What Pesticides Are Best for Growing Potatoes? A Detailed Guide to Scientific Pesticide Selection

Potatoes are the world's fourth most important food crop, after wheat, rice and corn, and they are widely cultivated in China. So, what pesticides are used for growing potatoes?

1. What pesticides are used for growing potatoes?

The pesticides used for growing potatoes need to be applied according to their growth cycle and pest and disease symptoms. For example, for late blight, a 500-800 times dilution of mancozeb · flumorph powder can be sprayed; for viral diseases, a 1000 times dilution of 40% omethoate can be used; for ladybugs, a 3000 times dilution of 10% cypermethrin emulsifiable concentrate can be used; to prevent white grubs, 80% trichlorfon wettable powder plus 15-20 kg of fine soil can be made into medicated soil and spread in the planting furrow.

2. Potato Cultivation Methods

1. Site selection and land preparation

Try to choose land with relatively fertile soil and a relatively loose texture, among which sandy soil is most suitable for growing potatoes. When preparing the land, dig as deep as possible, break the soil up as finely as possible, and then apply base fertilizer.

2. Seed potato treatment

Seed potatoes should be taken out more than ten days before sowing and allowed to sprout at a certain temperature. When most of the potato sprouts have grown to the length of a fingernail, move the potatoes outdoors to sun them for about a week.

3. Sowing the seed tubers

When sowing, cut the potatoes at the places where they have sprouts. One potato can be cut into three to four pieces depending on the sprouting situation. Dip them in ash and they are ready for sowing. When sowing, plant them at certain intervals. Fertilize once at planting time, using mainly farmyard manure. Fertilizer must not come into direct contact with the seed pieces, so as not to burn the potatoes to death.

4. Field management

When the seedlings have 3-5 leaves, pay attention to controlling aphids; apply topdressing once each at the early budding stage and the full flowering stage, generally applying a 500 times dilution of ridomil plus urea or 1% monopotassium phosphate plus a tuber expansion agent; during the tuber expansion period, pay attention to strengthening field irrigation.

Since pesticides all have a certain toxicity, choosing excellent varieties when growing potatoes can reduce the occurrence of pests and diseases, thereby reducing the use of pesticides.