How to Treat Choanephora Rot

Asked August 26, 2018, 1:04 PM EDT

The flowers on my yellow squash are falling off or those that do bear fruit are turning black at the ends. I did some on line research and I determined that it is caused by a fungal disease called Choanephora Rot. What can I do to treat this fungal disease and possibly save some of my squash crop?

Prince George's County Maryland squash choanephora rot vegetable turning black at ends

1 Response

Choanephora fruit rot starts on blossoms and is worse during wet weather. Prevent it by removing the flower when fruit starts to enlarge. http://extension.umd.edu/hgic/choanephora-rot

Here are some other possibilities.
If the fruit ends turn brown/black it could be blossom-end rot (calcium deficiency caused by uneven soil moisture and/or low calcium levels in soil). http://extension.umd.edu/hgic/blossom-end-rot-vegetables

Poor pollination. If too few bees visit flowers, the immature fruits may shrivel and drop. http://extension.umd.edu/hgic/pollination-problems-vegetables

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