1978•Unpublished venueRequires access
CHEMICAL CONTROL OF PHYTOPHTHORA ROOT ROT ON FULLY GROWN AVOCADO TREES
Jm Darvas, Westfalia Estate
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Abstract
SUMMARY After four years of continued treatments with metalaxyl, Ethazole and fosetyl-AI the following conclusions can be made: 1. Metalaxyl's impressive controlling effect at the 2,5g a.i. per m 2 dose rate is clearly fading in the third and fourth year. This is associated with a progressively shortened post-treatment inhibition of the fungus by the chemical in the soil.