What should be noted when applying herbicides to summer corn?
What should be noted when applying herbicides to summer corn? Please explain. Under no-till direct seeding conditions, weed control in summer corn fields becomes more difficult. First, the shading of wheat straw and wheat stubble reduces the control effect of herbicides; second, weeds left over from the wheat field make the one-time "pre-emergence" effect unsatisfactory. In fields with wheat stubble...
What should be noted when applying herbicides to summer corn? Please explain.
Under no-till direct seeding conditions, weed control in summer corn fields becomes more difficult. First, the shading of wheat straw and wheat stubble reduces the control effect of herbicides; second, weeds left over from the wheat field make the one-time "pre-emergence" effect unsatisfactory. When carrying out chemical weed control in plots covered with wheat stubble and straw, the amount of water for dilution should be increased to ensure that the herbicide solution can penetrate the straw mulch layer and reach the soil surface. For plots with weeds left over from the wheat field, the method of "combining pre-emergence and post-emergence control" can be used for control. For plots with relatively severe leftover weeds from the wheat field, the weed control strategy of "one pre-emergence application and one post-emergence application" can be adopted before sowing and before seedling emergence; for plots with relatively few leftover weeds from the wheat field, the weed control strategy of "pre-emergence first, post-emergence later" can be adopted before corn sowing and before seedling emergence and during the corn seedling stage; for plots where wheat field weeds are distributed in strips or patches, the weed control strategy of "post-emergence first, pre-emergence later" can be adopted.
Click to get more corn planting techniques
Click to get more food crop planting techniques