Summer sowing corn fields generally use "Fuhua Yi A mixture", "corn treasure", "yucaojing" to carry out field weeding, but the effect is not ideal, the farmers have headaches are suspected to be product quality problems, but after expert analysis, This is not the case, there are several reasons for affecting the efficacy of pesticides :
1. Caused by wheat stubble: In recent years, the corn planting in the summer is mostly planted in the wheat field. After the wheat harvest, the corn herbicide is applied to the wheat bran. Weeds are not exposed to the drug after being unearthed, which seriously affects the normal function of the herbicide.
2, caused by drought: in general years, after wheat harvest until the beginning of July, often encounters high temperature and dry weather. After spraying herbicides, the liquid contacts the surface and the water evaporates quickly, so that the liquid cannot form a film on the surface. At the same time, it also hinders the transportation and conduction of the drug in the weeds, which seriously affects the normal function of the drug.
3, improper application of pesticides: Many people are spraying corn herbicides , not using the reverse type, but still using the same type of advancement like spraying other drugs, so that the liquid sprayed to the surface has not yet formed a film, That is destroyed by the footprints.
4, due to late use of drugs: At present, the corn herbicide we promoted is generally applied before the 2-3 leaf stage of weeds, but because the summer sowing corn is mostly wheat field interplanting, after the wheat harvest, many weeds in the field The age is already too large, which seriously affects the efficacy of the drug.
Tips for China's pesticide network : When using herbicides, first set the corn field in the wheat field. After the wheat is harvested, the rice must be smashed before applying the medicine. If it is drought, it should be applied after watering, and the application should be reversed. The film formed on the surface of the liquid is not destroyed, thereby ensuring good efficacy.
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