Screening legume green manures as nitrogen sources to succeeding non-legume crops

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dc.creatorCarsky, R.
dc.creatorReid, W.S.
dc.creatorSuhet, A.R.
dc.creatorLathwell, D.J.
dc.date1990
dc.date2025-08-19T07:44:10Z
dc.date2025-08-19T07:44:10Z
dc.date.accessioned2026-06-27T15:53:00Z
dc.descriptionA buried bag incubation technique was proposed to monitor N release from soil and decomposing green manure. The technique would facilitate not only the screening of legumes as sources of N but also measurement of the N supplying capacity of soils. Several tropical legumes were incorporated into field plots followed either by maize (Zea mays L.) or by bare fallow. Soil samples from the plow layer containing the incorporated green manure were placed in low density polyethylene bags and buried within the plow layer under the maize crop for in situ incubation. Periodic withdrawal of the bags was accompanied by fallow soil profile sampling. Above ground N accumulation by maize was equally well correlated to N release measured by either method although the bag technique required much less labor. Supplemental experiments suggested that N accumulation in the bags was reduced due to inadequate O2 diffusion but only when O2 demand was high and soil water potential was high. The results show that in situ bag incubation alone or together with fallow soil sampling can be used to estimate the N supplying potential of soil and leguminous residues.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/176142
dc.identifier.urihttp://hdl.handle.net/123456789/116317
dc.languageen
dc.publisherSpringer
dc.rightsLimited Access
dc.sourceCarsky, R.J., Reid, W.S., Suhet, A.R. & Lathwell, D.J. (1990). Screening legume green manures as nitrogen sources to succeeding non-legume crops: III. The buried bag method. Plant and soil, 128(2), 275-282.
dc.subjectgrain legumes
dc.subjectgreen manures
dc.subjectnitrogen
dc.subjectmineralization
dc.subjectmaize
dc.titleScreening legume green manures as nitrogen sources to succeeding non-legume crops
dc.typeJournal Article

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Instituto Internacional de Agricultura Tropical (IITA)