The spring wheat field weeding should highlight an "early" word. Spring weeding is an important period for weed control in wheat fields. Herbicides in spring wheat include tribenuron-methyl, fructose-mercury, and 2,4-D butyl ester. They can be applied from the turning green of wheat to the early stage of jointing, but generally during the turn of wheat. Apply before March 15th to avoid adverse effects on the crop. In particular, the sooner the 2,4-D butyl ester is administered, the safer it will be.
In the spring wheat field, weeding and herbicide should be treated according to the symptom. According to different kinds of weeds, herbicides should be selected to improve the weed control effect. At present, Huaixian County uses 75% tribenuron-methyl (70% tribenuron-methyl) as the main crop in wheat fields, including sowing wormwood, leeks, and rice-wattle weeds, etc., to spray 1 to 1.8 grams of water and 30 to 40 kg of water. Wheat field, wild oats, and bromegrass are the main crops of wheat fields with gramineous weeds. Mu shall be sprayed with 6.9% Fuma 60-70 ml or 3% Shima EC 25-30 ml for spraying 30-40 kg of water; Wild oats and other wheat fields mixed with monocotyledonous weeds and broad-leaved weeds can be added with 6.9% of the 6.9% humming cream in each mu of medicinal liquid used in DuPont Superstars. Both types of weeds can be controlled. For severe cases of swine fever, 20% of the plots were sprayed with 50-60 ml/mu of water and 30-40 kg/mo of water. 2,4-D butyl ester emulsifier is easy to produce phytotoxicity to the lower dicotyledonous cotton and other dicotyledonous crops. In particular, the lower locust crop is a plot of cotton that uses no 2,4-D butyl ester as the herbicide. The medical equipment that used 2,4-D butyl ester cream should also be washed repeatedly to avoid the occurrence of phytotoxicity when the dicotyledonous crop is used.
In the spring wheat field, weeding must strictly control the dosage, the dosage is too small to affect the weeding effect, and the excessive amount of drug used has strong residual side effects, and sometimes it also causes phytotoxicity to the crop. Generally, 72% of 2,4-D butyl ester emulsifiable concentrate has an application volume of 50 ml per mu; 75% Tribenuron-methyl Suspension (coverage) is 1 to 1.8 g/mu; 75% DuPont Superstar Suspension Concentrate per acre The dosage is 0.9-1.4 g; 6.9% of the dosage of Fuma is 60-70 ml/mu, 3% of the amount of Sima EC is 25-30 ml/mu, and 30-40 kg of water is sprayed. Do not arbitrarily reduce or increase the dose to avoid poor weeding or phytotoxicity.
The conditions for weeding in spring wheat fields are appropriate. The use of herbicides in wheat fields should be applied from 9 am to 4 pm in sunny, windy sunny days. High temperatures, light enough to enhance the ability of the grass to absorb liquid medicine, the wind easily cause liquid medicine drift, spraying uneven, causing damage to other crops (fruit and vegetable). The optimal application temperature of 2,4-D butyl ester cream should be controlled at 15°C or higher.
Spraying should be evenly applied. It is best to dilute the herbicide with a secondary dilution method. Mix the mother liquor first and then dilute it into a liquid solution. Spray it evenly. The amount of water used for the mu should be no less than 30 kg. .
In the spring wheat field, weeding and herbicide should be treated according to the symptom. According to different kinds of weeds, herbicides should be selected to improve the weed control effect. At present, Huaixian County uses 75% tribenuron-methyl (70% tribenuron-methyl) as the main crop in wheat fields, including sowing wormwood, leeks, and rice-wattle weeds, etc., to spray 1 to 1.8 grams of water and 30 to 40 kg of water. Wheat field, wild oats, and bromegrass are the main crops of wheat fields with gramineous weeds. Mu shall be sprayed with 6.9% Fuma 60-70 ml or 3% Shima EC 25-30 ml for spraying 30-40 kg of water; Wild oats and other wheat fields mixed with monocotyledonous weeds and broad-leaved weeds can be added with 6.9% of the 6.9% humming cream in each mu of medicinal liquid used in DuPont Superstars. Both types of weeds can be controlled. For severe cases of swine fever, 20% of the plots were sprayed with 50-60 ml/mu of water and 30-40 kg/mo of water. 2,4-D butyl ester emulsifier is easy to produce phytotoxicity to the lower dicotyledonous cotton and other dicotyledonous crops. In particular, the lower locust crop is a plot of cotton that uses no 2,4-D butyl ester as the herbicide. The medical equipment that used 2,4-D butyl ester cream should also be washed repeatedly to avoid the occurrence of phytotoxicity when the dicotyledonous crop is used.
In the spring wheat field, weeding must strictly control the dosage, the dosage is too small to affect the weeding effect, and the excessive amount of drug used has strong residual side effects, and sometimes it also causes phytotoxicity to the crop. Generally, 72% of 2,4-D butyl ester emulsifiable concentrate has an application volume of 50 ml per mu; 75% Tribenuron-methyl Suspension (coverage) is 1 to 1.8 g/mu; 75% DuPont Superstar Suspension Concentrate per acre The dosage is 0.9-1.4 g; 6.9% of the dosage of Fuma is 60-70 ml/mu, 3% of the amount of Sima EC is 25-30 ml/mu, and 30-40 kg of water is sprayed. Do not arbitrarily reduce or increase the dose to avoid poor weeding or phytotoxicity.
The conditions for weeding in spring wheat fields are appropriate. The use of herbicides in wheat fields should be applied from 9 am to 4 pm in sunny, windy sunny days. High temperatures, light enough to enhance the ability of the grass to absorb liquid medicine, the wind easily cause liquid medicine drift, spraying uneven, causing damage to other crops (fruit and vegetable). The optimal application temperature of 2,4-D butyl ester cream should be controlled at 15°C or higher.
Spraying should be evenly applied. It is best to dilute the herbicide with a secondary dilution method. Mix the mother liquor first and then dilute it into a liquid solution. Spray it evenly. The amount of water used for the mu should be no less than 30 kg. .
Ganoherb International Inc. , http://www.ganoherb.us