Carrots are rich in vitamins and are indispensable nutrients in life. But the disease has seriously affected the quality of carrots. Pesticide control should be carried out in time. UL FM Fire Hydrant,Fire Hydrant,fire hydrant for sale,wet barrel hydrant SUZHOU RSF VALVE CO.,LTD , https://www.rsf-valve.com
The law of onset: the pathogens with the diseased bodies scattered on the table and the winter in the soil, the seeds can also carry bacteria, are the primary source of infection. The conidia of the disease pathogens absorb the conidia after water absorption, spread by wind and rain and irrigation water, and invade through the pores or penetrate the epidermis. The disease is reinfected frequently and the disease develops rapidly.
China Pesticide Network Xiaobian gives you support for disease prevention:
(1) Use seeds harvested from disease-free plants, seed dressing with new high-fat membrane before planting (can be mixed with seed coating agent), can avoid underground pests, isolate virus infection, do not affect germination and swelling function, strengthen breathing Strength, increase seed germination rate.
(2) Applying manure, timely topdressing, and increasing phosphorus and potassium fertilizers. Appropriate irrigation, strengthen the cultivating loose soil after irrigation, and control the humidity in the field. Eliminate the accumulation of water in the field after the rain.
(3) Timely use the fruit and fruit to make the nutrient transport conduit of the underground fruit thicker, increase the vitality of the fruit, increase the nutrient transport capacity, and improve the disease resistance.
(4) In the early stage of the disease, timely drug control, pesticide manufacturers recommend spraying 40% polysulfide suspension 500 times solution, preferably mixed with new high lipid film to improve the control effect.