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Effects of 15N application frequency on nitrogen uptake efficiency in citrus trees.

Identifieur interne : 000E17 ( PubMed/Corpus ); précédent : 000E16; suivant : 000E18

Effects of 15N application frequency on nitrogen uptake efficiency in citrus trees.

Auteurs : Ana Qui Ones ; Josefina Ba Uls ; Eduardo Primo Millo ; Francisco Legaz

Source :

Journal of plant physiology [ 0176-1617 ] ; 2003.

RBID : pubmed:14717433

English descriptors

KwdEn :
- Citrus (drug effects), Citrus (growth & development), Citrus (metabolism), Fertilizers (analysis), Nitrates (pharmacology), Nitrogen (metabolism), Nitrogen (pharmacology), Nitrogen Isotopes, Plant Structures (drug effects), Plant Structures (growth & development), Plant Structures (metabolism), Potassium Compounds (pharmacology), Soil (analysis), Water (pharmacology), Water Movements.
MESH :
- chemical , analysis : Fertilizers, Soil.
- drug effects : Citrus, Plant Structures.
- growth & development : Citrus, Plant Structures.
- metabolism : Citrus, Nitrogen, Plant Structures.
- chemical , pharmacology : Nitrates, Nitrogen, Potassium Compounds, Water.
- chemical : Nitrogen Isotopes, Water Movements.

Abstract

Two irrigation systems were used to compare nitrogen uptake efficiency in citrus trees and to evaluate the NO3- runoff in "Navelina" orange trees [Citrus sinensis (L.) Osbeck] on Carrizo citrange rootstock (Citrus sinensis x Poncirus trifoliata Raf.). These were fertilized with 125 g N as labelled K15NO3 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 15N/14N 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.

PubMed: 14717433

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pubmed:14717433

Le document en format XML

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<author><name sortKey="Qui Ones, Ana" sort="Qui Ones, Ana" uniqKey="Qui Ones A" first="Ana" last="Qui Ones">Ana Qui Ones</name>
<affiliation><nlm:affiliation>Departamento de Citricultura y otros Frutales, Instituto Valenciano de Investigaciones Agrarias (I.V.I.A.), Carretera Moncada-Náquera, km 4.5. 46113, Moncada (Valencia), Spain.</nlm:affiliation>
</affiliation>
</author>
<author><name sortKey="Ba Uls, Josefina" sort="Ba Uls, Josefina" uniqKey="Ba Uls J" first="Josefina" last="Ba Uls">Josefina Ba Uls</name>
</author>
<author><name sortKey="Millo, Eduardo Primo" sort="Millo, Eduardo Primo" uniqKey="Millo E" first="Eduardo Primo" last="Millo">Eduardo Primo Millo</name>
</author>
<author><name sortKey="Legaz, Francisco" sort="Legaz, Francisco" uniqKey="Legaz F" first="Francisco" last="Legaz">Francisco Legaz</name>
</author>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">Effects of 15N application frequency on nitrogen uptake efficiency in citrus trees.</title>
<author><name sortKey="Qui Ones, Ana" sort="Qui Ones, Ana" uniqKey="Qui Ones A" first="Ana" last="Qui Ones">Ana Qui Ones</name>
<affiliation><nlm:affiliation>Departamento de Citricultura y otros Frutales, Instituto Valenciano de Investigaciones Agrarias (I.V.I.A.), Carretera Moncada-Náquera, km 4.5. 46113, Moncada (Valencia), Spain.</nlm:affiliation>
</affiliation>
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<author><name sortKey="Ba Uls, Josefina" sort="Ba Uls, Josefina" uniqKey="Ba Uls J" first="Josefina" last="Ba Uls">Josefina Ba Uls</name>
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<author><name sortKey="Millo, Eduardo Primo" sort="Millo, Eduardo Primo" uniqKey="Millo E" first="Eduardo Primo" last="Millo">Eduardo Primo Millo</name>
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<author><name sortKey="Legaz, Francisco" sort="Legaz, Francisco" uniqKey="Legaz F" first="Francisco" last="Legaz">Francisco Legaz</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Citrus (drug effects)</term>
<term>Citrus (growth & development)</term>
<term>Citrus (metabolism)</term>
<term>Fertilizers (analysis)</term>
<term>Nitrates (pharmacology)</term>
<term>Nitrogen (metabolism)</term>
<term>Nitrogen (pharmacology)</term>
<term>Nitrogen Isotopes</term>
<term>Plant Structures (drug effects)</term>
<term>Plant Structures (growth & development)</term>
<term>Plant Structures (metabolism)</term>
<term>Potassium Compounds (pharmacology)</term>
<term>Soil (analysis)</term>
<term>Water (pharmacology)</term>
<term>Water Movements</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Fertilizers</term>
<term>Soil</term>
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<term>Plant Structures</term>
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<keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Citrus</term>
<term>Plant Structures</term>
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<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Citrus</term>
<term>Nitrogen</term>
<term>Plant Structures</term>
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<keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en"><term>Nitrates</term>
<term>Nitrogen</term>
<term>Potassium Compounds</term>
<term>Water</term>
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<keywords scheme="MESH" type="chemical" xml:lang="en"><term>Nitrogen Isotopes</term>
<term>Water Movements</term>
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<front><div type="abstract" xml:lang="en">Two irrigation systems were used to compare nitrogen uptake efficiency in citrus trees and to evaluate the NO3- runoff in "Navelina" orange trees [Citrus sinensis (L.) Osbeck] on Carrizo citrange rootstock (Citrus sinensis x Poncirus trifoliata Raf.). These were fertilized with 125 g N as labelled K15NO3 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 15N/14N 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.</div>
</front>
</TEI>
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<DateCreated><Year>2004</Year>
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<DateCompleted><Year>2004</Year>
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<DateRevised><Year>2013</Year>
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<Title>Journal of plant physiology</Title>
<ISOAbbreviation>J. Plant Physiol.</ISOAbbreviation>
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<ArticleTitle>Effects of 15N application frequency on nitrogen uptake efficiency in citrus trees.</ArticleTitle>
<Pagination><MedlinePgn>1429-34</MedlinePgn>
</Pagination>
<Abstract><AbstractText>Two irrigation systems were used to compare nitrogen uptake efficiency in citrus trees and to evaluate the NO3- runoff in "Navelina" orange trees [Citrus sinensis (L.) Osbeck] on Carrizo citrange rootstock (Citrus sinensis x Poncirus trifoliata Raf.). These were fertilized with 125 g N as labelled K15NO3 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 15N/14N 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.</AbstractText>
</Abstract>
<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Quiñones</LastName>
<ForeName>Ana</ForeName>
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<AffiliationInfo><Affiliation>Departamento de Citricultura y otros Frutales, Instituto Valenciano de Investigaciones Agrarias (I.V.I.A.), Carretera Moncada-Náquera, km 4.5. 46113, Moncada (Valencia), Spain.</Affiliation>
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<Author ValidYN="Y"><LastName>Bañuls</LastName>
<ForeName>Josefina</ForeName>
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<Author ValidYN="Y"><LastName>Millo</LastName>
<ForeName>Eduardo Primo</ForeName>
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<Author ValidYN="Y"><LastName>Legaz</LastName>
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<QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName>
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Effects of 15N application frequency on nitrogen uptake efficiency in citrus trees.

Effects of 15N application frequency on nitrogen uptake efficiency in citrus trees.

Source :

English descriptors

Abstract

Links to Exploration step

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