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What are the main herbicides used in wheat fields? Detailed guide to their application methods
Main herbicides for wheat fields and their application methods
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When is the best time to apply wheat herbicide?
Weeds in wheat fields show their first and largest emergence peak 15-20 days after wheat is sown, and some weeds may show another small emergence peak in March of the following year. Through extensive experimental observation, there are 3 key periods for weed control in wheat fields. 1. Before wheat emergence after sowing is an important period for controlling weeds in wheat fields...
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Timely application of regulators to wheat boosts stress resistance and yield
1. Paclobutrazol. At the wheat jointing stage; spray 50 kg of a 200 ppm paclobutrazol solution per mu, which can dwarf the plants, enhance lodging resistance and drought resistance. It can also control powdery mildew and improve the plant's absorption and utilization of nitrogen. 2. Chlormequat. For wheat fields with large populations and vigorous growth, at the wheat jointing stage, use 40-50 kg of a 40-50 ppm solution made from 5% chlormequat aqueous solution per mu...
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Which herbicides can be used after wheat emerges?
Wheat and weeds differ in their sensitivity to herbicides at different stages, and the safety of herbicides to wheat also varies; the performance of various herbicides differs, so it is very important to correctly grasp the application timing, especially when applying herbicides from the jointing stage of wheat to the young ear differentiation stage, where even more attention should be paid to the safety of the herbicide to wheat. At present, ...
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What are the precautions for using herbicides in wheat fields?
What should be noted when using herbicides in wheat fields? How should it be done? Applying herbicides to wheat requires the following strict practices: Strictly select herbicide varieties. There are many types of herbicides, and each herbicide has a certain spectrum of weed control. Some herbicides have a very narrow weed control spectrum, such as barban, which can only control wild oats; MCPA controls shepherd's purse, purslane, and wild oats very well, but its effect on cleavers is very poor; 2,4-D is effective against broadleaf weeds such as amaranth, but ineffective against grass weeds. Farmers should choose the right herbicide according to the most common weed species in the wheat field in order to achieve the desired effect. To control broadleaf weeds, herbicides such as chucaojing, dicaojing, tribenuron-methyl, and baijia mixture can be selected for good control results; however, metsulfuron-methyl, chlorsulfuron, and maicaoer can only be used early in wheat fields under a rice-wheat rotation system. If crops such as cotton, corn, peanuts, or beans are planted after rice, serious phytotoxicity will occur, leading to frequent incidents of almost total crop failure.
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Methods for applying herbicides to wheat to prevent freeze-related herbicide injury
What herbicide is best for corn planting? Corn plants that preferably do not suffer herbicide injury are relatively sensitive to herbicides, so they should be chosen reasonably to avoid herbicide injury. For soil treatment, 40% atrazine-acetochlor aqueous suspension emulsion has high herbicidal activity, a long application period, and is safe for corn and subsequent crops. Before emergence after sowing or after emergence when weeds...
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Correct use of herbicides after wheat emerges
How should herbicides be used after wheat emerges? Please provide guidance. Summarize the experience of chemical weeding in wheat fields across different regions. Different chemical herbicides should be selected according to different wheat seedling conditions and wheat subsequent crops. The following herbicides can be selected: Maiji quizalofop-p-ethyl, namely 15% quizalofop-p-ethyl wettable powder, mainly controls various grass...
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Chemical Weed Control Methods and Technical Points for Winter Wheat Fields
How to chemically control weeds in winter wheat fields? Please guide. For chemical weed control in winter wheat fields, you can refer to the following methods: 1. Control agents: 3% Shima oil suspension concentrate (mesosulfuron-methyl); 3.6% Kuoshima water-dispersible granules (mesosulfuron-methyl + iodosulfuron-methyl-sodium). 2. Usage amount: Shima...
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Can acetochlor be used for weed control during the wheat seedling stage?
Can acetochlor be used on wheat seedlings? Please advise: acetochlor must not be applied to wheat seedlings. Wheat is fairly sensitive to acetochlor from just emerging until before the 2-leaf stage, and applying the herbicide at this time easily causes herbicide injury. In wheat fields, acetochlor should be applied after sowing but before emergence, or after the wheat reaches the 2-leaf 1-heart stage. After application, keeping the field moist gives a better sealing effect; note that the soil...
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