Phytophthora rot on watermelon

disease symptoms on watermelon

Fruit rot on watermelon
Image provided by S. Kousik

Phytophthora capsici:

In watermelon, Phytophthora capsici primarily infects either seedlings or fruit, causing fruit rot. P. capsici is favored by rain and warm temperatures and spreads rapidly via water, including irrigation and surface water sources. The pathogen can overwinter in the soil and spores can persist in infested soil for as long as 10 years. Phytophthora also affects squash and cucumber.

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