Environment
Phytophthora sojae favor fields that are poorly drained or highly-susceptible to flooding. Solving it only by creating optimal drainage does not restrict the pathogen because the field may be subject to continuous heavy rain which induces flooding. Similar to other Phytophthora, warm soil, intermittent rain (including the rain splashes that results from rain), and windy weather are favorable conditions for development and the spread of the disease respectively. The optimum temperature for its disease development is above 60°F.
Read more about this topic: Phytophthora Sojae
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