuOCl,li @ 7 gll sprayed 4 times around root zone at 15 days interval with first time application of 50 gm mixed terti lizer (Ash: KCl=20: I) per plant for the management of bacterial wilt of potato. It was also revealed that the practices reduced the disease incidence by 80.79% over control. The yield increased by 84.57% and benefit cost ratio (BCR) was 4.62.