It is easy to form the peak of damage in the late spring and early summer, especially in the sheds near the end of production. The peak period is from August to September. With the gradual increase of temperature, whiteflies will be gradually transferred to open areas. 1. Agricultural control. Timely cleaning of leaves with old leaves and large eggs, and putting them in bags to bring them to the field for proper disposal. Small amounts of kidney beans or lentils can be grown in tomato and cucumber fields, which have a role in monitoring and trapping whitefly. 2. Physical control. The doors, windows, air outlets of the sheds are mainly transparent, plus 40 mesh to 50 mesh insect nets, and damaged insect nets are promptly repaired. A yellow trap board is suspended in the production shed, and a yellow plate 30 cm in size and 40 cm in size hangs in the field at a density of 5 to 10 pieces/mu. 3. Biological control. For green production or organic production bases, 300 to 500/100 plants of Lygus esculenta can be released when the adult population is low (less than 50/100 plant species) and released once in about 10 days. 3 to 4 times, it has a certain effect on delaying population growth in the whitefly population. 4. Chemical control. Tomatoes, kale and other crops can be treated with roots during planting. It is recommended that 25% thiamethoxam water dispersible granules be used for 2000-4000 times. Second, locusts and thrips 1. Physical control. After planting, 15 to 20 pieces/mu will be trapped and killed by vertical trapping of 30 cm and 40 cm of blue insect traps about 10 to 20 cm above the growing point of the vegetables. The height of the suspension will be adjusted according to the growth of the crops, and the insect traps will be replaced in due course. 2. Biological control. In the early stages of its development, it can release East Asian florets to control aphids and thrips. Prevention of thrips and aphids can be released in a quantity of 0.5 heads per square meter, and released once in 14 days; in the case of a thrips, aphids occur lightly, with 1 to 2 heads per plant, released at a density of 1 to 2 heads per square meter, 7 to 10 days before release; Thrips, aphids occur more severe, each plant is greater than 2 heads, according to the density of 10 head / square meters released, 7 to 10 days and then released once. When the whitefly is light, it is released at a density of 1 to 2 heads per square meter to control the whitefly. 3. Chemical control. Prevention of Thrips use 60 g/L of spinosyn Suspension, 300 g/L of Thiamethoxam Suspension; control of aphid 1.5% matrine solution; control of B. tabaci use 19% of the cyanobacteria Amide suspension agent, 22.4% spirotetramat suspension agent and other agents were sprayed for prevention and treatment, focusing on the tender young leaves, flowers, young fruit and other young parts. In the prevention and control, different agents should be used alternately, and the pesticide should be prescribed strictly in accordance with the safety intervals of pesticides. Intermediate for CAS 179324-69-7 Bortezomib Intermediate,Bortezomib Base,Bortezomib Api,Bortezomib Int B Shandong Bolode Bio-technology Co., Ltd. , https://www.bldpharma.com
First, the whitefly