Pak. J. Bot., 42(5): 3525-3532, 2010.

FREE FULL TEXT PDF

DETERMINATION OF MINIMUM INHIBITORY CONCENTRATIONS OF FUNGICIDES AGAINST FUNGUS FUSARIUM MANGIFERAE

ZAFAR IQBAL¹, MUHAMMAD ASLAM PERVEZ², SALMAN AHMAD¹, YASIR IFTIKHAR¹, MUHAMMAD YASIN¹, ALI NAWAZ³, M. USMAN GHAZANFAR¹ ALTAF AHMAD DASTI⁴ AND AHMAD SALEEM⁵

Abstract: Eight fungicides were evaluated for their In vitro effect on the colony growth of Fusarium mangiferae after 3, 8 and 16 days of inoculation in pre-amended Potato dextrose agar (PDA) medium. The fungicides showed variable response in inhibiting the colony growth of the pathogen according to their nature and specificity at different minimum inhibitory concentrations (MICs). Benlate 50 WP and Carbendazim proved to be the best fungicides giving 100% suppression of the colony growth. When decrease of colony growth over control was examined, Benlate and Carbendazim showed 100% decrease over control after 3, 8 and 16 days of inoculation. The fungicides Score 250 EC, Daconil W 75 and Captan 50 WP proved to be comparatively less effective. The fungicides were classified into three types i.e., I, II and III in reference to the sensitivity of F. mangiferae. Fungus proved highly sensitive to type-I fungicides (Benlate 50 WP, Carbendazim, Topsin-M 70 WP and Copper oxychloride 50 WP) with 100% suppression at tested MICs. The studies will be helpful to devise suitable control strategy to curb malformation in mango orchards.

¹University College of Agriculture, University of Sargodha, Sargodha, Pakistan

²Institute of Horticultural Sciences, University of Agriculture, Faisalabad, Pakistan

³Fodder Research Institute, Sargodha, Pakistan

⁴Department of Botany, Institute of Pure and Applied Biology, Multan, Pakistan

⁵Punjab Agricultural Research Board (PARB), Lahore, Pakistan.