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dc.contributor.authorRodríguez, Alejandra
dc.contributor.authorPeña-Fleitas, M. Teresa
dc.contributor.authorPadilla, Francisco M.
dc.contributor.authorGallardo, Marisa
dc.contributor.authorThompson, Rodney B.
dc.date.accessioned2021-01-11T11:42:58Z
dc.date.available2021-01-11T11:42:58Z
dc.date.issued2020-12-19
dc.identifier.issn2073-4395
dc.identifier.urihttp://hdl.handle.net/10835/9285
dc.description.abstractExcessive N application occurs in greenhouse vegetable production. Monitoring methods of immediately available soil N are required. [NO3−] in soil solution, sampled with ceramic cup samplers, and [NO3−] in the 1:2 soil to water (v/v) extract were evaluated. Five increasing [N], from very N deficient (N1) to very N excessive (N5) were applied throughout three fertigated pepper crops by combined fertigation/drip irrigation. The crops were grown in soil in a greenhouse. Soil solution [NO3−] was measured every 1–2 weeks, and extract [NO3−] every 4 weeks. Generally, for treatments N1 and N2, both soil solution and extract [NO3−] were continually close to zero, and increased with applied [N] for treatments N3–5. The relationships of both methods to the nitrogen nutrition index (NNI), an indicator of crop N status, were assessed. Segmented linear analysis gave R2 values of 0.68–0.70 for combined data from entire crops, for both methods. NNI was strongly related to increasing [NO3−] up to 3.1 and 0.9 mmol L−1 in soil solution and extracts, respectively. Thereafter, NNI was constant at 1.04–1.05, with increasing [NO3−]. Suggested sufficiency ranges were derived. Soil solution [NO3−] is effective to monitor immediately available soil N for sweet pepper crops in SE Spain. The extract method is promising.es_ES
dc.language.isoenes_ES
dc.publisherMDPIes_ES
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectCapsicum annuum L.es_ES
dc.subjectceramic suction cupses_ES
dc.subjectgreenhousees_ES
dc.subjectnitrate leachinges_ES
dc.subjectNNIes_ES
dc.subjectsoil solutiones_ES
dc.subjectsoil testinges_ES
dc.subjectsoil-water extractses_ES
dc.subjectsufficiency valueses_ES
dc.subjectvegetable cropses_ES
dc.titleSoil Monitoring Methods to Assess Immediately Available Soil N for Fertigated Sweet Pepperes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttps://www.mdpi.com/2073-4395/10/12/2000es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES


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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internacional