How to improve the effect of corn herbicide

Corn herbicides have been used for many years, but every year there is a loss of unnecessary damage due to improper medication. Understand the weeds in the field, use the medicines in a targeted manner, and master the dosage and time and soil moisture to achieve the desired herbicidal effect.

 

Put the medicine on the grass. Herbicide selection should be determined according to weed species and time, in order to crabgrass, goosegrass, Li, amaranth, smartweed mainly corn field, the choice of 40% or 41% Atrazine B Yu Terbutryn 150 200 ml, etc., used in the pre-emergence of corn after sowing, no later than the weed 2 leaf stage; can also choose 4% Yu Nong Le 60 ml or 2.25% Kang Shi it 100-120 ml, in weed 3-5 For leaf period use; for corn fields with large grass, the ground should be sprayed with 20% paraquat or 41% Roundup 80-100 ml / mu immediately after sowing .

 

Strictly control the amount of medication. At present, there are many types of herbicides in corn fields. When using them, the dosage should be strictly controlled. It should not be too large or too small. It should not only affect the weeding effect, but also affect the growth of corn and squat crops.

 

Increase the amount of liquid medicine. Generally, the amount of liquid used per acre is 30-40 kg, and the ground should be moistened after spraying.

 

In case of drought, the water should be used first after watering. In the dry year, it is necessary to spray the water after watering first, and to moisten the ground when spraying, so as to facilitate the formation of a film on the ground.

 

Timely medication. According to the appropriate period of use of the herbicide used, the time of administration should be reasonably determined to prevent the spraying from being too late and affecting the efficacy.

 

Apply the medicine correctly. First of all herbicides should be turned into the mother liquor, after suspending use should be fully shake, spraying should go down for good spraying, spraying time should have carried out in calm weather before 9:00 am and after 5:00 pm Do not spray before noon and in high winds and high temperatures. Do a uniform spray, do not re-spray, do not leak spray, to ensure the effect of spraying.

Source of information: Jilin Rural Newspaper

 

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