Field Control Effects and Crop Safety Assessment of Triazole Fungicides on Apple Rust  

作　　者：He JIANG Yuxiang LU Xiaoyue CHONG Keqiang CAO Jie WEI Shutong WANG 

机构地区：[1]College of Plant Protection,Hebei Agricultural University,Baoding 071001,China [2]Tangshan Academy of Agricultural Sciences,Tangshan 063001,China [3]Agricultural Scientific Institute of 2^(nd) Division of Xinjiang Production and Construction Corps,Tiemenguan 841005,China

出　　处：《Agricultural Biotechnology》2021年第3期6-10,14,共6页农业生物技术（英文版）

基　　金：National Key R&D Program of China(2016YFD0201100);China Agriculture Research System of MOF and MARA(CARS-27);Key Common Technology Research Project for the High-quality Development of Agriculture in Hebei Province(19226508D);Special Fund for Science and Technology Development of Xinjiang Production and Construction Corps(2018AB035);Science and Technology Research Fund of the Second Agricultural Division of Xinjiang Production and Construction Corps(2019NYGG01).

摘　　要：In order to provide a reference basis for efficient prevention and control of apple rust,apple rust(Gymnosporangium yamadai)was used as the test material,the field control effects of six triazole fungicides with different concentrations and different application times on apple rust,and the safety of application in different periods on the crop were investigated in field trials.The results showed that the control effect and safety of myclobutanil were excellent.In the prevention test,the effects of myclobutanil 40%EC 2000 times and 4000 times dilutions in protecting apple leaves from G.yamadai infection reached more than 98%at 10 d after the second spraying in the fruitlet stage,and in the treatment test,the control effects of inhibiting the spread of leaf lesions were 90.89%and 87.17%at 16 d after the fourth spraying in the fruit expansion stage,respectively.The results of the crop safety test showed that when applying the triazole fungicides with different concentrations from the red bud stage to the fruit expansion stage of apple trees,there were no adverse effects on the leaves,branches,flowers and fruit,as well as no rust or deformity on the fruit surface.When spraying the fungicides from the red bud stage to the fruit expansion stage,except that the single fruit weights in the treatment of the 10%difenoconazole DC 2000 times and myclobutanil 40%EC 4000 times dilutions were reduced without a significant difference from the control,and the values of other treatments were all reduced by more than 9%compared with the control.When applying the fungicides during the fruit expansion period,none of the tested fungicide treatments had a significant effect on the fruit growth.

关 键 词：Apple rust Triazole fungicide Crop safety Field control effect 

分 类 号：S436.611.1[农业科学—农业昆虫与害虫防治]