I want to know what problems occurred in the potato field.

Nirmalyadas09 lessons have some similarities with transition to Potato Late Blight primary symptoms. So, compare it in the literature that is laid down in plantix library. If you click on the green hyperlink that takes you to plantix library. Please do also the similar event for Powdery Mildew that is a white film like covering of fungal infestation. For both the disorders to correct, Mancozeb and Metalaxyl are most widely used formulation in wettable powder form.

This is not whiteflies attacked symptoms. It may be zebra chips disease symptoms. Which is transmitting by psyllid bugs. Please you may more verify.

Nirmalyadas09 How could you assume Potato Psyllid attack? Potato psyllids feed on potato foliage with needle-like mouthparts that suck out plant juices. Toxins from their saliva are injected into the plant as they feed. This causes “psyllid yellows” which turns leaves yellow or purple. Psyllid yellows also results in fewer, smaller, or misshapen tubers.

Psyllid bugs transmitting candidetus liberibacterium to the potato leaf when they suck juice from leaf. After that leaf become pink in colour and upwards rolling.

Nirmalyadas09 Thank you for your great insights 😃