Potato Virus Y
Potato Virus Y : Plants are stunted and foliage shows mild roughness, faint mottling and slight distortion (left photo). Later, the foliage may curl downward, giving the plant a drooping appearance (right photo). There are no symptoms on fruit.
Control: Avoid planting tomato crops close to established potato, tobacco, and pepper crops. Plant tomato crops in areas less likely to support aphid populations. Use netting of 32-mesh or greater to exclude aphids from transplants.