Recently, readers of Song Yongxin, Songdeng Town, Wendeng City, have telephone consultation: He heard that weeding with herbicides and herbicides is effective, but it was not ideal for weed control in orchards last year. When spraying should pay attention? The reporter consulted the direct sales department manager and agronomist Wang Changqiang of Shandong Academy of Agricultural Sciences on this issue.
According to the manager Wang analysis, the weeding effect is not ideal, and it is likely to be the method of application and concentration.
Manager Wang said that the new herbicide—farmers Le 74.7% water-soluble granules—has excellent control effects on various annual and perennial grasses, sedges, and broadleaf weeds (Reed). However, the application requirements are more stringent and the following points should be mastered:
First, in addition to curing the farmers after the fun spray is absorbed by the green stems and leaves of weeds and other parts of the conduction. Therefore, weeds must have a certain area for drug application when spraying, which will facilitate the better absorption of the drug solution. The drug receiving area is small and it is difficult to exert its efficacy. The best spraying period should be in the bud-flowering stage of weeds, that is, the period of maximum weed growth, annual 3-4 leaves of weeds, plant height 5-10 cm; perennial 6-8 leaves of perennial weeds, plant height Spraying at 20-40 cm, the best effect.
Second, the selective weeding method
1, height difference choice: Orchard, mulberry and other economic forests and wasteland weeding, for wasteland weeding, can increase the dose 2-3 times, 150 ml per acre is appropriate. We can use the height difference between weeds and protected plants to lower the spray head and spray it. 2, directional spray selection: Orchard, mulberry and other economic forests and cotton, corn, sugar cane, etc. in addition to the treatment of inter-row weeds, can wear a protective cover on the nozzle, spray nozzles, directional spray, to avoid the liquid sprayed on the protected plant on. 3. Protective spray selection: After the transplanting of seedlings and saplings of tobacco, vegetables and other crops, the seedlings may be shielded and sprayed after being transplanted by means of utensils, plastic covers, covers, and blocks. 3. Farmers do not have the residual activity of soil closure and cannot prevent the germination of weed seeds. Therefore, the weeds unearthed after application should continue to be treated.
Third, pay attention to matters
1. Farmers are happy to eliminate the herbicide. Therefore, when the pesticide is sprayed, the liquid should be prevented from drifting to the non-target plants, causing phytotoxicity. 2. After being absorbed by plants, the farmer's music is transmitted to any part of the plant body, including roots buried deep in the soil. At the same time, because the music of the farmer is mainly to inhibit protein synthesis, the plant will die due to lack of protein. Therefore, the drug effect will be slow, and the weeds will die after about 15 days after spraying. 3, spraying should be selected at high temperatures, dry, no wind, sunny weather, 10:00 am to 4:00 pm is appropriate. If rain occurs 4 hours after application, the efficacy will be reduced, and the spray should be properly applied. 4, due to farmers Le easy to lose their activity with calcium, magnesium, aluminum and other ions. Clean soft water should be used for the production of liquids, which will reduce the efficacy of the water into the mud or dirty water. 5. Do not cut grass, grazing or arable land within 3 days of application to facilitate the absorption and conduction of liquid medicine. 6, farmers have music has advanced additives, sprayed without the need to add oil or detergent and other additives. 7. When spraying, avoid contact with the eyes, skin, and clothing. Inadvertently contact with a large amount of water to wash away. When serious, seek medical advice. After using the residual liquid or washing spray water can not pour into the pond or water.
According to the manager Wang analysis, the weeding effect is not ideal, and it is likely to be the method of application and concentration.
Manager Wang said that the new herbicide—farmers Le 74.7% water-soluble granules—has excellent control effects on various annual and perennial grasses, sedges, and broadleaf weeds (Reed). However, the application requirements are more stringent and the following points should be mastered:
First, in addition to curing the farmers after the fun spray is absorbed by the green stems and leaves of weeds and other parts of the conduction. Therefore, weeds must have a certain area for drug application when spraying, which will facilitate the better absorption of the drug solution. The drug receiving area is small and it is difficult to exert its efficacy. The best spraying period should be in the bud-flowering stage of weeds, that is, the period of maximum weed growth, annual 3-4 leaves of weeds, plant height 5-10 cm; perennial 6-8 leaves of perennial weeds, plant height Spraying at 20-40 cm, the best effect.
Second, the selective weeding method
1, height difference choice: Orchard, mulberry and other economic forests and wasteland weeding, for wasteland weeding, can increase the dose 2-3 times, 150 ml per acre is appropriate. We can use the height difference between weeds and protected plants to lower the spray head and spray it. 2, directional spray selection: Orchard, mulberry and other economic forests and cotton, corn, sugar cane, etc. in addition to the treatment of inter-row weeds, can wear a protective cover on the nozzle, spray nozzles, directional spray, to avoid the liquid sprayed on the protected plant on. 3. Protective spray selection: After the transplanting of seedlings and saplings of tobacco, vegetables and other crops, the seedlings may be shielded and sprayed after being transplanted by means of utensils, plastic covers, covers, and blocks. 3. Farmers do not have the residual activity of soil closure and cannot prevent the germination of weed seeds. Therefore, the weeds unearthed after application should continue to be treated.
Third, pay attention to matters
1. Farmers are happy to eliminate the herbicide. Therefore, when the pesticide is sprayed, the liquid should be prevented from drifting to the non-target plants, causing phytotoxicity. 2. After being absorbed by plants, the farmer's music is transmitted to any part of the plant body, including roots buried deep in the soil. At the same time, because the music of the farmer is mainly to inhibit protein synthesis, the plant will die due to lack of protein. Therefore, the drug effect will be slow, and the weeds will die after about 15 days after spraying. 3, spraying should be selected at high temperatures, dry, no wind, sunny weather, 10:00 am to 4:00 pm is appropriate. If rain occurs 4 hours after application, the efficacy will be reduced, and the spray should be properly applied. 4, due to farmers Le easy to lose their activity with calcium, magnesium, aluminum and other ions. Clean soft water should be used for the production of liquids, which will reduce the efficacy of the water into the mud or dirty water. 5. Do not cut grass, grazing or arable land within 3 days of application to facilitate the absorption and conduction of liquid medicine. 6, farmers have music has advanced additives, sprayed without the need to add oil or detergent and other additives. 7. When spraying, avoid contact with the eyes, skin, and clothing. Inadvertently contact with a large amount of water to wash away. When serious, seek medical advice. After using the residual liquid or washing spray water can not pour into the pond or water.
Vitamins are organic compounds and vital nutrients that an organism requires in limited amounts. An organic chemical compound (or related set of compounds) is called a vitamin when the organism cannot synthesize the compound in sufficient quantities, and it must be obtained through the diet.
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