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(1) Orchard weeding: Glyphosate is generally absorbed and transmitted through the green tissue of the plant. It does not cause damage when it comes into contact with the brown part of the base of the young tree. Therefore, it is widely used in chemical weeding in orchards. Because various weeds have different sensitivity to glyphosate, the dosage is different. The annual weeds such as weeds, crabgrass, foxtail, goosegrass, maiden, medlar, sorghum, and swine fever The gardens of cockroaches and cockleburs are mainly used for 10% water agent 400-500 ml per acre; orchards with psyllium, small canopy and white wormwood, with 10% water agent 600-700 ml per mu. The orchard, which is mainly composed of thatch, bermuda, reed, thorn, cabbage, sedge, and leeches, is about 1000 ml per 10 mu of water. Generally, during the vigorous growth period of weeds, the water is 30-40 kg per mu, and the stems and leaves of the weeds are evenly sprayed. Be careful not to splash the liquid on the leaves to avoid phytotoxicity.
(2) Weeding of forest land: The tree species suitable for glyphosate in forestry include ash, eucalyptus, spruce, fir, and red pine. They are also used for young poplar forests, mainly for recreational land, barren hills, and wasteland afforestation. Exterminate grass before. Generally, the amount of weed control should be weeded according to the orchard, and the amount of shrub control should be increased to 1.5 to 3.0 kg per 10 mu of water. The annual weeds are used when the grass is 10 cm high, and the perennial weeds are mainly used when the grass grows 30 to 45 cm high. The shrub is used two months before the leaves.
(3) Farmland weeding:
1 Soybean has certain resistance to glyphosate. Spray with glyphosate stems and leaves to prevent soybean parasitic weeds - dodder. In the hazard period of the soybean stalks, the sprayed with 10% water agent 400--450 times, sprayed on the occurrence area, the amount of liquid used is generally based on the loss of the soybean leaf moisturizing liquid.
2 The use of special methods of application and the time difference between the crop and the weed seeds can make the glyphosate selective. For example, when the cotton is in the bud stage or the corn flare period, the spray can be sprayed between the rows. To prevent weeds in cotton fields or corn fields.
3 Some crops are too thick due to the seed coat, and the emergence time is longer after sowing. If weeds occur in large quantities, and it is not suitable for weeding and weeding, weeding with glyphosate before crop emergence.
4 Crop growth period with glyphosate stem spray or directional spray weeding must be cautious, can be carried out in a small area test, after a successful experience and then a large area of ​​application.
Huaxian Agricultural Technology Promotion Center Lu Shuguang
How to scientifically use glyphosate
Glyphosate is a broad-spectrum herbicide with strong endocrine conductivity. Widely used in orchards, woodland, leisure land and farmland weed control. Glyphosate has a protective effect on more than 40 families of plants, including monocotyledonous and dicotyledonous, annual and perennial, plants such as herbs and shrubs. Some plants of Leguminosae and Liliaceae have strong resistance to glyphosate. The dosage form is 10% water. The techniques used are as follows:
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