How to Control Weeds after Summer Soybean Emergence
After summing up many years of experience, after the emergence of soybeans, herbicides can be selected based on the local soil conditions, weed species, and grass age. Firstly, we can use 25% Benzonsone water for dicotyledon weeds, 300 ml per mu, or 24% Kebula, 30 ml per mu, or burn 21.4% of weeds per mu. Milliliter, or with 20% soybean yellow powder, the amount of 4.5 to 5.5 grams per acre, respectively, against the water spray 40 to 50 kg. However, such pesticides should be applied within the period of three compound leaves of soybeans; second, monocotyledonous weeds can be used to kill 15% of the emulsifiable concentrate, 50-60 ml per mu, or 12.5% ​​of the herb oil per mu. 30 to 35 ml, respectively, watered 40 to 50 kg spraying, spraying time from the emergence to the early flowering period; third is the soybean field, which harms the heaviest harm to the dodder, can be used 48% diterpene EC, 225 to 250 ml per mu; Watered 40 to 50 kilograms, sprayed on 5-7 pieces of soybean at the compound leaf stage.
In order to improve the quality of weed sowing chemical weed control and avoid the occurrence of phytotoxicity, in the implementation process, the following points should be technically mastered: First, herbicides should be selected for the type of weeds in the field. When there are many broad-leaved weeds, Herbicides based on broad-leaved weeds and monocotyledonous weeds should be selected to prevent monocotyledonous herbicides; secondly, herbicides should be applied strictly in accordance with the growth period of soybeans; Herbicides should be applied at standard doses, but the amount of organic matter with high content can be increased by about 20%. Sandy soil and low-humidity fields should be reduced by appropriate doses. Fourthly, field soil moisture should be moderate when spraying, and there should be no time for spraying. Do not spray; Fifth, soybeans are more sensitive to herbicides, herbicides that have not been tried can not be blindly applied, but can not mix.
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