The solution of the herbicide ineffective-Iota

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News > Dynamic industry > The solution of the herbicide ineffective

The solution of the herbicide ineffective

The effect of herbicide used in field is not good, and there is a problem with pesticide. After the investigation, most of the reasons were caused by improper use.. There are many factors that affect the effect of the herbicide, even the same variety of herbicides in different environment or different operation, the effect of weeding is also very different.

The cause of the effect of the drug effect.:

(1) the temperature. Herbicides play and phytotoxicity produce has great relationship with temperature. Smoke sulfometuronmethyl, mesotrione etc. under the condition of lower temperature, slow effect or poor effect. But under the condition of high temperature and easy to produce injury.The evening before and after spraying for the relative safety of crop.

(2) weather conditions. Under drought condition efficacy often play is not good; after spraying, soil humidity effect play better; windy weather application. Pesticide drift, the effect is not good and drift to on other crops produced phytotoxicity.

(3) soil conditions. The impact of the closed herbicides, especially the application of soil treatment agent, the organic content is high, the liquid can easily be adsorbed by the soil, need to increase the dosage. The content of organic matter in low sand, easy leakage, leaching, membrane formation is not good, closed weeding effect is poor.

(4) soil moisture. The moisture is good, the liquid is adsorbed by the soil, weed is conducive to absorption, good efficacy. Under the drought conditions, the effective components of the herbicide were absorbed and fixed by soil, and were not easily absorbed by weeds. The effect of the herbicide was not good..

(5) using the method. The effects of water consumption, spray uniformity, leakage injection, heavy injection, and surfactant addition were significantly affected by the efficacy of the drug..

(6) weed influence. The time of grass age is small, the drug resistance is bad, the effect is good, and the time of grass is old, the resistance of the herb is increased, the efficacy is bad.. In case of drought weeds do not germinate, has been unearthed in the weeds at the little, but grass age slants big, especially wettable powder products, poor absorption, spray the liquid quickly dry, powder shedding, ineffective.

Solution:

(1) soil sealant. Irrigated after or after rain, the soil moisture is good medicine, application dosage according to the instructions, do not arbitrarily increase or decrease, spray it evenly on the surface of the soil form pellicles, increased herbicidal effect.

(2) seedling post-treatment agent. As far as possible in irrigated and rain spraying weeds in growth, stomatal opening, to absorb the liquid; and vigorous plant growth, liquid fast in vivo transduction.The effect of the medicine is good and the weeding effect is good.. Drought is certain to increase water use per mu water of not less than 30 kg, uniform spray, wet penetration weed stems and leaves to help absorption and conduction. The best use of the weed 2-5 leaf stage, the grass age is small, the weeding effect is better. Can be added in liquid medicine, such as silicone additives surfactants, increase the extension of the leaves of the humidity, and promote liquid absorption, improve the weeding effect.

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