Main factors affecting the herbicidal effect of glyphosate

The effect of glyphosate in controlling weeds is related to the biological activity of glyphosate itself, that is, the effect of pharmacodynamics, and also on the weed objects we control, the application environment, and the method of using the human.

Let's share with the pros to share the factors affecting the herbicidal effect of glyphosate. Why does glyphosate not kill the weeds? After the roots are asked, the pros will know the Australian.

The main factors affecting the herbicidal effect of glyphosate are:

One is the weed factor . Glyphosate is a herbicide for stems and leaves, and the herbicidal effect is related to the plant height and leaf age of weeds. Practice has shown that the weeding effect is best when the weeds are three to five leaves. Because the weeds are at a young age, the growth begins to develop, and it is softer, and the root system is still underdeveloped. However, it is sensitive to herbicides, so the herbicidal effect is good. At this stage, the resistance of weeds is gradually enhanced, and the control effect is reduced. Of course, the resistance to weeds is even worse.

The second is the application of soil conditions : In practice, we conclude that the weeds with good soil, fertilizer and water conditions are vigorously growing, the stems and leaves are soft and tender, sensitive to herbicides, and the weeding effect is outstanding. On the contrary, the weeds growing in the shallow or arid soil of the sergeant layer have a strong growth environment, which is resistant to harsh environments during growth, thickening of the stratum corneum on the surface of the stems and leaves, and opening of the stomata of the leaves of the plants. The angle is small and the absorption of the herbicide is poor, so the herbicide effect is poor.

The third is the temperature at the time of application . Temperature is the most important factor affecting the herbicidal effect of glyphosate herbicides. After glyphosate is absorbed by weeds, the higher the temperature, the faster the meristematic tissue conducts the drug, and the more the drug accumulated in the rhizome, the more obvious the effect. In extremely low temperature conditions, herbicides are often poorly applied.

The fourth is the air humidity at the time of application . Spraying the herbicide under high-humidity air conditions facilitates the weed absorption of the herbicide. For example, in the vigorous period of weeds, the application of herbicides in the early days of rain and clear is obvious. One of the reasons is that the humidity of the air is better.

The fifth is the effect of light on the application of herbicides . The effect of glyphosate herbicide on weeds is mainly green stems and leaves. Therefore, photosynthesis of chlorophyll is one of its points of action. In general, under strong light, photosynthesis is strong, and there are many photosynthesis products formed, which is beneficial to the transmission and activity of herbicides.

Sixth, rainfall affects the herbicidal effect of glyphosate . If the glyphosate herbicide is applied, it will be replenished depending on the situation within six hours of rain. Because of the rain, the spray of the medicament sprayed on the leaves of the plant can be washed.

Seven is related to the use of herbicides : for example, glyphosate can only be used as a stem and leaf treatment agent, not as a soil treatment agent. That is to say, the herbicidal method of glyphosate can only be used as a spray and can not be used as a medicinal agent. When blending the agent, it is not possible to use muddy water and high hardness well water. These are all important reasons for affecting the weeding effect.

Eight is the wind speed at the time of application, and whether the weeds have dew or not . The wind speed can change the target direction of the drop, causing the weeds to be unmedicated, so the weeds cannot die. In addition, the dew on the weeds is not dried when applied, which can effectively reduce the application concentration of the herbicide, so the effect of the imitation is also poor. Warm reminder: The medication guide table is for reference only, the actual situation is subject to the actual!! We respect originality and also pay attention to sharing. Copyright original author, if infringement of your rights, please contact us in time, we will delete the first time.

(Source: Agricultural Resources Consulting Network)

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