The long period of drug damage of meosulfuron

Methosulfuron herbicide is a kind of herbicide used in all kinds of wasteland, woodland, forest fire belt, airport, highway and so on. So how long is the drug damage period of meosulfuron?

I. the long period of drug damage of methosulfuron

The efficacy of meosulfuron can last for 3-6 months, but the residual effect can last as long as 1-2 years. It is often used in all kinds of wasteland, woodland, forest fire belt, airport, highway, railway and part of coniferous nursery to control all kinds of monocotyledon, dicotyledonous weeds and miscellaneous irrigation before and after budding.

II. Usage

The product can be used before and after budding, that is, it can be applied during the whole growth period from pre-germination to post-germination, and the best application period is when the weeds are about to germinate, when the weeds are high below 5cm after germination or when the weeds grow again after artificial weeding. The south is about February-April, and the north is about April-June.

Third, use dose

The amount of pesticide application should be determined according to soil type, plant species, seal degree and growth and development stage, and generally follow the following principles:

1. The weeds are small and the dosage is small.

two。 The amount of perennial weeds is 1-2 times higher than that of annual weeds.

3. The amount of miscellaneous shrubs is 2-4 times higher than that of general weeds.

4. The high content of organic matter and the increase of acidity should be increased appropriately.

5. The weed cover has a large measure. The general dosage of weeding is 5-50gl per 667m2, the amount of irrigation is 70-200g per 667m2, the amount of weeding is 5-8g per 667m2 in nursery and 5-10g per mu in orchard.

IV. Points for attention in use

1. Meosulfuron is sensitive to crops and is absolutely prohibited.

two。 The wind is sprayed in sunny weather below force 2 to avoid drift and drug damage to nearby crops

3. The effect of meosulfuron was slower than that of 6-8 hours after application. The weeds stop growing first, the stems and leaves change from green to purplish red, the end buds die, until the whole plant is dead, so do not re-spray or artificially weed because the effect is slow after application.

4. Methosulfuron is not safe to seedlings and some broad-leaved trees, so it must be kept away from sensitive tree species when used, and even some varieties of big trees up to several meters high may lead to the death of big trees.

5. After spraying, the spraying tools should not be cleaned in the river ditch reservoir so as not to pollute the agricultural water and cause drug damage to the crops.

The efficacy of meosulfuron lasts for a long time, and it is harmful, so we must pay attention to it and use it in accordance with the instructions.