Evaluation of the Control Effect of Three Kinds of Seed Coating Agents on Wheat Snow Rot (Mildew)

【Objective】 To study the field medicament screening test of wheat snow rot (mildew) disease and provide guidance for the scientific control of the disease in Xinjiang. 【Method】 Randomized block design was used to investigate the occurrence of wheat snow rot (mildew), the number of total stems and diseased stems in 1 m double row in each treatment. At the same time, the fresh weight of wheat above ground and underground was measured. 【Result】 The total stem numbers of wheat treated with 9% sedaxane – fludioxonil – difenoconazole SC with the dosage of 200 mL / 100kg seed and 400 mL / 100kg seed were (220.33 ± 9.82) and (202.67 ± 7.84) plants / 0.3 m², respectively, which was significantly higher than that of CK treatment, and higher than that of 2.5% fludioxonil SC and 3% difenoconazole SC. The fresh weight of the whole plant of wheat treated with 9% sedaxane – fludioxonil – difenoconazole SC with the dosage of 200 mL / 100kg seed and 400 mL / 100kg seed was (6.79 ± 0.33) and (7.35 ± 0.05)g / plant, respectively, higher than those of wheat plant treated with 2.5% fludioxonil SC, 3% difenoconazole SC and CK. The control effects of the treatment of 200 mL / 100kg seeds and 400 mL / 100kg seeds with 9% sedaxane – fludioxonil – difenoconazole SC on wheat snow rot (mildew) were 78.03% and 79.63%, respectively, which was significantly higher than that of 2.5% fludioxonil SC, and higher than that of 3% difenoconazole SC. All the treatments did not negatively influence the growth and development of the wheat. 【Conclusion】 The treatment of 9% sedaxane – fludioxonil – difenoconazole SC significantly increase the total stem number of wheat, the root growth of wheat, which will play a role in making seedlings stronger. 9% sedaxane – fludioxonil – difenoconazole SC with the dosage of 200 mL / 100kg seed can effectively prevent and control the occurrence and damage of winter wheat snow rot (mildew) in Xinjiang.