There are many people who have been planted all their lives and do not know what a thrips are. To control thrips, we first start with the understanding of thrips.
<h1 class="pgc-h-arrow-right" data-track="3" what is the pest of thrips >? </h1>
To put it simply, the thrips are not horses, they look like this, see the following picture. From the world's point of view, there are more than 2,000 species of thrips in 276 genera known in the world, which are important economic pests, and more than half of them feed on plants. Because thrips are relatively small, it is often difficult for us to find them. When it was discovered, either it was flooded or the plants were already seriously endangered.
Thrips eggs
Thrips nymphs
Thrips
Thrips adult length
<h1 class="pgc-h-arrow-right" data-track="29" > the harm of thrips</h1>
Thrips mostly use adults or nymphs to suck up the sap of plants, usually young tissue. We will see young shoots and young leaves curling and wilting, young fruits falling off, etc., all of which may be the masterpieces of thrips, of course, some diseases can cause similar harm. After the young leaves are damaged, the leaves become thinner, and the gray-white or gray-brown stripes appear on both sides of the midrib of the leaves, and the epidermis is gray-brown, deformed and curled, and the growth momentum is weak, which is easily confused with the lateral multi-eating tarsal mite.
The most serious is that thrips, like aphids, transmit the virus. For example, smoked thrips can spread tomato spotted wilt virus TSWV, which seriously endangers tomatoes, tobacco, lettuce, pineapples, potatoes and other cash crops; western flower thrips, which can spread tomato spotted wilt virus TSWV, phoenix spot necrosis virus INSV and tobacco stripe virus TSV, etc.; of course, not all thrips are pests, such as the tachypent thrips of the genus Thrips that prey on leaf mites and their eggs, and some species can help plants spread pollen, such as horned thrips.
Thrips are harmful to cotton
<h1 class="pgc-h-arrow-right" data-track="30" how to control thrips >? </h1>
There are many ways to prevent thrips, but the troublesome methods are not willing to use. For example, brightly colored yellow or blue sticky worm boards are used, but the cost is higher and it is suitable for greenhouses. This article focuses on chemical control.
Pesticide recommendations: thiamethia, perchlorofluoride, methyl vitamin microemulsion, pyridoxine, furosemide (insecticidal eggs), etc. For small groups, thiamethiasis and perchlorofluoride can be used alone, and if generations overlap and a large outbreak occurs, four pesticides are mixed and mixed, from egg killing to adult insects, otherwise, the effect is not good.
Due to the diurnal and nocturnal nature of thrips, it is recommended to start spraying in the afternoon or evening. In order to enhance the efficacy, silicones can be added as additives to enhance the systemic conduction of pesticides.
The resistance of thrips is already very strong, and the control is becoming more and more difficult, and biological control or physical control will eventually be considered.
@ Farmland cultivator