What herbicide is good to use after scallions emerge

After scallions emerge, soil-treatment herbicides such as 33% pendimethalin EC, 50% napropamide wettable powder or 20% alachlor EC can be used, among which 33% pendimethalin EC has the best effect. It is best to apply the herbicide in the morning or evening on a sunny day. If the four-leaf stage has been missed, the herbicide must be used with caution, and weeds should be pulled out by hand as much as possible.

How to use: use 100-150 ml of the agent per mu, add 40 kg of water, and spray evenly on the soil surface after sowing scallions but before emergence, before transplanting, or before the stubble scallions turn green. When weeds are at the 2-to-4-leaf stage, use 15% fluazifop-P-butyl EC at 50-75 ml per mu, add 40 to 50 kg of water, and spray on the stems and leaves; the weeding effect is also very good.

When choosing a herbicide for scallions, it is best to choose the morning or evening period on a sunny day. If the 4-leaf stage has already been missed, the herbicide should be used with caution, and it is best to pull out the weeds by hand.

The herbicide used after scallions emerge must be chosen carefully, otherwise it will affect the growth of the scallions and fail to protect the crop. If the best weeding period has been missed, it is best to pull the weeds out by hand so as not to affect growth.