Inquiries: I am a farmer in Jinchang. As a result of the damage caused by the golden needle, many sunflower seedlings were killed and asked how to control the golden needleworm?
Answer: First, the living habits of goldworms
The golden worm is a larva of T. sinensis and belongs to the order of Coleoptera. In the Hexi area of ​​our province, the dominant species are Staphylococcus fasciatus. In addition, there are also Golden leafworm and D. gondii. Chestworms occur in the spring and mid-April in spring and rise to the tiller to feed on the rhizomes of various crops. From mid-late to late September, mature larvae gradually emerged and emerged. The newly emerged adult stays lurking in the soil for winter.
Second, control methods
1. Agricultural control. Deep plowing, turning crop rotation, and cultivating and weeding can eliminate large numbers of adult and larvae that are lurking in the soil.
2. Artificial control. When plowing and autumn plowing each year, adults and larvae are picked up with plowshares, and poultry feed can be written.
3. Chemical control. (1) Chemical seed dressing. This is the most economical, convenient, and effective method for the prevention and control of golden needles and other underground pests. Commonly used agents include phoxim, chlorpyrifos, etc., weighing 0.2% to 0.25% of the seed weight, adding appropriate amount of water to dilute the seed, and mixing the seed and stuffing. (2) Poisonous sand treatment sowing ditch. Weigh 50% of phoxim EC 250ml per acre, dilute with appropriate amount of water and 30 kg of fine sandy soil and apply it to the sowing ditch before sowing. (3) When the seedlings are seriously affected, 40% phoxim EC may be used as a 1500-fold solution, or 40% methyl isophophate EC may be irrigated 1200-1500 times. Be sure to let the liquid penetrate into the soil. If it is a mulching plant, you can unscrew the nozzle of the sprayer, remove the inner water-repellent sheet, and then place the seeding hole on the membrane with the medicine into the soil.
Valsartan Intermediate,Valsartan Api,Intermediate Of Sartan,Valsartan Cas 114772-53-1
Shandong Bolode Bio-technology Co., Ltd. , https://www.bldpharma.com