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Anonymous users2024-02-16Wheat in herbicides.
After about a week or so, you can fight the red spider.
Because the effect of the drug will be completely absorbed, it will be more scientific to target the red spider medicine.
The best time to apply wheat herbicides.
Soil moisture should also be well grasped: seize the opportunity of watering wheat field, apply pesticides in time to ensure the effectiveness of herbicidesMost herbicides require a certain amount of soil moisture, and soil moisture is most conducive to the exertion of herbicide efficacy when it is 40%-60%. The drought is severe, most wheat fields are dry, and herbicides should be used in a timely manner when used at this time in combination with the favorable timing after watering (or after rainfall).
Precautions for spraying herbicides in wheat:
The spraying time must be mastered before the wheat returns to green to jointing, and the average daily temperature is stable at more than 10 degrees.
Pay attention to weather changes before application, and when there is a strong cooling within 2 to 4 days before application, it is not suitable to use medicine.
Strictly grasp the dosage of medicine, can not increase or decrease at will, for some new herbicide varieties, must not be used blindly.
The best time to apply wheat herbicides.
When spraying, it should be uniform and thoughtful, so that there is no leakage and no respraying.
Choose the right type of herbicide based on the weed species in the field.
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Anonymous users2024-02-15It can be separated by a week, generally speaking, after the herbicide is applied, a week is enough to remove the weed, and then a week later to spray the drug to remove the red spider is very good.
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Anonymous users2024-02-14Summary. Chlorpyrifos is not effective in controlling spider mites. Spider mites wheat has entered the rejuvenation stage, which is beneficial to the occurrence of red spiders under the climate conditions of drought and little rainfall.
Poor control will cause yellow and white dots on wheat leaves, and after red spiders suck the nutrients in the leaves, the wheat will grow poorly, the development of plants will be stunted, and there will be dry and dead seedlings when it occurs. Therefore, if the weather is dry in the rejuvenation period, the monitoring should be strengthened, and if the number of mites in 33 cm reaches 200, or when there are 6 mites in each plant, pesticide control should be carried out in time. You can choose 18% avermectin EC, or 15% pyridafen EC, 40% dimethoate and other sprays.
In addition, wheat red spider has the habit of being frightened to the ground, which can be combined with wheat field watering to shake the insect body off, and use irrigation to stasis and drown it to reduce its occurrence.
Chlorpyrifos is not effective in controlling spider mites. Red spider wheat has entered the rejuvenation stage, which is beneficial to the occurrence of red spider and hail under the climatic conditions of dry burning, hunger, drought and little rainfall. Poor control will cause yellow and white dots on wheat leaves, and red spiders will suck the nutrients in the leaves after the skin is left, resulting in poor growth of wheat, stunted plant development, and dry and dead seedlings will occur when it occurs.
Therefore, if the weather is dry in the rejuvenation period, the monitoring should be strengthened, and if the number of mites in 33 cm reaches 200, or when there are 6 mites in each plant, pesticide control should be carried out in time. You can choose 18% avermectin EC, or 15% pyridafen EC, 40% dimethoate and other sprays. In addition, wheat red spider has the habit of being frightened to the ground, which can be combined with wheat field watering to shake the insect body off, and use irrigation to stasis and drown it to reduce its occurrence.
Hope it helps.
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Anonymous users2024-02-13Methyl cyanide phosphine can be used, usually 50 ml per mu is enough.
To control the peach heartworm, spray with 12% emulsifiable concentrate 1500 2100 times or 20% emulsifiable concentrate 3000 4000 times. To control apple tree red pure teasing spiders, spray with 20% emulsifiable concentrate 3000 4000 times or 25% emulsifiable concentrate 1000 1500 times. To control apple yellow aphid, spray with 20% emulsifiable concentrate 2000 3000 times or 25% emulsifiable concentrate 800 1200 times.
To control citrus red spiders, spray with 25% emulsifiable concentrate 1000 1500 times.
To control cabbage worms, mu, use 50 80 ml of 20% EC or 25% EC 25 50 ml or 50 80 ml of EC or 25% EC 25 50 ml or 30% EC 80 120 ml, 40 50 kg of water, spray.
Precautions for cyanide and phosphine
Methyl cyanophosine should not be mixed with alkaline pesticide substances. Methylcyanide thion is toxic to bees, fish and other aquatic organisms, silkworms, and should avoid the impact on the surrounding bee colony during the application period, and the flowering period of nectar source crops, silkworm chambers and mulberry orchards should be prohibited. Keep away from the aquaculture area for pesticide application, and it is forbidden to clean pesticide application equipment in water bodies such as rivers and ponds.
Pregnant women and breastfeeding women should avoid contact with this medicine.
When using this product, you should wear protective equipment and avoid inhaling the liquid. Do not eat or drink during the application period. Hands and face should be washed in time after application.
The prepared liquid medicine should not be stored for a long time, and should be used with the preparation. In the range of application concentration, the drug has a strong killing effect on the eggs, larvae and adults of the natural enemy of aphids, the seven-star ladybug, and should be paid attention to when using the drug. The safe interval for the use of phosphine on cotton is 14 days, with a maximum of 3 uses per season.
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