2011
DOI: 10.1590/s0100-54052011000100011
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Decomposition of corn and soybean residues under field conditions and their role as inoculum source

Abstract: Necrotrophic parasites of above-ground plant parts survive saprophytically, between growing seasons in host crop residues. In an experiment conducted under field conditions, the time required in months for corn and soybean residues to be completely decomposed was quantified. Residues were laid on the soil surface to simulate notill farming. Crop debris of the two plant species collected on the harvesting day cut into pieces of 5.0cm-long and a 200g mass was added to nylon mesh bags. At monthly intervals, bags … Show more

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Cited by 19 publications
(24 citation statements)
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“…Por isso, o plantio direto assegura maior potencial de inóculo do que o convencional. A decomposição do resíduo vegetal é mais lenta quando a palha reside na superfície do que quando enterrada (19).…”
Section: Eventos Biológicos Ocorrentes Nos Restos Culturaisunclassified
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“…Por isso, o plantio direto assegura maior potencial de inóculo do que o convencional. A decomposição do resíduo vegetal é mais lenta quando a palha reside na superfície do que quando enterrada (19).…”
Section: Eventos Biológicos Ocorrentes Nos Restos Culturaisunclassified
“…Os dados da Figura 3 são confirmados na Tabela 2, onde a menor redução de incidência de podridões radiculares da soja (15,1%) foi obtida quando a soja foi cultivada após dois cultivos seguidos de milho o que possibilitou a decomposição completa de seus restos culturais com a consequente redução do inóculo dos agentes causais de podridão radicular ocorrentes na área experimental (19).…”
Section: Tempo (T) (Meses) Resíduos Culturais (Y) (%)unclassified
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“…In southern Brazil, complete decomposition of soybean residue occurs in 35 months after harvest (21). Thus, during this span, microsclerotia is released on the soil.…”
Section: Microsclerotium Longevity In Soybean Root Tissues Under Natumentioning
confidence: 99%
“…For example, 80/g in the first growing season reached 120/g in the second season, 149/g at the end of the third, reaching 165/g of soil in the fifth year. Up to 1,000 microsclerotia per gram of soil have been quantified (21).…”
Section: Microsclerotium Longevity In Soybean Root Tissues Under Natumentioning
confidence: 99%