Recently, with the outbreak of red spiders everywhere, the control methods, drugs of red spiders... All kinds of people who teach technology and sell agricultural materials have jumped out.
Some people are willing to teach everyone to solve it is always good, but yes, many of them are indiscriminate, casually find a photo to say that it is a red spider, not to say that it is harmful, but it is also easy to mislead people and make others question their professionalism.
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In the above picture, there are three companies that are a bit famous in China, some pictures have been changed, and some pictures have not been changed for more than a year...
As for who these three families are Xiao Ji, I don't have much to say, I understand it naturally, and today Xiao Ji is not here to dismantle them, cut to the theme - everyone actually doesn't know too much about the red spider!
This lack of understanding is not only in appearance, but also in the use of medicine and treatment, if I say - "red spiders do not need to kill the light", do you come back to refute me?
Speaking of red spiders, anyone who has planted the ground or planted some flowers and plants will hate this "pest" to the bone.
Xiao Ji has done a survey before, and the comments can see everyone's resentment, and you can also see that everyone has been fighting with the red spider for many years.
There are some folk remedies above, which are for reference only. Without trials, Koki is not recommended for large-scale use! It is not recommended for large-scale use! It is not recommended for large-scale use! Remember to remember!
Don't pull too much, who will be red spiders. If you must give the red spider a key word, it must be - difficult to kill.
No matter what medicine is used, no matter how to prevent it, this little bug is always "spring breeze blowing and growing again", but if there is an old man in the house who has passed the ground, go and ask, you will find that the red spider decades ago was not a problem at all.
Why? Is it because previous medicines or home remedies are more effective? In fact, it is not that the weapons have become blunted, but that the enemy army has become less...
In the past, red spiders did not have a good life, every day to survive under the siege of natural enemies such as ladybirds, polychaetes, small scratch bugs, etc., and after the promotion of pesticides, copper preparations, organophosphorus, and permethrin insecticides protected crops while also killing the natural enemies of red spiders.
"The tiger is not at home, the monkey is called the king", and without "discipline", the red spider is out of control.
We usually say that sows will give birth, but compared with the red spider, it is really a small witch.
How strong is the Red Spider? As long as the environment is suitable, they can breed 18-30 generations a year, which means that we curse people for "eighteen generations of ancestors, and it is one year for red spiders."
Of course, there is another point that red spiders are inferior to sows, that is, red spiders do not need to reproduce from both sexes, even if there is no "husband" can lay eggs and hatch (but can only produce males, must be bisexual to produce females).
In general, in order to survive, red spiders have developed the ability to lay eggs without a problem and lay 30-60 eggs at a time, which is why red spiders are prone to outbreaks.
It doesn't matter if it will be born, aphids will also give birth, and the effect of medication can be much better than that of red spiders. So what is so special about the red spider?
1, the red spider is not a spider, not an insect
Why does the spray not work? The main reason is that the red spider is not the same as the pest, it is not an insect but a mite, so the professional point will call the red spider "pest mite" instead of "pest".
In the photo of Xiao Ji in the front, those people just mistook the red spider for a red spider, but, again, the red spider is a mite and not a spider!
Because the types are different, the drugs used will be different, just like cockroaches and rats are not the same species, the drugs used must be distinguished, and in the face of "pest mites", you can only use mites.
2, acaricides are also distinguished
That is estimated that another friend will ask, why did he obviously use a mite, but the red spider did not become less...
In general, red spiders have an egg stage, a juvenile mite stage, a mite stage (some books will also divide the mite stage into a pre-mite stage and a post-mite stage) and an adult mite stage, because of the strong reproductive ability of red spiders, there will often be several periods of red spiders coexisting on a leaf.
The problem lies in this, now there is no single medicine that can kill several periods of red spiders at the same time. Sometimes a handful of medicine may kill the mites, but the eggs are still there, and they can continue to produce new red spiders.
This is also why many experts recommend mixing potions, just to be able to kill red spiders in all aspects, without leaving them with a chance.
3. Repeated medication is harmful
Test data show that the resistance of red spiders to pyridoxine is now 25 times higher than at the beginning, and the effect of avermectin is also greatly reduced, the reason for this is that many farmers repeat the drug.
As mentioned earlier, red spiders reproduce quickly, and if a class of drugs is repeatedly used, it is easy to strengthen the resistance of red spiders. Some people think that the quality of the drug has declined, but the real reason is that the red spider has increased resistance to the drug.
So, how to deal with the red spider?
1, with the right time can do more with less
Now many of us are hindsight, waiting for things to happen, waiting for the red spider to break out, we will think of using medicine to kill mites, but this effect is often very bad (to use a lot of drugs to kill red spiders at all stages).
If you want to control the red spider must grasp the time, generally speaking, March and September are the time when the red spider begins to be active, and when to spray depends on the number of red spiders:
In the spring, 1-2 heads can be seen on each leaf to spray;
May-June, September-October found that each leaf has more than 5 red spiders can start spraying.
2, so what medicine is good?
Red spiders need to use different drugs at different stages, so be sure to do a good job of mixing, and must avoid repeated drug resistance!
Recommendations for different periods of medication:
The fruit can be expanded to the fruit picking stage with biphenylhydrazide ethymezole suspension, or spironite suspension + avermectin emulsion;
Qingyuan can use mineral oil + avermectin;
Avermectin + ethanazole suspension can be used at the initial flowering stage;
From the flowering stage to the physiological fruit drop stage, avermectin + spironyl ester suspension agent can be used;
During the summer period, it is possible to use triazole tinethyl mitezole suspension + avermectin emulsion (at temperatures not higher than 32 degrees, sprayed in the afternoon).
Again, the above is only recommended one of the drug methods, if the local red spider is highly resistant to a certain drug, try to use less.
And be sure to rotate the medication to avoid drug resistance with only this one kind of dispensing!
The spray must be penetrated, and the red spider must remember to hit the back of the carbine every 5-7 days, two or three rounds in a row, so as to avoid the hatching of the eggs and cause a new round of outbreaks.
3, always want to kill the red spider? You're wrong
Because the suffering of the red spider is too much, everyone will think of killing all the red spiders in one breath, in fact, it is not necessary. Under normal circumstances, as long as the number of red spiders does not erupt, they can be controlled by predators.
What's more, we can also reduce the number of red spiders using some non-pesticide methods:
Culture predator mites to control red spiders, relatively slow, suitable for use before outbreaks, and to control the amount of pesticides;
Adopt the raw grass method to make the ecology richer and reduce the harm of red spiders;
In addition, the red spider also has some folk remedies (you can look at a screenshot in front), some people feedback the effect is good, interested can be a small area of experiments to see, effective and then large area of use.
Here to remind everyone, there are some fat on the market known as "three minutes to kill the red spider" (click here to view the previous article), be careful! Be careful! Be careful!
In short, although the red spider is very annoying, but mastering the rules can help you solve many problems! The above, I hope to help you, like to remember to pay attention to Xiao Ji Ha ~ ~
Do you know any tricks to kill red spiders?
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