Agri Doctor TipAgroStar Agronomy Centre of Excellence
See the gland present on the lower surface of cotton leaf:
This is the nectar gland present on the lower surface of the leaf and mid of the main vein. This is the physiology character of the cotton crop (Gossypium). Males of the parasites and sometimes ants & black ants come to the gland and feed the oozing material (just like honey) and survive. Many farmers asking about this gland, it’s not any disease; you can check and see on your cotton crop on the lower surface of the leaf.