Abstract

Systemic chemicals wore tested for their effiency to control anthracnoso disease of Dolichos lab-lab caused by the fungus Colletotrichum lindemuthianum. Among them only nickel chloride was absorbod hy the plant through the roots and gave protection from infection. Systematie translocation of nickel chloride was also confirmed by the absence of growth of the fungus around the leaf dises taken from the nickel chloride treated seedlings whon incubated in a potri dish containing potato dextrose agar seeded with conidia of Colletotrichum lindemuthianum. Nickel chloride solution applied to the soil was also absorbed by the plant through the root and afforded resistance to infection. Treating the seeds in nickel chloride solution (2 ppm.) before sowing, prevented infection up to 13 days after germination.

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