EFFICIENCY OF FUNGICIDES FOR OIDIUM CONTROL IN SOYBEAN CROP

Ciencia Agricola Pub Date : 2019-07-25 DOI:10.28998/RCA.V17I1.6140

Matheus da Silva Maciel, G. Fabiani, Jesiomar Delazeri, Douglas Mello Praetorius, Valter Pivotto Bussolotto, R. G. Machado, José de Alencar Lemos Vieira Junior, L. Girardi, Katia Trevizan, R. Elias, Volmir Atilio Farina

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Abstract

One of the most relevant factors in soybean productivity is fungal diseases such as oidium (Microsphaera diffusa), which can be controlled through resistant cultivars or preventive control through the application of fungicides. The aim of the present study was to evaluate the efficiency of chemical fungicides for oidium control and their effects on yield and weight of one thousand seeds (WTS) of soybean crop. Seven treatments were conducted with fungicides for oidium control, and control treatment without fungicide (Treatment 8). Fungicides were effective in controlling oidium incidence and severity and also increased yield. Fungicides tested were: Picoxystrobin 100 gL^-1 + Benzovidiflupir 50 gL^-1 (Treatment 1), Trifloxystrobin 150 gL^-1 + Proticonazol 175 gL^-1 (Treatment 2), Fenpropimorph 750 gL^-1 (Treatment 3), Picoxystrobin 200 gL^-1 + Ciproconazol 80 gL^-1 (Treatment 4), Azoxystrobin 300 gL-1 + Benzovindiflupir 150 gL^-1 (Treatment 5), Mancozeb 750 g.kg^-1 (Treatment 6), Metominostrobin 110 gL^-1 + Tebuconazol 165 gL^-1 (Treatment 7). A difference of 962 kg.ha^-1 (16 sc.ha-1) was observed between the most efficient treatment (T3 - Fenpropimorph 750 g.L^-1) and the control treatment.

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杀菌剂防治大豆作物碘酸盐的效果研究

影响大豆产量的最重要因素之一是真菌病害，如黄萎病(Microsphaera diffusa)，可以通过抗病品种或使用杀菌剂进行预防控制。本研究旨在评价化学杀菌剂防治黄萎病的效果及其对大豆产量和千粒重的影响。施用杀菌剂防治黄锈病7个处理和不施用杀菌剂防治黄锈病处理(处理8)。杀菌剂能有效控制黄锈病的发病率和严重程度，并能提高产量。所测试的杀菌剂有:Picoxystrobin 100 gL-1 +苯并维氟吡喃50 gL-1(处理1)、Trifloxystrobin 150 gL-1 + proticonazole 175 gL-1(处理2)、fenpropro啉750 gL-1(处理3)、Picoxystrobin 200 gL-1 +环丙康唑80 gL-1(处理4)、Azoxystrobin 300 gL-1 +苯并维氟吡喃150 gL-1(处理5)、Mancozeb 750 g.kg-1(处理6)、Metominostrobin 110 gL-1 + tebuconazole 165 gL-1(处理7)，差异为962 kg。在T3 -苯丙咪唑750 g.L-1有效处理与对照处理之间观察到ha-1 (16 sc.ha-1)。

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来源期刊

Ciencia Agricola

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审稿时长

8 weeks