PHYTORHTHORA: Black Rot

Ailments Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin over 7 years ago.

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It may also be caused by Pythium ultimum most destructive on cattleya types; high humidity favors it, so water into the pot and not on the leaves; control it with Truban drench at Hpg. AH86-72
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PHYTOPHTHORA: Black Rot Controls recommended: Captan at 1 ttpg.; Dexon at 1.5 ttpg. used as a spray or drench, where the whole plant is immersed. P71(2)-24; controls: Truban, Banrot, Physan 20. A80-356 0

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