When does weeding in wheat fields work best? These two times give the best wheat weeding effect

When does weeding in wheat fields work best? These two times give the best wheat weeding effect, don't miss it! Currently, wheat planting is underway in winter wheat growing areas. In a few days, the weeds in the wheat fields will slowly emerge. According to the medication habits of different regions, some farmers prefer to use drugs after the year, while others use herbicides before the year.

In recent days, many netizens have commented in the background, when is the most suitable application of wheat herbicides? In this regard, Xiaobian consulted the wheat plant protection experts and gave them a detailed introduction.

The wheat seedling stage (mid-late November) and the greening stage (late February to early March) are the best time to control weeds in wheat fields.

It is a good choice to control weeds in the wheat seedling stage (mid-late November). At this time, the weeds are relatively small in age, and the resistance to the drugs is relatively small. It is relatively easy to control, and the dosage is not too large. Remove the weeds.

The greening period (from late February to early March) is also the best time to control weeds. However, at this time, weeds are older and have stronger resistance. In the prevention and treatment, it is necessary to increase the dosage. In addition, the cost of medication is increased invisibly. At the same time, there is a bit of a downside that it is easy to cause phytotoxicity, although it is said that this period can also control weeds in wheat fields, but pay special attention when applying drugs.

I would also like to remind you that wheat weeding should pay attention to weather temperature and humidity. When using medicine, the average temperature should be higher than 6 degrees, and it is best from 10:00 am to 3:00 pm. If the soil is relatively dry, you should pay attention to increase The amount of water used, if there is water, will affect the efficacy of wheat herbicides.

Therefore, when applying wheat herbicides, it is necessary to seize the opportunity, consider in many ways, and timely use the medicine to lay the foundation for high yield of wheat.

Suitable herbicides and formulas

Herbicides selected for chemical weed control in wheat fields should be determined based on the main weed species and the herbicidal spectrum of the herbicide. When the weed species in the wheat field are in the same herbicide herbicide spectrum, a single herbicide can be used for control; when several weeds are mixed, such as the combination of dicotyledonous weeds and monocotyledonous weeds, several The herbicides are mixed and applied according to a certain ratio to expand the herbicidal spectrum and improve the herbicidal effect. In the following, several weeding formulations will be available for selection based on the type of weed community in Beijing wheat field.

â—† Wheat field dominated by broadleaf weeds such as wormwood, leeks, maijiagong, ion grass, yarrow, alfalfa, etc., 10% bensulfuron-methyl WP can be used, 10 g per acre, or 75% benzene. Sulfonated water dispersible granules, 1 gram per acre.

◆ Wheat field based on buckwheat, you can choose 70% flucarbazone (彪虎) water dispersion granules, 3-4 grams per acre.

â—† For wheat fields with bowls of flowers, use 20% flufenoxyacetic acid (to make it) emulsifiable concentrate, 50-70 ml per acre.

â—† To look at the wheat field dominated by Mai Niang and Valerian, use 10.8% oxazolyl (Puma) emulsifiable concentrate, 30-40 ml per acre, or 15% acetylene ester (maiji) wettable powder. 30-40 grams per acre.

â—† Wheat field mixed with brome and broadleaf weeds can be mixed with 70% fluzolsulfonate water dispersing granules 3-4 g + 10% bensulfuron-methyl WP 10 g per acre.

The above formula is 30-40 kg per acre, and is evenly sprayed by hand sprayer or sprayer.

Application requirements

Accurate medication. The herbicide should be sprayed according to the recommended dosage. It is forbidden to increase or decrease the dosage arbitrarily to ensure the control effect and prevent the occurrence of phytotoxicity.

Use with the mix. When several herbicides are used in combination, the second dilution method should be adopted, that is, the herbicide is first dissolved in a small amount of water to form a mother liquid, and then the mother liquid is diluted to a prescribed amount of the liquid. The mixed liquid cannot be parked for a long time and must be applied in one time.

Choose the right climatic conditions to reduce drift and evaporation. In addition, most herbicides are positive temperature coefficient agents, and do not apply when the temperature is below 10 °C.

Do a good job in the maintenance of the application equipment. The drug should be maintained and maintained in time before application to prevent run, run, drip, and leakage during application, and achieve uniform application.

be careful. The pesticide application personnel should do a good job of safety protection. During the operation, smoking and diet should be prohibited to prevent poisoning accidents.

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