The Dry-Rot of Potatoes.

BIOAUTOGRAPHY SHOWS ANTIBIOTic PRODUCTION BY SOIL BACTERIAL ISOLATES ANTAGONISTIC TO FUNGAL DRY ROT OF POTATOES

Twenty bacterial antagonists of postharvest dry rot of potatoes (caused by Fusarium sambucinum) were screened for the production of antibiotics by bioautography. Samples of liquid cultures of bacterial strains harvested at three growth times and extracted with three solvents at three pHs were used to directly detect antibiotics inhibitory to F. sambucinum grown on the surface of thin-layer chro...

Xvi. the Biochemistry of Dry-rot

In vitro anti-fungal activity of watercress (Nasturtium officinale) extract against Fusarium solani, the causal agent of potato dry rot

Background & Aim: The aim of this study was to assess the antifungal effect of the watercress extract on the growth of Fusarium solani, the causal agent of potato dry rot. Experimental:  This research was done in a completely randomized design with three concentrations and four replicates on potato dextrose agar (PDA) culture medium. Results: Results of this study indicated that all ...

In vitro anti-fungal activity of watercress (Nasturtium officinale) extract against Fusarium solani, the causal agent of potato dry rot

Background & Aim: The aim of this study was to assess the antifungal effect of the watercress extract on the growth of Fusarium solani, the causal agent of potato dry rot. Experimental:  This research was done in a completely randomized design with three concentrations and four replicates on potato dextrose agar (PDA) culture medium. Results: Results of this study indicated that all ...

The Effect of Wounding, Temperature, and Inoculum on the Development of Pink Rot of Potatoes Caused by Phytophthora erythroseptica

Pink rot, caused by Phytophthora erythroseptica Pethybr., is an important disease of potato (Solanum tuberosum L.) (20). The name of the disease describes a characteristic and diagnostic pink color that appears after infected tissue has been cut and exposed to air for 20 to 30 min (8,12,17). Other symptoms of pink rot include dark discoloration of the skin and lenticels of infected parts, purpl...