Thiofuramide is a thiazolamide fungicide . At present, there are 51 single agents and 24 compounding agents officially registered in the country. The main control area is mainly rice sheath blight.
However, it is active against pathogenic fungi such as Rhizoctonia, Puccinia, Black powder, Sphaerotheca, Vola, and genus, especially for diseases caused by Basidiomycetes. Such as sheath blight and blight, there are special effects, and the effects of various diseases such as white rot, rust, root rot and sclerotinia are particularly prominent.
It has long internal absorption conductivity and long-lasting effect. It can be used for seed dressing and spraying. It can be mixed with most fungicides. After a lot of experiments, no phytotoxic symptoms occur.
With the rapid growth of the cultivation of Chinese medicinal materials, the number of diseases caused by heavy or cross-infection has increased, and the level of medication has gradually increased, and the resistance of various diseases to pesticides has also increased.
Blindly increasing the amount of fungicide used is not the best way to prevent and cure diseases. Therefore, it is particularly important to choose medicines, rational rotation, and scientific experiments.
At present, there are not many nationally registered Chinese herbal medicine fungicides. At present, the Chinese herbal medicine planting area is still carbendazim, thiophanate-methyl, thiram, azoxystrobin, phenamimidazole, zinc, zinc, and zinc. Fresh amine, tebuconazole, carbendazim, metalaxyl, chlorothalonil, mancozeb, enoylmorpholine, propiconazole, etc., farmers complain that diseases are getting worse and worse, and the cost of prevention is getting higher and higher. The cost of each barrel of water (15 kg) of the control agent with obvious effect in retail stores should be more than ten yuan.
According to the functional properties of thiafuramide, since last year, the author has made detailed comparison tests with other fungicides on different Chinese medicinal materials.
First, peony - blight is the main disease that harms peony.
1. Seed dressing: 30 ml per mus of peony seeds with 240 g / liter of thiofuramide suspension (Guanlong rice dew), soak the seeds with water for 50 kg for 24 hours, dry and sown.
In the same field, the drug is treated with seeds in the middle, and the seeds are soaked in water. Experiments have shown that seeds treated with tilfuramide have not been found to have a bacterial disease in the growing season, and the control area has a hazard at the seedling stage.
2, seedling spray: seedling spray takes the center of the earth as the axis, the cross is divided into four equal experimental areas, the experimental formula: 240 g / liter of thiofuramide suspension 10 ml (Guanlong rice dew); Contrast agent: a, 25% azoxystrobin suspension (Yulong Miyou) 10 ml; b, 70% carbendazim wettable powder (Guoguang) 20 g + 80% Fumei double water dispersion granules (Guanlong) 20å…‹; c, 45% nail cream carbendazim WP (Nong Huan) 10 grams.
The above experiments were all sprayed at the seedling stage. After the whole growth period, the effects of the four products were: 240 g / liter of thiofuramide suspension > 45% methyl carbaryl WP > 25% azoxystrobin suspension Agent>70% carbendazim wettable powder 20g +80% Fumei double water dispersible granules.
Moreover, in the area treated with thiafenamide, the growth of peony plants was significantly better than that of other control areas, indicating that tilfuramide has a good stimulating effect on crops.
Second, expectorants - for stem-based rot, chalk disease, sclerotinia, anthracnose, brown spot disease experiment.
1. Seed dressing: According to the planting of 2500-3000 seed buds per acre, 240 g/L of thiofuramide suspension (Guanlong rice dew) 20 ml, and watering 5 kg, seed dressing.
The experimental method is the same as the peony.
In the case of outbreak of peony disease in this year, there is no obvious disease in the early stage of seed dressing with tilfuramide, and some foliar diseases such as anthracnose and brown spot disease are added in the middle and late stages. Therefore, it is recommended to grow under the premise of seed dressing. The period should be combined with foliar application for comprehensive prevention and control.
2, growth period spray: This experiment used 240 g / liter of thiofuramide suspension (Guanlong rice dew) 10 ml +45% prochloraz aqueous emulsion (Zhongjude) 10 ml water 15 kg; control agent 25% Azoxystrobin suspension (Yulong Miyou) 10 ml + 10% phenidazole hydrolyzed granules (woody) 10 g water 15 kg;
Observed throughout the growing season, the tilfuramide group was applied twice throughout the season to achieve the desired control effect. The control group needs to be applied more than three times.
Third, Atractylodes - root rot, blight, white rickets.
Ways and means pharmacy with peony.
Since thiafuramide is tried to be promoted on Chinese medicinal materials, in addition to the above three experiments to promote mature Chinese medicinal materials, the use of other varieties, it is recommended to adhere to the principle of testing and then promotion.
In the prevention and treatment of Chinese medicinal materials, thiazolamide can also be mixed with many bactericides. The effects are more prominent: thiafuram + azoxystrobin, thiazolamide + thiram, thiafuram + phenidazole , thiafuram + prochloraz, thiafuram + tebuconazole and the like.
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