Spring drought is easy to break out!

For many of us, Starscream is like a nightmare, and if you are not careful, it will flood at an extremely fast rate
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The weather of this spring is also very suitable for the occurrence of red spiders-the high temperature comes early, and the rain falls less
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As people put on their summer clothes early, Starscream was also multiplying rapidly
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During the spring drought, it is most suitable for the outbreak of red spiders
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The more "killed" the more red spiders, if the citrus is to have a list of diseases and insect pests, the red spiders must be among the best, because this little thing can be more harmful! From the leaves to the fruit, they will be "gnawed" into dense white spots, which directly affects photosynthesis, and seriously leads to deciduous leaves and fruit, affecting yield and quality.
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? Many fruit growers are now a little overly afraid of spiders, see With a little bit of "clue", he will spray medicine quickly, trying to completely wipe out Starscream! As a result, the frequency of medication has increased, but the effect of medication has decreased
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Starscream fed by pesticides has always been the first reaction we saw Starscream is to "use medicine quickly", but in fact this concept is wrong.
At present, most of the orchards are "fed" by pesticides.
big! First of all, pesticides cannot "kill all" red spiders.
At present, even with the best pesticides, the rate of killing red spiders cannot reach 100%
.
Red spiders can reproduce 12-30 generations a year.
Eggs, larvae, and adults exist at the same time, and it is difficult to kill them at the same time.
In addition, red spiders develop resistance to drugs quickly, so it is difficult to kill them
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Secondly, it is pesticides that provide space for Starscream.
Why? Because pesticides will eliminate the natural enemies of Starscream, without the checks and balances of natural enemies, all Starscream has to do is to reproduce with peace of mind! For example, copper preparations have eliminated polychaete, and broad-spectrum insecticides have eliminated predatory mites, ladybugs and other beneficial insects, and indirectly helped red spiders create a safe orchard environment
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? Copper preparations stimulate red spiders to break out.
In fact, red spiders are at the bottom of the food chain in the natural environment.
Predator mites, ladybugs, ants, etc.
can all be its natural enemies.
There was no red spider infestation before, not because of recent years.
There are red spiders, but the use of pesticides in recent years has provided them with a relatively suitable living environment
.
In this way, we did bad things with kind intentions, and wanted to eliminate pests, but step by step contributed to the outbreak of Starscream! The outbreak period is here! Be careful with medication! During the year, March-April and September-October are the peak periods for the prevention and control of spider mites.
If this time is well spent, the chance of spider mites outbreak will be greatly reduced! ? So how to use the medicine? First of all, you must use insecticide + ovocide to last longer than 10 days
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As we said earlier, red spiders reproduce very fast, and during peak periods there may even be several generations of a leaf in the same house.
Among them, eggs, nymphs and adults must be together
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Therefore, if you want to fight Starscream, you must use drugs for each state.
Only the baby and parents can grab the best prevention and control effect
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Recommended for killing spider mites: Lime sulfur mixture, mineral oil, monoformamidine, bisformamidine, cormite, propargyl, triazotin, fenbutatin, pyridaben, fenpyroximate, hethiazox, and amethyst Vermectin, spirodiclofen, etoxazole, bromoxyfen, tetrafenoxazin, butaflufen, fenazaquin, bifenazid, mancozeb, propsenzine, fenpropathrin, triazole Phosphorus, flufenoxuron, lufenuron, diafenthiuron, tebufenuron, pyridaben, etc; Ketone, fenazafen, spirodiclofen, fenpyroximate, etc.
? Medication index: when there are more than 2-3 red spiders/leaf, you can start the medication.
It is recommended to alternate each medication to avoid excessive use of one medication.
Caused spider mites to develop drug resistance
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There are also ways to deal with spider mites without using medicines except for pesticides.
In fact, more people have begun to control spider mites by cultivating their natural enemies and using biological means
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Here are a few points to pay attention to: Growing grass in the orchard is beneficial to the cultivation of natural enemies of spider mites.
When weeding, it is recommended that you only clear the grass on the tree tray, and you should leave and grow grass appropriately between the rows.
Colleagues with diverse ecology in the orchard also gave the spider mites a place to inhabit; the release of predatory mites in March-June and September-October is the best; it is not possible to use broad-spectrum killing about 40-50 days after the release of predatory mites Acaricides, it is recommended to use pesticides that are harmless to natural enemies, such as spirodiclofen, bifenazin, ethenoxafen, etoxazole, tetramazine, flumiazine and other pesticides
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? Who is the predator? In short, Starscream is not terrible, as long as you use the right method when planting and control the number, you will find that Starscream is not terrible at all!