Rational use of tebuconazole, imidacloprid and other seed dressings to prevent wheat pests and diseases

Reasonable use of tebuconazole seed dressing before wheat sowing can effectively prevent diseases such as smut, smut, root rot, total etch and early sheath blight, and rational use of imidacloprid seed dressing can effectively control golden worm Such as underground pests and early aphids. Reasonable mixing of these two drugs can achieve effective anti-fungal effect. 100 kg of wheat can be used with 430 g / liter of tebuconazole suspension 10 g, 70% imidacloprid water dispersible granules 200 g plus appropriate amount of water and mix thoroughly Conditional recommendations use professional seed dressings for seed dressing.

Mixing wheat with tebuconazole, usually 3 to 4 grams of tebuconazole per 100 kilograms of wheat, the wheat emergence period may be delayed by one or two days after seed dressing, but has no effect on wheat germination rate, and Miao Qi Miaozhuang The root system is developed, the leaves are dark green and the leaves are wide. Note that the dosage should not be too large, and the pure medicinal amount of 100 kg of tebuconazole should be more than 6 g, which is likely to have a large adverse effect on the emergence rate and emergence speed of wheat. The field planted too late, the temperature after sowing is low, and the seed dressing with tebuconazole has a great influence on the emergence of wheat, which is not suitable for use. Bayer's 60g/L tebuconazole seed treatment suspension agent, Shaanxi Meibang Pesticide Co., Ltd. 60g/L tebuconazole suspension seed coating agent, registered for wheat control smut, recommended for every 100kg seed pure 1.8 to 2.7 grams of coated seeds; registered for wheat control of sheath blight, it is recommended to use 3 to 4 grams of coated seeds per 100 kilograms of seeds. Jiangsu Longlight Chemical Co., Ltd. 60 g / l tebuconazole suspension seed coating agent, registered for wheat control smut, it is recommended to use 1.8 to 3.6 grams of coated seeds per 100 kg of seeds. Zhejiang Tianfeng Bioscience Co., Ltd. 31% ethiazole and imidacloprid suspension seed coating agent, containing tebuconazole 1%, imidacloprid 30%, registered for wheat control smut and aphids, recommended for every 100 kg of seeds with pure medicine 108.5 ~ 124 grams of coated seeds. It is also known that Jiangsu Longlight Chemical Co., Ltd.'s 21% ethiazole-imidacloprid suspension seed coating agent, Bayer's O'Brien 31.9% ethiazole-Imidacloprid suspension seed coating agent, etc., have been widely used in wheat production in recent years. , achieved better control of pests and diseases and strong seedlings.

Compared with tebuconazole, difenoconazole inhibited the growth of wheat and other crops much less. Floclocyanonitrile had no inhibitory effect on wheat growth, and it was used for wheat seed dressing more widely. The rational use of these two kinds of medicines before seeding does not affect the speed of wheat emergence. Syngenta's 4.8% phenyl ether·Fluoridazole suspension seed coating agent, containing 2.4% of difenoconazole and chlorfenapyr, and 200 ml of seed preparation per 100 kg of wheat seeds can effectively prevent and cure Wheat smut, root rot, total etch disease, early sheath blight and other diseases, and can promote root growth and improve wheat stress resistance. The company's 27% phenyl ether · thief worm suspension seed coating agent, containing difenoconazole 2.2%, fludioxon 2.2%, thiamethoxam 22.6%, 200 ml per 100 kg of wheat seed preparation In addition to being able to effectively control the above diseases, seed dressing can effectively control underground pests such as golden worms and early aphids, and promote wheat root growth and promote tillering, which is beneficial to increase the number of effective stems per plant.

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(Source: Pesticide Newsletter)