首页|Is tank mixing site-specific premixes and multi-site fungicides effective and economic for managing soybean rust? a meta-analysis

Is tank mixing site-specific premixes and multi-site fungicides effective and economic for managing soybean rust? a meta-analysis

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  • NSTL
  • Elsevier
Soybean rust (SBR), caused by Phakopsora pachyrhizi, is controlled with sequential applications of commercial premixes containing two and, more recently, three site-specific fungicides. However, their efficacy has been reduced due to the development of fungicide resistance in the fungal population; hence the use of multi-site fungicides in tank mixing has been encouraged. In this work we used data from 45 uniform fungicide trials conducted across eight Brazilian states during three crop seasons (2014/15, 2015/16, and 2017/18) to identify scenarios when the practice of adding multi-site fungicides in commercial premixes was both technical- and cost-effective. Premixes of quinone outside inhibitor (QoI) + demethylation inhibitors (DMI) or succinate dehydrogenase inhibitors (SDHI) were applied alone, or tank mixed with multi-site fungicides. Three premixes (PICOxystrobin + CYPRoconazole, PYRAclostrobin + FLUXapyroxad and AZOXystrobin + BENZovindiflupyr) were tank mixed with one of three multi-site fungicides (+MANCozeb, +COPpeR oxychloride, and +ChLORothalonil). The benefits from tank mixing a multi-site tended to be highest for the least effective premix. Improvements in control efficacy ((C) over bar, percent point; p.p.) and yield response ((D) over bar, kg/ha) ranged from 3 to 15 p.p. and 58-240 kg/ha, respectively. The improvements in (C) over bar and (D) over bar were affected by severity in the non-treated check; significantly higher improvements in (D) over bar were determined in trials experiencing high SBR severity levels (>80%). The economic analysis for scenarios of soybean price and multi-site costs showed that the addition of +MANC, given its lower price, was more likely to be profitable compared with +CLOR and +COPR, particularly when tank mixed with the least effective commercial premix.

Phakopsora pachyrhiziChemical controlManagementProfitability

Machado, Franklin J.、Barro, Jhonatan P.、Godoy, Claudia, V、Dias, Alfredo R.、Forcelini, Carlos A.、Utiamada, Carlos M.、Andrade, Edson R.、Juliatti, Fernando C.、Grigolli, Jose Fernando J.、Campos, Hercules D.、Araujo, Ivan Pedro、Trentini Roy, Joao Mauricio、Nunes Jr, Jose、da Silva, Luis Henrique C. P.、Canteri, Marcelo G.、Senger, Marina、Muller, Monica A.、Martins, Monica C.、Debortoli, Monica Paula、Furlan, Silvania H.、Madalosso, Tiago、Carlin, Valtemir J.、Venancio, Wilson S.、Del Ponte, Emerson

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Univ Fed Vicosa, Dept Fitopatol, BR-36570000 Vicosa, MG, Brazil

Embrapa Soja, BR-86001970 Londrina, PR, Brazil

Fundacao Chapadao, BR-79560000 Chapadao Do Sul, MS, Brazil

Univ Passo Fundo, BR-99052900 Passo Fundo, RS, Brazil

Tagro, BR-86070460 Londrina, Parana, Brazil

Inst Mato Grossense Algodao, BR-78049015 Cuiaba, MT, Brazil

Univ Fed Uberlandia, BR-38400902 Uberlandia, MG, Brazil

Fam Pesquisa & Solucbes Agr, BR-14026160 Ribeirao Preto, SP, Brazil

Univ Rio Verde, BR-75901970 Rio Verde, Go, Brazil

Fundacao Mato Grosso, BR-78750000 Rondonapolis, MT, Brazil

Ctr Pesquisa Agr Copacol, BR-85415000 Cafelandia, PR, Brazil

Ctr Tecnol Pesquisas Agr, BR-74130012 Goiania, Go, Brazil

Agro Carregal, BR-75907454 Rio Verde, Go, Brazil

Univ Estadual Londrina, BR-86057970 Londrina, Parana, Brazil

3M Experimentacao Agr, BR-84046060 Ponta Grossa, Parana, Brazil

Circulo Verde Assessoria Agronam & Pesquisa, BR-47850000 Luis Eduardo Magallthes, BA, Brazil

Inst Phytus, BR-97111970 Santa Maria, RS, Brazil

Inst Biol, BR-13012970 Campinas, SP, Brazil

Agrodinamica, BR-78300000 Tangara Da Serra, MT, Brazil

Univ Estadual Ponta Grossa, BR-84010330 Ponta Grossa, Parana, Brazil

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2022

10.1016/j.cropro.2021.105839

Crop Protection

Crop Protection

SCI
ISSN：0261-2194
年,卷(期)：2022.151
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