Red spider, also known as cotton red spider, in recent years, the damage of red spider is very extensive and difficult to control. If the prevention and treatment method is wrong, it may be more and more preventive. So how should Starscream prevent it?

Red spider's characteristics and weaknesses

1 small size: Red spider's body size is generally small, which also causes Starscream to be very good at lurking. Therefore, agricultural friends should check in time. After the spring, it will usher in the high incidence of spider mites, so we should check the leaf stalks in time. Red spiders tend to lay eggs in plant cracks, fallen leaves, and shallow soil around the roots. Once found, do it in time.

2 high-speed reproduction: Red Spider's reproductive ability and reproduction rate are very amazing. The new generation can be produced in the fastest 5 days. Therefore, once the agricultural friends have detected that the leaves have been infected, they should be dealt with in time, removed or even uprooted, and then away from the crop field. The purpose of this is to isolate the source of infection so that the red spider does not infect the surrounding healthy plants.

3 Transmission route: Except that the red spider itself will crawl accidentally, because of its small size, it is scraped away by the wind and spread to other healthy plants. It is also a major transmission route. Secondly, the rain will also allow the spider to take advantage of it. In addition, agricultural friends in the usual farming operations, the use of utensils may also be climbed by red spiders and then carried to other healthy plants.

4 Hi Wenxi drought: Practice has proved that the high temperature and dry environment is most suitable for the development and spawning of red spiders. If the surrounding environment is already hot and dry, and the ventilation is poor, it is a paradise for red spider breeding.

If you find red spider, you can spray the foliage and leaf back twice a day with a strong amount of water, which can change the likes of the red spider's dry environment. Second, use the powerful water spray leaf and leaf back red spider eggs. Rinse off.

Red spider control method

1. Red spider physical control

1 Clear weeds: Remove weeds in time and reduce the hidden points of red spiders to reduce the number of eggs.

2 Control environment: Because Starscream likes the living environment with high temperature and dryness, it is necessary to properly cool down and timely watering. Planting in greenhouses should be ventilated regularly.

3 increase natural enemies: there are many natural enemies of red spider, such as Chinese grasshopper, ladybug and so on. Appropriate increase in the number of natural enemies will help the organism to kill insects, green and healthy. But choose natural enemies, choose insects that do not conflict with crops, so as not to cause secondary damage.

2. Red spider chemical control method

The plants with red spiders are sprayed with chemical pesticides alone to ensure the elimination of the insect source and block the spread between it and other plants.

The effective agents are: butyl fluoride resin, biphenyl oxime ester, acetazol, thiazolone, spiro sterol ester, avermectin, ketone and the like.

Use 99% mineral oil 200 times plus 1.8% avermectin 2000 times, or 5% thiazolone 1500 times liquid spray, or add 43% biphenyl phthalate suspension 2000 times; 7 days control, continuous control 2 ~3 times, the effect of alternating multiple drugs is better.

Mineral source acaricides such as mineral oil are preferred as much as possible. Mineral oil is relatively easy to toxic, and should be cautious in high temperature, drought, weak tree, flowering period, physiological fruiting period, color change period and compounding other pesticides. However, Star Spider has no way to produce resistance to mineral oil, and mineral oil can treat both pests and soots and soots.

Precautions:

The red spider drug basically has no systemic conductivity. The drug does not directly touch the insect egg, and the effect is not effective. The place where the red spider occurs most is the leaf stalk at the back of the blade, which is difficult to spray, so the spray must be Careful and thoughtful, to ensure full infiltration, otherwise it will be laborious and ineffective.

Tips: There are two peaks in Starbucks every year, from April to June, from August to October. Therefore, prevention in advance when peaks are about to come will have a multiplier effect, such as early April and early August. Can focus on prevention and control.

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