Help to identify and prevent diseases in melon and cucumber

Asked August 10, 2020, 12:34 PM EDT

Can you help me identify what is compromising my cucumber and melon plants? Cukes were China jade variety and did beautifully for 3-4 weeks. Planted out from a start indoor. Leaves became yellow the. Brown and crispy. Also some white yellow spots Melons got brown spots Thank you Ellen Looking at trying to prevent. Next year!!!! I do companion plant w nasturtium

Washtenaw County Michigan

1 Response

The first photo looks like it may be Angular Leaf Spot (caused by bacteria).
The 2nd photo looks like it may be Alternaria Leaf Blight (caused by fungal disease).
Keep foliage dry when watering. Rotate crops every year. Choose disease resisistant cultivars.
http://vegetablemdonline.ppath.cornell.edu/factsheets/Cucurbits_Foliar.htmz
https://plantvillage.psu.edu/topics/cucumber/infos
Further info here:
https://apps.extension.umn.edu/garden/diagnose/plant/vegetable/