Please great famers have ever exprience this kind of problem ion your cucumber and what did you do to stop it. Or in specific terms what kind of disease is this.

Did you carry out any soil test before planting? Looks more of Nitrogen deficiency to me.

Besides you should carry out staking to avoid infectious disease.

yellowing of leaves is an indication of nitrogen deficiency. add NPK or urea to increase the nitrogen level of the soil

Everything about your farm is not so good. Those who made comments up are not far from the truth. Before I write further, what is the name of the variety you sowed?

What a lazy and untidy farmer you are, you need to step up.

This picture look like a watermelon farm to me, not cucumber.

If yellowing occurs mostly in the lower part of the plants, its most likely nitrogen deficiency. If the lowest leaves are green while leaves in the middle or top part of the plants are yellow, then its it's probably magnesium deficiency.

You are not alone I experience this also in my farm. I think it should be nitrogen deficiency as said by some farmers. For me I planted darina variety, it is really sad after putting all effort.

This is pix from my farm

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Hello farmers investigation reveals that its a serious virus infection that affects cucumber, water melon, egg plant , citrus etc and it can
covers like 600km in 2 days.

Abusamie:
Hello farmers investigation reveals that its a serious virus infection that affects cucumber, water melon, egg plant , citrus etc and it can
covers like 600km in 2 days.

Name of viral infection?