Diseases Name: Downy mildew / Crazy top https://www.agmarks.com/disease-management/Maize/disease-data
The most characteristic symptom is the development of chlorotic streaks on the leaves. Plants exhibit a stunted and bushy appearance due to shortening of the internodes.
White downy growth is seen on the lower surface of leaf. Downy growth also occurs on the bracts of green unopened male flowers in the tassel.
Small to large leaves are noticed in the tassel. Proliferation of auxillary buds on the stalk of tassel and the cobs is common (Crazy Top).