Effects of N-15 application frequency on nitrogen uptake efficiency in Citrus trees
Two irrigation systems were used to compare nitrogen uptake efficiency in citrus trees and to evaluate the NO3- runoff in much less thanNavelinamuch greater than, orange trees [Citrus sinensis (L.) Osbeck] on Carrizo citrange rootstock (Citrus sinensis x Poncirus trifoliata Raf.). These were fertili...
| Autores principales: | , , , |
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| Formato: | article |
| Lenguaje: | Inglés |
| Publicado: |
2017
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| Acceso en línea: | http://hdl.handle.net/20.500.11939/4391 |
| _version_ | 1855032113133256704 |
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| author | Quinones, Ana Banuls, Josefina Primo-Millo, Eduardo Legaz, Francisco |
| author_browse | Banuls, Josefina Legaz, Francisco Primo-Millo, Eduardo Quinones, Ana |
| author_facet | Quinones, Ana Banuls, Josefina Primo-Millo, Eduardo Legaz, Francisco |
| author_sort | Quinones, Ana |
| collection | ReDivia |
| description | Two irrigation systems were used to compare nitrogen uptake efficiency in citrus trees and to evaluate the NO3- runoff in much less thanNavelinamuch greater than, orange trees [Citrus sinensis (L.) Osbeck] on Carrizo citrange rootstock (Citrus sinensis x Poncirus trifoliata Raf.). These were fertilized with 125 g IN as labelled (KNO3)-N-15 and grown outdoors in containers filled with a sand-loamy soil. Two groups of 3 trees received this N dose either in five equally split applications by a flooding irrigation system or in 66 applications by drip. Trees were harvested at the end of the vegetative cycle (December) and the isotopic ratios of N-15/N-14 were measured in the soil-plant system. The N uptake efficiency of the whole tree was higher with drip irrigation (75%) than with flooding system (64%). In the 0-90 cm soil profile, the N immobilized in the organic fraction was similar for both irrigation methods (around 13%), whereas the N retained as NO3- was 1% of the N applied under drip and 10% under flooding. In the last case, most of NO3- remained under root system and it could be lost to leaching either by heavy rainfalls or excessive water applications. These results showed that a drip irrigation system was more efficient for improving water use and N uptake from fertilizer, in addition to potentially reduced leaching losses. |
| format | article |
| id | ReDivia4391 |
| institution | Instituto Valenciano de Investigaciones Agrarias (IVIA) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | ReDivia43912025-04-25T14:43:02Z Effects of N-15 application frequency on nitrogen uptake efficiency in Citrus trees Quinones, Ana Banuls, Josefina Primo-Millo, Eduardo Legaz, Francisco Two irrigation systems were used to compare nitrogen uptake efficiency in citrus trees and to evaluate the NO3- runoff in much less thanNavelinamuch greater than, orange trees [Citrus sinensis (L.) Osbeck] on Carrizo citrange rootstock (Citrus sinensis x Poncirus trifoliata Raf.). These were fertilized with 125 g IN as labelled (KNO3)-N-15 and grown outdoors in containers filled with a sand-loamy soil. Two groups of 3 trees received this N dose either in five equally split applications by a flooding irrigation system or in 66 applications by drip. Trees were harvested at the end of the vegetative cycle (December) and the isotopic ratios of N-15/N-14 were measured in the soil-plant system. The N uptake efficiency of the whole tree was higher with drip irrigation (75%) than with flooding system (64%). In the 0-90 cm soil profile, the N immobilized in the organic fraction was similar for both irrigation methods (around 13%), whereas the N retained as NO3- was 1% of the N applied under drip and 10% under flooding. In the last case, most of NO3- remained under root system and it could be lost to leaching either by heavy rainfalls or excessive water applications. These results showed that a drip irrigation system was more efficient for improving water use and N uptake from fertilizer, in addition to potentially reduced leaching losses. 2017-06-01T10:10:00Z 2017-06-01T10:10:00Z 2003 DEC 2003 article Quinones, A., Banuls, J., Primo-Millo, E., Legaz, F. (2003). Effects of N-15 application frequency on nitrogen uptake efficiency in Citrus trees. Journal of Plant Physiology, 160(12), 1429-1434. 0176-1617 http://hdl.handle.net/20.500.11939/4391 10.1078/0176-1617-01018 en openAccess Impreso |
| spellingShingle | Quinones, Ana Banuls, Josefina Primo-Millo, Eduardo Legaz, Francisco Effects of N-15 application frequency on nitrogen uptake efficiency in Citrus trees |
| title | Effects of N-15 application frequency on nitrogen uptake efficiency in Citrus trees |
| title_full | Effects of N-15 application frequency on nitrogen uptake efficiency in Citrus trees |
| title_fullStr | Effects of N-15 application frequency on nitrogen uptake efficiency in Citrus trees |
| title_full_unstemmed | Effects of N-15 application frequency on nitrogen uptake efficiency in Citrus trees |
| title_short | Effects of N-15 application frequency on nitrogen uptake efficiency in Citrus trees |
| title_sort | effects of n 15 application frequency on nitrogen uptake efficiency in citrus trees |
| url | http://hdl.handle.net/20.500.11939/4391 |
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