Complexo penetrante-móvel de cobre como potencializador de fungicidas para ferrugem asiática da soja

Lima, Jefferson Vasconcelos Oliveira de; Cunha, João Paulo Arantes Rodrigues da; Silva Júnior, Manoel Batista da

doi:10.1590/0100-5405/290733

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ORIGINAL ARTICLE • Summa Phytopathol. 52 • 2026 • https://doi.org/10.1590/0100-5405/290733 linkcopiar

Complexo penetrante-móvel de cobre como potencializador de fungicidas para ferrugem asiática da soja

Autoria SCIMAGO INSTITUTIONS RANKINGS

A ferrugem asiática da soja continua sendo uma das principais doenças que afetam a cultura da soja no Brasil. A reduzida eficácia de alguns fungicidas tem levado à busca por melhor controle desta doença. Uma dessas estratégias é otimizar a movimentação dos fungicidas para as partes inferiores das plantas de soja, dossel vegetativo este com maior dificuldade de cobertura pelas pulverizações fitossanitárias. Os objetivos deste estudo foram avaliar o desempenho de três fungicidas comerciais, isoladamente e em combinação com o complexo penetrante-móvel de cobre. Este produto pode potencializar os fungicidas, melhorando a translocação dos princípios ativos. Este estudo avaliou a severidade da doença (dossel superior e inferior) e a produtividade da soja em duas safras consecutivas (2021/2022 e 2022/2023) após quatro aplicações dos tratamentos. O complexo químico sistêmico de cobre combinado com os fungicidas protioconazole + trifloxistrobina + bixafeno e tebuconazol + picoxistrobina + mancozebe reduziu (porém não isoladamente) a severidade da doença (dossel superior e inferior), melhorando o manejo da doença e aumentando a produtividade da soja por duas safras, com forte correlação entre estas duas variáveis analisadas.

Palavras-chave
tecnologia de aplicação de agroquímicos; Phakopsora pachyrhizi ; fitopatologia; sistemicidade

CuPMC	Rate L ha^-1	Fungicide	Rate L ha^-1	Application Stages
Fungicides alone	-	Control (no fungicides)	-	-
		tebuconazole + picoxystrobin + mancozeb	2.250	V_N; R₁; R₃; R₅
		prothioconazole + trifloxystrobin + bixafen	0.500	V_N; R₁; R₃; R₅
		fluxapyroxad + pyraclostrobin	0.350	V_N; R₁; R₃; R₅
CuPMC + fungicides	0.500	Control (CuPMC alone)	-	V_N; R₁; R₃; R₅
		tebuconazole + picoxystrobin + mancozeb	2.250	V_N; R₁; R₃; R₅
		prothioconazole + trifloxystrobin + bixafen	0.500	V_N; R₁; R₃; R₅
		fluxapyroxad + pyraclostrobin	0.350	V_N; R₁; R₃; R₅

Season	CuPMC	Fungicides	SEV (I)		SEV (S)		SEV (M)
2021/2022	Fungicides alone	Control (no fungicides)	78.5%	aA	78.5%	aA	78.5%	aA
		tebuconazole + picoxystrobin + mancozeb	42.7%	aB	3.4%	aB	23.1%	aC
		prothioconazole + trifloxystrobin + bixafen	78.5%	aA	1.6%	aB	40.0%	aBC
		fluxapyroxad + pyraclostrobin	78.5%	aA	6.1%	aB	42.3%	aB
	CuPMC + fungicides	Control (CuPMC alone)	78.5%	aA	67.3%	aA	72.9%	bA
		tebuconazole + picoxystrobin + mancozeb	12.3%	bB	1.7%	bB	7.0%	bB
		prothioconazole + trifloxystrobin + bixafen	12.3%	bB	1.3%	bB	6.8%	bB
		fluxapyroxad + pyraclostrobin	43.2%	bB	4.2%	bB	23.7%	bB
2022/2023	Fungicides alone	Control (no fungicides)	78.5%	aA	78.5%	aA	78.5%	aA
		tebuconazole + picoxystrobin + mancozeb	25.7%	aC	2.4%	bD	14.0%	aC
		prothioconazole + trifloxystrobin + bixafen	27.5%	aC	4.8%	bC	16.1%	aC
		fluxapyroxad + pyraclostrobin	43.5%	aB	8.7%	bB	26.1%	aB
	CuPMC + fungicides	Control (CuPMC alone)	78.5%	bA	78.5%	aA	78.5%	bA
		tebuconazole + picoxystrobin + mancozeb	20.6%	bC	0.8%	bD	10.7%	bC
		prothioconazole + trifloxystrobin + bixafen	19.3%	bC	19.3%	bC	10.1%	bC
		fluxapyroxad + pyraclostrobin	31.7%	bB	5.0%	bB	18.4%	bB
	SEV (I)		SEV (S)		SEV (M)
Season	2021/2022	2022/2023	2021/2022	2022/2023	2021/2022	2022/2023
D	0.587(≥0.01)	0.185(≥0.01)	0.0298(≥0.01)	0.354(≥0.01)	0.0263(≥0.01)	0.0223(≥0.01)
F	0.010(≥0.01)	0.048(≥0.01)	0.010(≥0.01)	0.037(≥0.01)	0.010(≥0.01)	0.010(≥0.01)
F (P) 1	0.523(≥0.01)	0.038(≥0.01)	0.369(≥0.01)	0.078(≥0.01)	0.275(≥0.01)	0.275(≥0.01)
F (P) 2	0.107(<0.05) NS	0.022(<0.05)	0.202(<0.05) NS	0.642(<0.05) NS	0.048(<0.05)	0.014(<0.05)
CV (%)	19.58%	21.84%	24.29%	17.16%	5.18%	11.08%

