As we all know, after wheat jointing, it is not suitable for spraying herbicides . Now it is the best time for spraying herbicides in the greening period of wheat. So what should be paid attention to when spraying wheat herbicides? Let's get started.
Choose a dosage form based on the type of weed:
1. The wheat field mainly based on the seedlings and the leek can be used with 72% 2,4-D butyl ester 50 ml/mu; or 10% fensulfuron 10 g/mu.
2. The wheat field dominated by Maijiagong and Miva cans can be used with 10% of bensulfuron-methyl or 10% of benzsulfuron-methyl.
3, the wheat field dominated by valerian and maiden may use 6.9% oxazolgrass water emulsion 60~90 ml/mu.
4, the wheat field dominated by buckwheat in the wheat greening period, you can choose 70% flufensulfuron 3.5 g / acre; or 15% acetylene oxalate wettable powder 20 ~ 30 g / acre.
5. 20% flufenoxyacetic acid 100 ml/mu can be used in the wheat field dominated by the field.
6. The wheat field dominated by valerian can use 72% 2,4-D butyl ester 50 ml/mu.
Application methods and recommendations: The above formula requires 30 kg of water per acre to use a hand sprayer or a sprayer spray. In combination with spring weeding, "one spray three prevention" is carried out; the weak wheat field is combined with chemical weeding and spraying potassium dihydrogen phosphate in the wheat greening stage, and 40 grams of potassium dihydrogen phosphate is used per mu. In order to combine the control measures of excessively large wheat fields, 40% paclobutrazol is used per mu. According to the grass species in the weeds in the field, the best agent and application time should be selected.
In addition, we must also pay attention to: choose no wind and sunny spray, to prevent the drops from drifting to sensitive pesticides nearby; it is forbidden to spray herbicides with motorized sprayers according to the type of weeds in the field, choose the application time, generally in weeds 2 ~4 leaf stage is the best; after the jointing of wheat, it is forbidden to use 72% 2,4-D butyl ester and paclobutrazol; the medicine after application should be thoroughly cleaned and cleaned; the application of pesticides should pay attention to protection and avoid poisoning of humans and animals.
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