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Campo DC | Valor | Idioma |
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dc.contributor.author | Isla Climente, Ramón | es_ES |
dc.contributor.author | Guillén Castillo, Mónica | es_ES |
dc.contributor.author | Salmerón Cortasa, Montserrat | es_ES |
dc.date.accessioned | 2017-01-09T11:31:59Z | - |
dc.date.available | 2017-01-09T11:31:59Z | - |
dc.date.issued | 2016 | es_ES |
dc.identifier.citation | Spanish Journal Of Agricultural Research, 14(4) | en |
dc.identifier.issn | 1695-971X | * |
dc.identifier.uri | http://hdl.handle.net/10532/3568 | - |
dc.description.abstract | There are limited studies about the effect of nitrogen (N) deficiency on leaf growth, N status, and photosynthetic capacity of maize grown under field conditions in a Mediterranean climate. The objective of this work was to evaluate the effect of different levels of mineral N availability on leaf gas exchange parameters of sprinkler irrigated maize. The experiment was conducted in a conventional maize field located in the central part of the Ebro valley (Spain) during two seasons. Using a portable LICOR-6400 equipment, instantaneous measurements and light response curves to gas exchange were conducted in plots with different levels of N supply ranging from deficient (no fertilized) to over-fertilized (300 kg N/ha). In addition to gas exchange measurements, mineral soil N content, chlorophyll meter readings (CMR), leaf N content, and grain yield were measured in the different plots. Results showed that grain yield reached a plateau (14.5 Mg/ha) when the mineral N available was about 179 kg/ha. CMR were linearly and highly related to total N in ear leaves. The relationship between light-saturated leaf photosynthesis measurements and CMR was significant but very weak (R2=0.13) at V8 and V14 stages but increased later in the growing season (R2=0.52). Plants with intermediate levels of N supply (48<CMR<54) tended to have slightly higher assimilation rates than plants with higher CMR readings. As the available N increased, the saturation point, the light compensation point and significant increases of dark respiration rate were observed. Under the conditions of the study, leaf N contents of 1.9% in the ear leaf were enough to maximize leaf assimilation rates with no need to over-fertilize the maize crop | en |
dc.description.sponsorship | Spanish Ministry of Science and Innovation (Project AGL2009-12897-C02-02) and FEDER funds | es_ES |
dc.language.iso | en | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/3.0/es/ | * |
dc.subject.other | Suelos y riegos | es_ES |
dc.title | Nitrogen availability effects on gas exchange measurements in field-grown maize (Zea mays L.) under irrigated Mediterranean conditions | en |
dc.type | Journal Contribution | * |
dc.bibliographicCitation.volume | 14(4) | es_ES |
dc.subject.agrovoc | Maíz | es |
dc.subject.agrovoc | Nitrógeno | es |
dc.subject.agrovoc | Fotosíntesis | es |
dc.subject.agrovoc | Conductancia estomática | es |
dc.subject.agrovoc | Intercambio de gases | es |
dc.description.status | Published | es_ES |
dc.type.refereed | Non-Refereed | es_ES |
dc.type.specified | Article | es_ES |
dc.bibliographicCitation.title | Spanish Journal Of Agricultural Research | en |
dc.relation.doi | 10.5424/sjar/2016144-9109 | es_ES |
Aparece en las colecciones: | [DOCIART] Artículos científicos, técnicos y divulgativos |
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