Reed grass, goosegrass, and white grass are common malignant weeds in crop fields, especially reed grass and white grass. The underground stems are very developed, and it is difficult to kill them with ordinary herbicides, making them the most difficult to eradicate malignant weeds. Today, I will introduce to you a small formula for controlling malignant weeds such as reeds, goosegrass, and white grass, which can completely eradicate these malignant weeds. Weeding is thorough and clean.
Occurrence characteristics of reed grass
Reed grass is a perennial grass weed that can grow both aquatic and xerophytic. It grows widely in ponds, ditches, and various crop fields, and has very developed underground stems. It mainly reproduces by underground stems, is heat-resistant but not cold-resistant, so it becomes the main field weed in summer and autumn. Due to its strong underground stem reproduction ability and strong drug resistance, it becomes one of the most difficult malignant weeds to eradicate in crop fields.
Occurrence characteristics of Imperata cylindrica
Imperata cylindrica, commonly known as Imperata cylindrica root, is a perennial grass weed that mainly grows on roadsides, hillsides, ditches, grasslands and crop fields. It mainly reproduces by underground rhizomes. After the roots are dried in the air, they can still survive when buried in the soil. It is extremely labor-intensive to eradicate, and it is a stubborn weed.
Choice of herbicides
Reed grass and Imperata cylindrica are both perennial malignant weeds. Manual eradication is not only labor-intensive, but also has unsatisfactory weed control effects and is difficult to completely eradicate. Chemical weed control has the advantages of high efficiency, good effect, and thorough weed control. It is currently widely used in production. Experiments have shown that glyphosate + high-efficiency flupyralid has a good control effect on reed grass and Imperata cylindrica.
Glyphosate is also a lethal herbicide with good systemic conductivity. It can transmit the liquid medicine to the roots through the stems and leaves, killing the roots together. The compounding of glufosinate and glyphosate in a certain proportion has obvious synergistic effect, overcomes their respective shortcomings, has a wider weed control range, kills weeds more quickly and thoroughly, and the price can be greatly reduced.
Glyphosate + high-efficiency flupyrazole has good systemic conductivity. After being absorbed by the stems and leaves, the medicine can be transmitted from the stems and leaves to various parts of the underground rhizomes, and can kill the above-ground stems and leaves and underground rhizomes at the same time. At the same time, it can also treat wild oats, bluegrass, foxtail grass, bermudagrass, cyperus rotundus and other malignant weeds. The effective period can reach more than 60 days, greatly reducing the input of labor.
Glyphosate liquid must be transmitted to the underground rhizomes of weeds in large quantities to achieve a weed control effect. This requires that the weeds have more leaves. If the weed area is small and photosynthesis is not strong before use, the nutrients stored in the roots are conducted from bottom to top. At this time, the amount of liquid input to the roots is very small, and the weed killing effect is not achieved; in the middle and late stages of weed growth, photosynthesis is strong, and photosynthetic products are conducted from top to bottom. At this time, the effect of the drug is best. Therefore, the most important thing about using glyphosate is to select the best time to use the drug.
Usage
During the vigorous growth period of reed grass, goose grass, and white grass, use 30% glyphosate ammonium salt solution 300-500 ml + 10.8% high-efficiency flupyralid emulsifiable concentrate 30-45 ml/mu, add 30-50 kg of water and spray evenly, which can completely kill reed grass, goose grass, and white grass within 10-15 days, and can also treat wild oats, bluegrass, bermudagrass, foxtail grass and other weeds.
