Improvement of the N fertilizer efficiency with dicyandiamide (dcd) in citrus trees
Identifieur interne : 003453 ( Main/Exploration ); précédent : 003452; suivant : 003454Improvement of the N fertilizer efficiency with dicyandiamide (dcd) in citrus trees
Auteurs : D. Serna [Espagne] ; F. Legaz [Espagne] ; E. Primo-Millo [Espagne]Source :
- Fertilizer research [ 0167-1731 ] ; 1995-01-01.
Abstract
Abstract: Nitrification inhibitors such a dicyandiamide (DCD) help to reduce leaching losses by retaining applied N in the ammoniacal form. Research objectives were to evaluate dicyandiamide added to ammonium sulphate-nitrate (ASN) as a nitrification inhibitor in cultivated soils (Xeropsamments) and its effect on N uptake by citrus (Citrus sinensis (L.) Osbeck). Under field conditions, fertilization of adult trees with ASN (600 g N tree−1) either with or without DCD (2% DCD-N) was compared (ASN+DCD and ASN, respectively). The NH 4 + -N concentrations in plots fertilized with ASN+DCD were significantly higher than ASN plot in the 0-15 cm layer during 5–105 day period. Nitrification started immediately after N application in both treatments (ASN and ASN+DCD). In all three soil layers analyzed, NO− 3-N concentrations were higher in the ASN plots than in the ASN+DCD during the first 20 days. This indicates that nitrification of NH+ 4 from ASN was more rapid in the absence of DCD. On the other hand, fertilization with ASN+DCD kept higher levels of NO− 3-N in soils than ASN during the rest of experience period (40–160 days). Addition of DCD to ASN showed a higher N concentration in the spring-flush leaves with respect to the trees fertilized with ASN, during the growth cycle. These results suggest that the use of a nitrification inhibitor permitted a more efficient utilization of fertilizer N by citrus trees. The plants treated with DCD added to ASN showed a higher yield in number of units per tree and a better fruit colour index than those treated with ASN alone.
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DOI: 10.1007/BF00747693
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Improvement of the N fertilizer efficiency with dicyandiamide (dcd) in citrus trees</title><author><name sortKey="Serna, D" sort="Serna, D" uniqKey="Serna D" first="D." last="Serna">D. Serna</name></author><author><name sortKey="Legaz, F" sort="Legaz, F" uniqKey="Legaz F" first="F." last="Legaz">F. Legaz</name></author><author><name sortKey="Primo Millo, E" sort="Primo Millo, E" uniqKey="Primo Millo E" first="E." last="Primo-Millo">E. 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Serna</name><affiliation wicri:level="1"><country xml:lang="fr">Espagne</country><wicri:regionArea>Instituto Valenciano de Investigaciones Agrarias, Apartado Oficial, 46113, Moncada, Valencia</wicri:regionArea><wicri:noRegion>Valencia</wicri:noRegion></affiliation></author><author><name sortKey="Legaz, F" sort="Legaz, F" uniqKey="Legaz F" first="F." last="Legaz">F. Legaz</name><affiliation wicri:level="1"><country xml:lang="fr">Espagne</country><wicri:regionArea>Instituto Valenciano de Investigaciones Agrarias, Apartado Oficial, 46113, Moncada, Valencia</wicri:regionArea><wicri:noRegion>Valencia</wicri:noRegion></affiliation></author><author><name sortKey="Primo Millo, E" sort="Primo Millo, E" uniqKey="Primo Millo E" first="E." last="Primo-Millo">E. Primo-Millo</name><affiliation wicri:level="1"><country xml:lang="fr">Espagne</country><wicri:regionArea>Instituto Valenciano de Investigaciones Agrarias, Apartado Oficial, 46113, Moncada, Valencia</wicri:regionArea><wicri:noRegion>Valencia</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Fertilizer research</title><title level="j" type="abbrev">Fertilizer Research</title><idno type="ISSN">0167-1731</idno><idno type="eISSN">1573-0867</idno><imprint><publisher>Kluwer Academic Publishers</publisher><pubPlace>Dordrecht</pubPlace><date type="published" when="1995-01-01">1995-01-01</date><biblScope unit="volume">43</biblScope><biblScope unit="issue">1-3</biblScope><biblScope unit="page" from="137">137</biblScope><biblScope unit="page" to="142">142</biblScope></imprint><idno type="ISSN">0167-1731</idno></series><idno type="istex">6CBA532504AE4F2CFDF012E8823E8A2C163A958D</idno><idno type="DOI">10.1007/BF00747693</idno><idno type="ArticleID">BF00747693</idno><idno type="ArticleID">Art20</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0167-1731</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: Nitrification inhibitors such a dicyandiamide (DCD) help to reduce leaching losses by retaining applied N in the ammoniacal form. Research objectives were to evaluate dicyandiamide added to ammonium sulphate-nitrate (ASN) as a nitrification inhibitor in cultivated soils (Xeropsamments) and its effect on N uptake by citrus (Citrus sinensis (L.) Osbeck). Under field conditions, fertilization of adult trees with ASN (600 g N tree−1) either with or without DCD (2% DCD-N) was compared (ASN+DCD and ASN, respectively). The NH 4 + -N concentrations in plots fertilized with ASN+DCD were significantly higher than ASN plot in the 0-15 cm layer during 5–105 day period. Nitrification started immediately after N application in both treatments (ASN and ASN+DCD). In all three soil layers analyzed, NO− 3-N concentrations were higher in the ASN plots than in the ASN+DCD during the first 20 days. This indicates that nitrification of NH+ 4 from ASN was more rapid in the absence of DCD. On the other hand, fertilization with ASN+DCD kept higher levels of NO− 3-N in soils than ASN during the rest of experience period (40–160 days). Addition of DCD to ASN showed a higher N concentration in the spring-flush leaves with respect to the trees fertilized with ASN, during the growth cycle. These results suggest that the use of a nitrification inhibitor permitted a more efficient utilization of fertilizer N by citrus trees. The plants treated with DCD added to ASN showed a higher yield in number of units per tree and a better fruit colour index than those treated with ASN alone.</div></front></TEI><affiliations><list><country><li>Espagne</li></country></list><tree><country name="Espagne"><noRegion><name sortKey="Serna, D" sort="Serna, D" uniqKey="Serna D" first="D." last="Serna">D. Serna</name></noRegion><name sortKey="Legaz, F" sort="Legaz, F" uniqKey="Legaz F" first="F." last="Legaz">F. Legaz</name><name sortKey="Primo Millo, E" sort="Primo Millo, E" uniqKey="Primo Millo E" first="E." last="Primo-Millo">E. Primo-Millo</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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