After the corn seedlings are sprayed, the herbicide will rain and the pesticide will do great harm to the crops.
It rains immediately after the herbicide is applied to the corn, and the effect of the herbicide sprayed may be weakened, but the effect also depends on the time of spraying and spraying. At present, most herbicides basically belong to internal absorption herbicides, and the absorption time is very short. After 2-3 hours, most of the herbicides sprayed can be absorbed. In this way, there will be drug damage if the herbicide is sprayed again.
Herbicides can not be abused, even if the drug instructions introduce the effect of low toxicity, but the so-called "three-part poison". In the case of repeated spraying of pesticides and herbicides, it may also lead to drug damage and even death in serious cases.
On the other hand, the rain after spraying herbicides will also flow the herbicides sprayed on the leaves into the soil. Some netizens may say that whether the herbicides entering the soil can be effective or not should be discounted. Although herbicides are internally inhaled herbicides, some of the drugs flowed into the soil by Rain Water can be absorbed if the roots can reach them, but the parts of the roots that have not yet been touched cannot exert their effects. In this way, it will be a question mark how much it can be used in the end.
When you say, don't rush to spray pesticides again, slow down, wait and see, continue to observe, and if you see that the weeds in the field have died, and the effect is good, stop spraying herbicides. Of course, if the weeds in the field are completely ineffective, it is not too late to consider spraying herbicides.
After all, it will take some time for herbicides to be effective. If the efficacy is still good after rain, the broad-leaf weeds and sharp-leaf weeds in the field will gradually wither and die in a week or so, but if you do not see the withered and yellow situation, then consider the problem of medication.
Here is science to promote agriculture, welcome to follow, take you to grow knowledge.
- Prev
From cultivation to conservation, all-round popularization of science and technology
Culture green radish, as the name suggests, that is, planting green radish with hydroponic method, this seemingly simple method of cultivating green radish, recently there are a lot of "radish powder" said "not good", most of the feedback pictures are yellow leaves or soft roots...
- Next
It is very harmful if garlic bolts are not picked in time during the picking season.
Now is the time to pick garlic bolts, garlic farmers are busy for garlic bolts. The time requirement for picking garlic bolts is very strict. If the best time is missed, it will easily lead to the aging of garlic bolts, poor taste and affect the sales of garlic bolts. The picking of garlic stalks.
Related
- Wuhan Hospital Iron Tree Blooming Result Was Instantly Frightened by the Gardener Master
- Which variety of camellia is the most fragrant and best? Which one do you like best?
- What is the small blue coat, the breeding methods and matters needing attention of the succulent plant
- Dormancy time and maintenance management of succulent plants during dormancy
- Minas succulent how to raise, Minas succulent plant pictures
- What are the varieties of winter succulent plants
- How to raise succulent plants in twelve rolls? let's take a look at some experience of breeding twelve rolls.
- Attention should be paid to water control for succulent plants during dormant period (winter and summer)
- Watering experience of twelve rolls of succulent plants
- Techniques for fertilizing succulent plants. An article will let you know how to fertilize succulent plants.