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Publicação:
Extração e exportação de nutrientes pelo híbrido de mamona Lyra

dc.contributor.authordo Nascimento, Martha Santana [UNESP]
dc.contributor.authorCrusciol, Carlos Alexandre Costa [UNESP]
dc.contributor.authorFernandes, Adalton Mazetti [UNESP]
dc.contributor.authorZanotto, Maurício Dutra [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-29T02:56:08Z
dc.date.available2022-04-29T02:56:08Z
dc.date.issued2012-02-01
dc.description.abstractInformation about nutrient extraction and exportation by crops, as well as the periods of highest nutrient demand is important for an adequate fertilization management. However, there are no studies on the nutrient uptake of shortstature hybrid castor bean. Therefore, the purpose of this study was to evaluate nutrient extraction and exportation by short-stature castor bean hybrid Lyra, in the spring-summer and fall-winter growing seasons. The experiments were conducted in the 2005/2006 spring-summer and 2006 fall-winter growing seasons on an Oxisol, in Botucatu, SP, in a randomized block design, with four replications. The plots consisted of plant samplings, which occurred 17, 31, 45, 59, 73, 97 and 120 days after emergence (DAE) in the spring-summer and 17, 31, 45, 59, 80, 100 and 120 DAE in fall-winter growing season. The growth of hybrid Lyra was slow and nutrient uptake lowest between emergence and the beginning of flowering. The period of highest dry matter (DM) accumulation rates and highest nutrient demand were observed 40 to 80 DAE, in both growing seasons. The order of nutrient extraction by the plants in the spring-summer growing season was: N>K>Ca>Mg>S>P>Fe>Mn>Zn>B>Cu>Mo. In fall-winter, S was more absorbed than Mg. Seed yield was higher in the spring-summer (2.995 kg ha -1), but nutrient extraction and exportation per ton of seed were similar in both growing seasons. Around 58 % of N and 84 % of P, and approximately half of the S and B absorbed throughout the cycle were exported with the seeds. However, most of the other nutrients accumulated in the plants returned to the soil in plant residues.en
dc.description.affiliationCollege of Agricultural Sciences São Paulo State University (UNESP) N and S Agriconsult
dc.description.affiliationDepartment of Crop Science College of Agricultural Sciences São Paulo State University (UNESP), Lageado Experimental Farm, P.O. Box 237, 18610-307. Botucatu, São Paulo
dc.description.affiliationCollege of Agricultural Sciences São Paulo State University (UNESP)
dc.description.affiliationUnespCollege of Agricultural Sciences São Paulo State University (UNESP) N and S Agriconsult
dc.description.affiliationUnespDepartment of Crop Science College of Agricultural Sciences São Paulo State University (UNESP), Lageado Experimental Farm, P.O. Box 237, 18610-307. Botucatu, São Paulo
dc.description.affiliationUnespCollege of Agricultural Sciences São Paulo State University (UNESP)
dc.format.extent113-124
dc.identifier.citationRevista Brasileira de Ciencia do Solo, v. 36, n. 1, p. 113-124, 2012.
dc.identifier.issn0100-0683
dc.identifier.issn1806-9657
dc.identifier.scopus2-s2.0-84859951399
dc.identifier.urihttp://hdl.handle.net/11449/226783
dc.language.isoeng
dc.language.isopor
dc.relation.ispartofRevista Brasileira de Ciencia do Solo
dc.sourceScopus
dc.subjectRicinus communis
dc.subjectSeed yield
dc.subjectUptake curves
dc.subjectUptake rates
dc.titleExtração e exportação de nutrientes pelo híbrido de mamona Lyrapt
dc.title.alternativeNutrient extraction and exportation by castor bean hybrid Lyraen
dc.typeArtigo
dspace.entity.typePublication
unesp.departmentProdução e Melhoramento Vegetal - FCApt

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