2014
DOI: 10.1590/0100-5405/1969
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Duração e porcentagem de molhamento foliar determinados pelo espaçamento entrelinhas, e influência sobre a ferrugem asiática da soja

Abstract: A ferrugem asiática da soja causada pelo fungo Phakopsora pachyrhizi, é a doença de maior virulência e rápida disseminação da cultura no Brasil. Para que haja a infecção nas plantas são necessárias condições ambientais favoráveis, principalmente molhamento foliar quantificado pela duração do período de molhamento (DPM). Alterações no espaçamento entrelinhas de cultivo podem modificar a DPM. Este trabalho teve como objetivo verificar o efeito da utilização de dois espaçamentos entrelinhas sobre a duração e porc… Show more

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Cited by 14 publications
(14 citation statements)
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References 9 publications
(4 reference statements)
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“…Currently, although there are various sensor models, the majority of models measures only the presence of leaf wetness, and do not quantify the percentage (GUEDES et al, 2013). According to Igarashi et al (2014), much is said about LWD, but the measurement of leaf wetness percentage is more important because sensors that detect only the presence of water may overestimate the leaf wetness when this occurs at low rates. In this study, only the presence of leaf wetness was considered, and the percentage was not measured.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Currently, although there are various sensor models, the majority of models measures only the presence of leaf wetness, and do not quantify the percentage (GUEDES et al, 2013). According to Igarashi et al (2014), much is said about LWD, but the measurement of leaf wetness percentage is more important because sensors that detect only the presence of water may overestimate the leaf wetness when this occurs at low rates. In this study, only the presence of leaf wetness was considered, and the percentage was not measured.…”
Section: Resultsmentioning
confidence: 99%
“…When the crop was at stage V4, four SIGA spore traps were installed (IGARASHI; BALAN, 2004;GARDIANO et al, 2010;IGARASHI et al, 2014), to determine when the first uredospore of P. pachyrhizi. The distribution was done in accordance with the prevailing wind direction, with two collectors on the east side and two in the middle of the experiment.…”
Section: Methodsmentioning
confidence: 99%
“…Para a realização do trabalho, os seguintes materiais foram utilizados: lâmina de microscopia, fita adesiva dupla face, microscópio óptico comum, microscópio estereoscó-pio, coletor de esporos SIGA (Igarashi et al, 2014), estilete, pinça e kit QuickStix™.…”
Section: Methodsunclassified
“…The fungus P. pachyrhizi penetration is predominantly in the epidermal junction, forming the appressorium (MAGNANI 2007). After infection, injury and uredospore pustules may appear within 7 to 8 days (IGARASHI et al, 2014), thus having a short life cycle, indicating a rapid disease spread (BONDE et al, 2007).…”
Section: Introductionmentioning
confidence: 99%