Answer: Your bush cucumbers shouldn't climb trellises or cages, since they are bred to be compact plants. The cucumber symptom you describe is a pretty general one, but I think it has something to do with root damage or nutrient deficiency. If the steer manure you used was fresh, not composted, it may have damaged the roots. It sounds like your zucchini may have powdery mildew, but for both problems, I suggest calling your extension service for a positive I.D., since it's almost impossible to make a diagnosis without more information. Your extension service can be reached at 714-708-1606.
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