N transfer from green manures to lettuce in an intercropping cultivation system

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dc.creatorRogério Haruo Sakai
dc.creatorEdmilson José Ambrosano
dc.creatorAna Clarissa Alves Negrini
dc.creatorPaulo Cesar Ocheuze Trivelin
dc.creatorEliana Aparecida Schammass
dc.creatorPaulo César Tavares de Melo
dc.date2011
dc.date.accessioned2026-07-07T03:53:44Z
dc.descriptionThe aim of this work was to evaluate the transfer of N via biological nitrogen fixation from green manures to intercropped lettuce using the 15N abundance method. The treatments consisted of lettuce with black oats, lettuce with cowpea, lettuce with white lupin and monocropped lettuce (control). Green manures were sown at two different times including the following: 60 days before transplanting of lettuce seedlings and simultaneous to transplanting of lettuce seedlings. N transfer was estimated using the natural 15N abundance method. It was observed that lettuce intercropped with green manures reached the same fresh mass of monocropped lettuce when the green manures were sown at the same time as the vegetables were planted. However, when the green manures were sown previously, the fresh mass of the monocropped lettuce was higher, and independent of the sowing time of green manures, the monocropped lettuce reached a higher dry mass. White lupin and cowpea transferred higher amounts of N regardless of sowing time, and the C:N ratio of white lupin to cowpea was lower compared to black oats. Intercropping with white lupin, cowpea and black oat transferred 18, 17 and 7% of N, respectively, to lettuce.
dc.formatapplication/pdf
dc.identifier1679-9275
dc.identifierhttps://www.redalyc.org/articulo.oa?id=303026598013
dc.identifier.urihttp://hdl.handle.net/123456789/446498
dc.languageen
dc.publisherUniversidade Estadual de Maringá
dc.relationhttp://www.redalyc.org/revista.oa?id=3030
dc.rightsActa Scientiarum. Agronomy
dc.sourceActa Scientiarum. Agronomy (Brasil) Num.4 Vol.33
dc.subjectAgrociencias
dc.titleN transfer from green manures to lettuce in an intercropping cultivation system
dc.typeartículo científico

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Acta Scientiarum. Agronomy - Universidade Estadual de Maringá