Season	CuPMC	Fungicides	PROD	%RP	%C (I)	%C (S)	%C (M)
2021/2022	Fungicides alone	Control (no fungicides)	3008 cA	45.6%	0.0%	0.0%	0.0%
		tebuconazole + picoxystrobin + mancozeb	4131 bC	6.0%	84.0%	96.8%	90.4%
		prothioconazole + trifloxystrobin + bixafen	3533 bB	23.9%	72.3%	97.8%	85.1%
		fluxapyroxad + pyraclostrobin	3226 cB	35.7%	56.9%	91.5%	74.2%
	CuPMC + fungicides	Control (CuPMC alone)	3103 cA	41.1%	9.3%	26.5%	17.9%
		tebuconazole + picoxystrobin + mancozeb	4379 aA	0.0%	91.6%	97.9%	94.7%
		prothioconazole + trifloxystrobin + bixafen	4101 bA	6.8%	92.3%	98.2%	95.2%
		fluxapyroxad + pyraclostrobin	3996 bA	9.6%	74.4%	95.0%	84.7%
2022/2023	Fungicides alone	Control (no fungicides)	2254 cB	138.3%	0.0%	0.0%	0.0%
		tebuconazole + picoxystrobin + mancozeb	4950 bC	8.5%	78.6%	97.4%	88.0%
		prothioconazole + trifloxystrobin + bixafen	4907 bC	9.5%	76.1%	94.3%	85.2%
		fluxapyroxad + pyraclostrobin	3794 bB	41.6%	63.9%	82.5%	73.2%
	CuPMC + fungicides	Control (CuPMC alone)	2539 cA	111.5%	6.7%	10.1%	8.4%
		tebuconazole + picoxystrobin + mancozeb	5371 aA	0.0%	89.9%	98.7%	94.3%
		prothioconazole + trifloxystrobin + bixafen	5142 aA	4.5%	89.8%	98.2%	94.0%
		fluxapyroxad + pyraclostrobin	4325 bA	24.2%	79.8%	91.4%	85.6%

Test	2021/2022 Season	2022/2023 Season
D	0.089(≥0.01)	0.0850.01)
F	0.475(≥0.01)	0.031(≥0.01)
F(P) 1	0.041(≥0.01)	0.834(0.01)
F(P) 2	0.000(0.05)	0.632(0.05) NS
CV(%)	3.61%	5.95%

Harvest	CuPMC	Fungicides	PROD	SEV (M)	Pearson
2021/2022	Fungicides alone	Control (no fungicides)	3008 cA	78.5% aA	-0.87
		tebuconazole + picoxystrobin + mancozeb	4131 aB	23.1% aB
		prothioconazole + trifloxystrobin + bixafen	3533 bB	40.0% aBC
		fluxapyroxad + pyraclostrobin	3226 cB	42.3% aC
	CuPMC + fungicides	Control (CuPMC alone)	3103 cA	72.9% bA	-0.98
		tebuconazole + picoxystrobin + mancozeb	4379 aA	7.0% bB
		prothioconazole + trifloxystrobin + bixafen	4101 bA	6.8% bB
		fluxapyroxad + pyraclostrobin	3996 bA	23.7% bB
2022/2023	Fungicides alone	Control (no fungicides)	2254 cB	78.5% aA	-0.97
		tebuconazole + picoxystrobin + mancozeb	4950 aB	14.0% aC
		prothioconazole + trifloxystrobin + bixafen	4907 aB	16.1% aC
		fluxapyroxad + pyraclostrobin	3794 bB	26.1% aB
	CuPMC + fungicides	Control (CuPMC alone)	2539 cA	78.5% bA	-0.97
		tebuconazole + picoxystrobin + mancozeb	5371 aA	10.7% bC
		prothioconazole + trifloxystrobin + bixafen	5142 aA	10.1% bC
		fluxapyroxad + pyraclostrobin	4325 bA	18.4% bB

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Grupo Paulista de Fitopatologia FCA/UNESP - Depto. De Produção Vegetal, Caixa Postal 237, 18603-970 - Botucatu, SP Brasil, Tel.: (55 14) 3811 7262, Fax: (55 14) 3811 7206 - Botucatu - SP - Brazil
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[1] Key: CuPMC: copper penetrant-mobile complex (P.C. Fulland^®); tebuconazole + picoxystrobin + mancozeb (P.C. Blindado^®) associated with 0.500 L ha^-1 adjuvant soy methyl ester (P.C. Rumba^®); prothioconazole + trifloxystrobin + bixafen (P.C. Fox Xpro^®) associated with 0.375 L ha^-1 adjuvant soy methyl ester (P.C. Aureo^®); fluxapyroxad + pyraclostrobin (P.C. Orkestra^®) associated with 0.500 L ha^-1 adjuvant non-ionic mineral oil (P.C. Assist^®).