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Registro Completo
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
26/08/2020 |
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Data da última atualização: |
26/08/2020 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
ARAÚJO, E. R.; RESENDE, R. S. |
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Título: |
Propineb efficiency in controlling downy mildew of onion under field conditions. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Australasian Plant Disease Notes, Berlim, v. 15, n. 34, p. 1-3, 2020. |
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Idioma: |
Inglês |
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Conteúdo: |
Downy mildew of onion has worldwide occurrence. This study aimed to evaluate the effect of weekly sprays of different active ingredients on the area under a disease progress curve (AUDPC) and on the commercial yield of onion, under field conditions. We observed that propineb sprays resulted in the highest values of yield in 2017 (32.98 t ha−1) and 2018 (20.70 t ha−1). Propineb (130.66) and metalaxyl-M + mancozeb (144.66) presented the lowest AUDPC values in 2017. Metalaxyl-M (100 g ha−1) + mancozeb (1600 g ha−1), bentiavalicarb-isopropyl (56.25 mL ha−1) + chlorothalonil (562.5 mL ha−1) and bentiavalicarb-isopropyl (40 mL ha−1) + fluazinam (100 mL ha−1) resulted in higher yields than the control (water) in the two years of testing. We emphasise the importance of using fungicides with protective action to control downy mildew of onion. |
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Palavras-Chave: |
Allium cepa; Chemical control; Peronospora destructor. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 01469naa a2200169 a 4500
001 1129866
005 2020-08-26
008 2020 bl uuuu u00u1 u #d
100 1 $aARAÚJO, E. R.
245 $aPropineb efficiency in controlling downy mildew of onion under field conditions.$h[electronic resource]
260 $c2020
520 $aDowny mildew of onion has worldwide occurrence. This study aimed to evaluate the effect of weekly sprays of different active ingredients on the area under a disease progress curve (AUDPC) and on the commercial yield of onion, under field conditions. We observed that propineb sprays resulted in the highest values of yield in 2017 (32.98 t ha−1) and 2018 (20.70 t ha−1). Propineb (130.66) and metalaxyl-M + mancozeb (144.66) presented the lowest AUDPC values in 2017. Metalaxyl-M (100 g ha−1) + mancozeb (1600 g ha−1), bentiavalicarb-isopropyl (56.25 mL ha−1) + chlorothalonil (562.5 mL ha−1) and bentiavalicarb-isopropyl (40 mL ha−1) + fluazinam (100 mL ha−1) resulted in higher yields than the control (water) in the two years of testing. We emphasise the importance of using fungicides with protective action to control downy mildew of onion.
653 $aAllium cepa
653 $aChemical control
653 $aPeronospora destructor
700 1 $aRESENDE, R. S.
773 $tAustralasian Plant Disease Notes, Berlim$gv. 15, n. 34, p. 1-3, 2020.
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