Sweet potato seedlings are too strong. Do you need to cut some?

When sweet potato seedlings grow vigorously, they should be controlled in time, otherwise the yield of sweet potato will be affected. Spraying water with plant growth regulators such as paclobutrazol or chlormequat chloride to control the growth, and controlling the growth of sweet potato seedlings for the first time when they grow to 35-50 cm can prevent the growth of fibrous roots and control the loss of nutrients; When the sweet potato vine grows to 78 cm, the second control is carried out to promote nutrient supply, and the purpose of control is to increase yield.

Matters needing attention in planting sweet potato seedlings

After the sweet potato seedlings are planted, the herbicide propisochlor, a special herbicide for sweet potato-potato technology, is selected, a bottle of medicine is sprayed with five sprayers, and an acre and a half is poured to ensure no weeds for 40-60 days. If you don't use closed herbicides, there are too many weeds in the middle and late stages, and you can use sterile herbicides (paraquat) to spray weeds directionally.

The method is: first divide the two rows of potato seedlings in the ditch into another row, then divide them into another row every other row, then spray them directionally, and then spray the remaining seedlings in the ditch after spraying. Spraying must be carried out in windless weather. Don't spray it on potato seedlings. If the closed herbicide is not sprayed, the special potato technology Tianhe broadleaf herbicide should be used in the sweet potato growth period.