Journal of Zhejiang Agricultural Sciences ›› 2025, Vol. 66 ›› Issue (8): 1944-1948.DOI: 10.16178/j.issn.0528-9017.20240218

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Effect of different fungicide and plant growth regulator combinations on field defense against major wheat diseases and economic benefits

YANG Yang(), SHI Xiaoli, XU Ruiheng, LI Jun, GAO Xuan   

  1. Yangzhou Jiangdu District Agricultural Technology Comprehensive Service Center, Yangzhou 225200, Jiangsu
  • Received:2024-03-18 Online:2025-08-11 Published:2025-09-04

Abstract:

To prevent wheat diseases, improve yield, and enhance economic benefits, this study conducted field efficacy trials using a combination of fungicides and plant growth regulators. The results showed that treatments 2 and 3 exhibited superior control efficacy against Fusarium head blight and powdery mildew in wheat compared with untreated plots and conventional chemical treatments. Notably, their control efficacy against powdery mildew was particularly significant, with treatment 2 and 3 achieving 99.79% and 99.80%, respectively. Both treatments also demonstrated 85.71% efficacy against Fusarium head blight. Treatment 2 showed moderate efficacy (66.67%) against sharp eyespot, while treatment 3 achieved complete control (100.00%). Therefore, treatment 3 is recommended for fields with severe sharp eyespot outbreaks. All treatments increased wheat yield by 7.36%-11.98%, with economic benefits rising by 124.88-203.29 yuan per 667 m2 compared to the control, likely due to the yield-enhancing effects of the plant growth regulators in treatments 2 and 3. The two combination treatments effectively controlled multiple wheat diseases, promoted pesticide reduction and efficiency, and improved yield, demonstrating potential for broader application.

Key words: wheat diseases, fungicide and plant growth regulator combination, application time, field control efficacy, economic benefits

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