Populations of a metalaxyl-insensitive isolate of Phytophthora parasitica from a nursery in southern California were determined every 2 wk for 10 wk from the root zones of container-grown Cartharanthus roseus either treated or not treated with metalaxyl or fosetyl-Al. When compared with no treatment, metalaxyl applied every 4 wk as soil drenches at 18.8 or Jr.4 mg a.i./L and fosetyl-Al applied every 4 wk as foliar sprays at 4.8 g a.i./L had no effect on populations of the isolate (...)
No takes yet. Share an insight, caveat, or question.
D. M. Ferrin (1992) studied this question.