Cultivation of veggies during the wet season can be very interesting in a sense: little or no form of irrigation and by extension reduction in cost of production, faster growth rate experience by most crops, and conducive weather condition for farm hands etc. but the downside of this period can be very devastating – Fungi and Bacterial diseases infestation on the rise!
During wet season, fungi and bacterial diseases naturally thrive due to prolong wetness often experience on plant leaves. It is therefore essential that farmers must be ahead in this period by observing strict adherence to chemical or organic application protocol meant to combat infection.

The downy mildew and its destructive properties
Every veggie’s family is associated with particular set of diseases. What I meant by this is that some diseases for example early blight and bacterial wilt are only associated with vegetable crops in solanaceous family (the family which includes tomato, pepper, and eggplant). These same diseases would not ordinary affect crops in cucurbit family: the family of cucumber, watermelon, pumpkin, squash etc. Your ability as a farmer to understand this is crucial to the kind of preparation you should have ahead of time. Going by this preparation, it is wise you take preventive measure rather than curative ones. In order word, most diseases in veggies are easier to prevent than to cure.
The downy mildew is one of the most destructive diseases of cucurbit family. It is prevalent in wet season when humidity is very. Unfortunately, it can only be noticeable at early stage by an experienced farmer. It mostly starts with patches of pale yellow spots on the upper leaf surface which later turns brown or necrotic. The infection mostly starts on older leaves close to the soil. If left un-abated, it would continue to spread to upper and younger leaves follow by the whole plant’s leaves turning yellowish. The yellowish of leaves in most case is followed by drying.
You may want to ask, how does this affect the plant in a real sense? Very greenish leaves are directly proportional to good yield. The yellowish and drying of leaves caused by effect of downy mildew affect greatly the photosynthetic ability of the plant thereby imparting on the yield. Therefore, if you want good yield from your cucumber crop, then you must keep downy mildew at bay.

The preventive measures
Putting downy mildew under control or at bay isn’t a hard thing. I am about to share with you the measures you need to follow to ensure that your cucumber farm (or any other cucurbit) is safe from downy mildew infection.
Rule 1: Use resistance/tolerant variety - This is number one p...
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wow! This is very insightful. There are also many other diseases that plague cucumbers, you can check out this blog www.gricd.com.ng/2017/09/18/how-to-plant-and-control-diseases-in-cucumbers/ for more details on how to detect and cure these diseases.