The timing of sowing after the use of glufosinate-ammonium needs to be carefully scheduled, usually taking into account the following factors:
1.Activity and duration of glufosinate-ammonium: Glufosinate-ammonium is a contact-killing herbicide, which mainly causes weed death by inhibiting glutamate synthase in plants. It has a relatively short duration in the soil, generally about 5-7 days, but its conductivity in plants is weak, and it has little effect on seeds.
2.Climatic conditions: Climatic conditions have a great influence on the degradation rate of glufosinate-ammonium. For example, rain may accelerate its degradation in the soil, so if it rains soon after glufosinate-ammonium is applied, seeds can be sown earlier.
3.Crop type: Different crops have different susceptibility to glufosinate-ammonium. For example, maize has a relatively low susceptibility to glufosinate-ammonium and is generally safer to sow 3-5 days apart, or even longer, after glufosinate-ammonium application.
Based on the above factors, it is recommended to wait at least 3-5 days, or even longer, for sowing after glufosinate-ammonium application to ensure safety. The exact timing also needs to be adjusted according to local climatic conditions, soil conditions, and crop types. Before planting, it is best to conduct a small area of testing to ensure that the herbicide is safe for the seeds.