Mechanism of action
Glufosinate is a phosphonic acid herbicide , a partially systemic, non-conductive contact herbicide. Unlike glyphosate root killing, glufosinate first kills leaves and can be transported in the xylem of plants through plant transpiration (the process of water being lost from the surface of living plants (mainly leaves) to the atmosphere in the form of water vapor) xylem It is the transport organization of vascular plants. It is responsible for transporting the water absorbed by the roots and the ions dissolved in the water for other organ tissues, and also supports the plant body. The xylem is composed of ducts, tracheids, wood fibers and wood parenchyma cells as well as wood rays. Inhibition of glutamine synthetase activity in plants causes glutamine synthesis to be blocked, nitrogen metabolism to be disordered, and ammonium ions to accumulate, thereby destroying plant cell membranes and preventing plant photosynthesis from dying. High temperature, high humidity and high light intensity enhance the absorption of glufosinate and significantly increase the activity.
Features
1. Glufosinate has strong penetrating ability and can prevent some glyphosate-resistant malignant weeds, such as goosegrass, small canopy, Zeeland, etc.
2. The quick-acting effect of glufosinate is better. Its quick-acting property is between paraquat and glyphosate, and it usually has a significant poisoning reaction in 3 days.
3. Glufosinate has a unique advantage in cash crops. This advantage stems from superior control over glyphosate and high safety. Glufosinate is not used on bananas or papayas even when it is hitting the xylem.
4. Glufosinate can be widely used in the inter-row spray of crops. Because it belongs to ammonium contact, as long as it is not sprayed directly onto the crop, it will not cause phytotoxicity. A small amount of floating liquid will only form spots on the contact point. Will not kill.
Control object
Used in orchards, vineyards, non-cultivated land, potato fields, etc. to control annual and perennial dicotyledonous and grassy weeds.
According to current data and data, many weeds are sensitive to glufosinate. These weeds include: goosegrass, bluegrass, sedge, berm, valerian, ryegrass, bentgrass, broken sedge, shaped sedge, crabgrass, wild licorice, fake stink grass, corn Grass, rough leaves, flowers, flying grass, wild leeks, looking Mai Niang, Alternanthera philoxeroides (revolution grass), luxuriant, small flying poncho, mother-in-law, purslane, four-armed grass, sable, snail , cellar, leeks, chicory, plantain, buttercup, gypsophila, senecio, etc.
Use technology
1. The dosage is guaranteed. The appropriate dose is selected according to the age of the grass. In principle, the concentration cannot be lower than 150 ml / 15 kg of water. In reproductive growth, perennial weeds should be increased to 200-280ml / 15kg water.
2. Effective dose, spray and spray. Effective stem and leaf contact is the premise of the efficacy of glufosinate. Spraying the whole plant weeds can fully exert the advantage of the contact of bovine ammonium and achieve the purpose of weed roots. Therefore, it is necessary to ensure that the amount of drug per unit area can be sprayed and sprayed. In principle, the amount of water used per acre of fruit trees is not less than 45kg of water, and the amount of water used for weeding between vegetables and corn is not less than 30kg.
3. Water quality requirements. Glufosinate was passivated in the soil and lost its activity. Therefore, the requirements for water quality should not be turbid, nor can it be sewage, waste water, stagnant water, muddy water, rainwater, etc. in daily production, and the water quality should be clear.
4. Weather and climate options. Rain within 6 hours will affect the absorption and exertion of the efficacy of the idle cattle; the low temperature, drought, and cloudy days will slow down; the windy weather and excessive dew will also affect the efficacy of the drug.
5. Try to choose the spray during the vigorous growth period after the weeds are out, and the multi-year-old weeds should increase the dosage.
6. Secondary dilution. The second dilution of the farmer's medicine (three plus water and three stirring) can fully exert its effect advantage.
More pesticide knowledge , please pay attention to China Pesticide Network
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