Imiamide is an imidazole fungicide , which has good control effect against rice seedling disease, but the local area also has a decline in control effect. The benzoxazole drug represented by carbendazim was once the main agent for the prevention and treatment of mite disease. With the resistance of the pathogen to the carbendazim, the single use of the drug decreased. Uv Light Bulbs For Plants,Air Purifier With Uv Light,Uv Light Argos,Led Curing Lamp Foshan Kingrate Optoelectronic Technology Co., Ltd. , https://www.kingrateuv.com
In this regard, the researchers of the College of Agronomy and Biotechnology of China Agricultural University and the Institute of Pesticide Testing of the Ministry of Agriculture used mycelial growth rate and microscopic observation to study the growth and development of mimic acid amide against susceptible strains of rice seedling pathogens and resistant mutant strains. And the influence of mycelial growth morphology. According to the pesticide network , the results showed that: 0.5 mg / liter of prochloraz solution can completely inhibit the mycelial growth of sensitive strains, can not inhibit the mycelial growth of resistant strains with different resistance levels; 20 mg / liter of prochloraz solution It can completely inhibit the spore germination of the parent-sensitive strains, and the inhibition rates of spore germination and germ tube elongation of different resistant mutants are 84.1%-89% and 58.5%-65.8%, respectively, indicating that the resistant mutant strain is in the hyphae. The sensitivity of the growth, spore germination, and germ tube elongation to the drug was reduced to varying degrees compared with the parental sensitive strain. After treating the hyphae with 10 mg/L of imidamide solution for 12 hours, the hyphae of the parental sensitive strain expanded and deformed, and the hyphae of the resistant mutant expanded, but there were many small branches on the hyphae, indicating that the drug was resistant. The inhibitory effect of the mutant secondary hyphae was not obvious.
The results showed that the rice seedling pathogen had potential resistance to imidate, and it is recommended to rotate the pesticide with different mechanisms such as dithiocyanomethane and trichloroisocyanuric acid to delay or avoid the resistance. Drug production.