Corn Soil Sealing and Weeding, Stem and Leaf Weeding Techniques

The weed species in the corn fields in Jiyuan City include crabgrass, goosegrass, green foxtail, hibiscus, Lebanese and others. Due to the fast growth rate of weeds in the corn field and the large amount of growth, competition with corn, competition for fertilizer, and competition for space pose a serious threat to the growth of corn seedlings, and severe weed occurrence will reduce production by 20-50%. Soil closed chemical weed control is currently the best measure to control weeds in corn fields. One-time application of fertilizers before weeds are excavated can effectively control the weeds damage during the whole growth period of corn. If soil closure and weed control are not performed in time, post-emergence shoots can be selected. Leaf weeding technique.
First, the scientific selection of drugs Currently on the city's pesticide market, there are many types of herbicides used to seal the soil in corn fields. If they are not properly selected, they will not only cause a waste of human and financial resources, but also will not achieve the control effect. Through the trials, demonstrations and promotion of the Plant Protection Station in recent years, we recommend two safe and efficient herbicides to farmers: First, 48% Weeding Emulsion produced by Boai Huifeng Biochemical Pesticide Co., Ltd. and Jiangsu Xinyi Pesticide Factory Produced 40% Yufeng suspoemulsion (for soil closure). The second is the 19% tobacco produced by Boai Huifeng Biochemical Pesticide Co., Ltd. The eutectic suspension is sold under the name of Jade Agricultural (for stem and leaf treatment).
Second, the use of time before corn seeding after emergence or corn early postemergence (before weeds two leaf period), the safety of corn. Post-emergence shoot and leaf treatment Weeding in corn 3-5 leaf stage post-emergence, annual grass weed 1-3 leaf stage, annual broad-leaved weed 2-4 leaf stage is the best application period.
Third, the use of a dose of the average field acres with 40% Yufeng suspoemulsion 200-220 ml, or 48% weeding Wei Suantian 180-200 ml; on the machine to receive wheat stubble higher field, to increase the amount of medication and water consumption , Mu with 40% Yufeng suspoemulsion 300 ml or 48% weeding suspensory emulsion 250 ml. Post-emergence shoots and weeds are generally 80-100 g. If the density of weeds is too high, the age of grass is too large, and the environment is poor under drought, the dosage and the amount of water should be appropriately increased to ensure the efficacy.
Fourth, the use of methods to use soil closed weeding technology must be selected to water or rainfall after soil moisture is greater. The effect of controlling weeds in poor soil moisture condition is not ideal, so it is necessary to pour well “closed” water in advance under drought conditions, so that the field moisture is better and the pesticide application is easier. Before medicine is being blended, the medicine bottle is shaken evenly, and the amount of medicine used per acre is accurately measured. Then, a mother liquor is added to a container containing a part of water, and then poured into a sprayer according to the proportion. Generally, 40 to 50 kg of water is mixed in the mu and the mixture is stirred. After evenly spraying the surface of the soil evenly, a large-scale sprayer sprayer is recommended to spray it. Do not engage in agricultural activities within one week after spraying.
V. Precautions
1. Perform secondary dilutions.
2. Corn should not be used when it is just outcropping. It is also not suitable to use farmland or sandy soil.
3, spraying time before 10 o'clock in the morning or after 4 o'clock as well, to avoid spraying at high temperatures at noon.
4. Heavy rain shall be encountered within 24 hours after application and shall be promptly filled.
5. Spray the sprayer promptly after spraying.

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