Introduction of commonly used acaricide knowledge

Apple leafhopper is an important pest in apple production. It has few individuals and breeds rapidly during high temperature and drought. It seriously affects the normal physiological functions of apple leaves and weakens the tree vigor. There are mainly three kinds of apple trees in orchards. That is, Hawthorn leafhopper, two-leafhopper and apple moss. These three species of apes have experienced four stages in one generation, namely, egg, cub, raccoon, and pupa, and the eggs are wintering eggs and summer eggs. At present, the prevention and control of it mainly uses chemical methods of prevention and control. In order to better apply acaricides and improve the control effect, the prevention and control objects, application time, and efficacy of common acaricides are described as follows:

Thianthone (Nisolil): High activity against eggs and ruminants, low activity against adults, slower drug efficacy, reaching the peak of efficacy within 7-10 days after application and sustained for 40-50 days. It is recommended before flowering. use. The commonly used formulations are 5% EC and wettable powders, and the dosage is 1000-1500 times.

Tetramethoxamine (Apollo, dying dead): It has good control effect on eggs, it also has certain activity on Ruoqiang, and it has poor effect on rickettsia. The efficacy of tetrazolium is slow, and it can show good control effect 10 days after administration. The validity period is as long as 50-60 days. It is recommended to use before flowering. The commonly used formulations are 20% suspensions, with an amount of 1500-2000 times.

哒螨 Ling (speed 螨 spirit, 哒螨 ketone): The eggs, larvae, Ruoqiang, Chengyu have a good control effect.哒螨 杀 杀 杀 杀 杀 杀 快 , , 快 快 快 快 快 快 快 快 快 快 快 快 快 快 。. The commonly used formulations are 15% EC and 20% wettable powder, and the dosage is 1500-2000 times.

Triazotin: It has good effects on Ruoqiang, Chengyu and Xiazi, but it has no effect on overwintering eggs. Triazotin has good fast-acting effect and long residual period. It is recommended to use before and after bagging. Commonly used formulations are 20 % wettable powder, dosage 1500-2000 times.

Ziconazole ester (Ba Zhi Ling): It has good control effect on eggs, larvae, Ruoqiang, Chengyu, and it has a fast-acting effect, and the effective period is more than 30 days. It is recommended to use after falling. Commonly used formulations are 5% of the suspension agent, the amount of 2000-3000 times.

A Verbactant: It has good control effect on Chengyu and Ruoqiang, but it does not kill eggs. It can also treat pests such as golden-grained moth, leaf leaf moth, aphid and leaf leaf moth. Abamectin has strong permeability and residual effect. Period, it is recommended to use Apple after bagging. The commonly used dosage forms are 1.8% of EC of 3000-4000 times and 3.2% of EC of 5000-6000 times.

Spironolactone (endangered): It has good activity on eggs and quail eggs, and has the best control effect on eggs. Although it does not kill hens, it can be sterilized. The period of persistence of spirolactone is as long as 40-50 days, but Higher prices, conditional orchards are recommended before flowering. Commonly used formulations have 24% EC of 4000-5000 times.

Precautions: Acarids are very resistant to acaricides and it is recommended that various acaricides be used interchangeably. Do not use the same acaricide more than twice in one year. Emulsifiable concentrates are not recommended until after tapering. Improper use will affect the smoothness of the fruit surface.

Fresh Plum

Fresh Plum Fruit,Plum Dried Fruit,Fruit Sour Plum,Sweet Sour Plum

Laiwu Manhing Vegetables Fruits Corporation , https://www.manhingfood.com