Control of rice false disease - timely medication is critical

In 2018, there were more rainy days in the concentrated heading stage of rice in Susong and other places, which was conducive to the occurrence of rice smut. The disease mostly showed a peak of symptoms in the half-month after rice panicle, and then the symptoms gradually decreased. The field condition was basically stable about 1 month after the heading. The disease can prevent and cure, should be prevented with high-efficiency drugs about 1 week before the rupture, no specific treatment.

Thiofuramide and rice amide cannot be used to control rice false smut. Azoxystrobin is a suitable drug for controlling rice false smut. It is used in a sufficient amount about 1 week before the rice breaks, and usually has good control effect. The dosage of the drug in production is usually too small (the amount of the active ingredient of the drug is usually smaller when using the compounding agent), and the control effect on the disease will be affected, especially in this year, the rice breaks and the heading period is cloudy and rainy, and the rice is curved. In the case of a risk of epidemics, it is advisable to use an azole fungicide such as tebuconazole, epoxiconazole or benzoxazole or a highly effective and applicable drug for controlling rice smut in Jinggangmycin to ensure the control effect.

In 2018, most of the rice in the Susie and other places had no continuous rainy weather for many days before and after the heading period, and it was not necessary to delay the application of the disease such as rice false disease due to continuous rain. Judging from the current situation, the ear disease, ear blast and rice smut disease are better controlled. Diseases such as rice false smut in the field are not well controlled. In addition to the weather, it is also related to the selection of medicines, the method of mixing medicines, the quality of pesticides, etc. It is advisable to analyze and summarize the lessons learned to avoid similar problems in the future.

Thiofuramide is mainly used in rice to control sheath blight, and it is an effective and applicable drug for controlling sheath blight. Good control effect and long-lasting effect are its excellent features. Rice amide is a highly effective and applicable drug for controlling rice blast. These two kinds of medicines are all good medicines, but the sterilization spectrum is very narrow, and it has a good effect when used correctly. Azoxystrobin has a broad spectrum of bactericidal action and is a suitable drug for controlling rice smut. It also has a certain effect on the diseases of sheath blight and rice blast, and has certain effects on regulating rice growth. This medicine was originally used for cash crops. It has been used as a good medicine in rice fields in recent years, but it must be used.

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(Source: Pesticide Newsletter)

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