Radish, as a cruciferous vegetable, is usually sown directly in the form of high ridges or flat ridges in early autumn.
The growth period of radish after autumn is the most serious period of weed damage in the field. It is of great significance to do a good job in weed control in radish field to reduce the labor cost of production management and ensure the normal growth of radish.
What medicine can be used to seal weeds in radish fields?
It can be said that there are many herbicides suitable for mixed soil application before sowing.
If it can kill weeds such as green bristlegrass, barnyard grass, wild oats, cattail and amaranth.
Used for soil treatment after sowing and before emergence, trifluralin, diquat, prometryn, fenoxaprop-p-ethyl, lasso and tall can effectively control monocotyledonous weeds and some dicotyledonous weeds.
Usage, concentration and precautions of common herbicides;
1, trifluoling
Used for soil sealing before sowing and pre-seedling treatment after sowing. Generally, an effective amount of 48-60 grams or 65,438+000 ml-65,438+050 ml of 48% trifluoling EC and 50 kg of water are sprayed per mu.
After the application of trifluoling, the emergence rate of radish will be affected to some extent, and the sowing amount of radish can be appropriately increased to protect seedlings. After the application of trifluoling, the soil should be covered in time to prevent loss and decomposition, so as to ensure the efficacy.
2. diquat
The effective dosage of soil treatment after sowing and before emergence is 37.5-50g per mu. Or 100g ~ 200g 50% wettable powder with 50kg ~ 70kg water spray.
Cover the soil in time after spraying to improve the efficacy. It is best to establish soil moisture before spraying herbicides, and the amount of chemicals used in sandy soil is less than that in cohesive soil.
Green radish (figure)
3. metolachlor
58g ~ 72g effective amount per mu is used for soil treatment before sowing, or 72% metolachlor EC 100 ml is mixed with 50l water and sprayed on the ground. It has good control effect on annual gramineous weeds and some broad-leaved weeds.
4. Others
Such as herbicides, tebuconazole and acetochlor, can be used for soil sealing treatment before sowing. Prometryne, Oshap, Lasso, Shi Tian cloth, etc. It can be used for soil treatment after sowing and before sowing.