Sweet potato yield and quality as a function of phosphorus fertilization in different soils

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dc.contributor.authorCordeiro, Carlos F. Dos S. [UNESP]
dc.contributor.authorEcher, Fábio R. [UNESP]
dc.contributor.authorBatista, Guilherme D. [UNESP]
dc.contributor.authorFernandes, Adalton M. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-07-29T13:48:15Z
dc.date.available2023-07-29T13:48:15Z
dc.date.issued2023-01-01
dc.description.abstractPhosphorus (P) is an essential nutrient for growth and yield of sweet potatoes; in sandy soils, sweet potato yield and quality may be limited by application of low P doses, mainly in degraded areas. The objective of this work was to evaluate the effect of P doses on yield and quality of sweet potato root tubers grown in tropical sandy soils with different initial P availabilities: 23.2 mg dm-3 (high P-crop rotation) and 3.7 mg dm-3 (low P-post degraded pasture). Two experiments were carried out in a randomized block design, with four replicates. The treatments consisted of P doses (0, 22, 44, 88, and 176 kg ha-1) applied to the planting bed. Tuber yield, number and mean weight of tubers, P concentration in leaves and tubers, exported P, as well as the percentage of starch, reducing sugars, total sugars, and sucrose in the tubers were evaluated. P concentration in the soil was evaluated at the end of the experiment. In the area with high P availability (> 20 mg dm-3-resin), increasing P doses did not increase root tuber yield and decreased root starch concentrations. In the area with low P availability (< 3.7 mg dm-3-resin), root tuber yield and starch concentration peaked when applying 68 and 33 kg ha-1 of P, respectively. In areas after degraded pasture, with low initial soil P concentration, P fertilization for sweet potato crops should be carried out with a P dose of 68 kg ha-1. In areas with crop rotation and adequate soil P concentration, P fertilization should be carried out to replace the amount of P exported by the harvested root tubers to avoid decreases in soil fertility.en
dc.description.affiliationUniversidade Estadual Paulista Departamento de Produção e Melhoramento Vegetal, SP
dc.description.affiliationUniversidade Estadual Paulista “Júlio de Mesquita Filho” Centro de Raízes e Amidos Tropicais, SP
dc.description.affiliationUnespUniversidade Estadual Paulista Departamento de Produção e Melhoramento Vegetal, SP
dc.description.affiliationUnespUniversidade Estadual Paulista “Júlio de Mesquita Filho” Centro de Raízes e Amidos Tropicais, SP
dc.format.extent487-495
dc.identifierhttp://dx.doi.org/10.1590/1807-1929/AGRIAMBI.V27N6P487-495
dc.identifier.citationRevista Brasileira de Engenharia Agricola e Ambiental, v. 27, n. 6, p. 487-495, 2023.
dc.identifier.doi10.1590/1807-1929/AGRIAMBI.V27N6P487-495
dc.identifier.issn1807-1929
dc.identifier.issn1415-4366
dc.identifier.scopus2-s2.0-85151136440
dc.identifier.urihttp://hdl.handle.net/11449/248592
dc.language.isoeng
dc.relation.ispartofRevista Brasileira de Engenharia Agricola e Ambiental
dc.sourceScopus
dc.subjectdegraded pasture
dc.subjectIpomoea batatas (L.) Lam
dc.subjectreducing sugars
dc.subjectsandy soil
dc.subjectstarch
dc.titleSweet potato yield and quality as a function of phosphorus fertilization in different soilsen
dc.titleProdutividade e qualidade da batata-doce em função da adubação fosfatada em diferentes solospt
dc.typeArtigo

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Botucatu - CERAT - Centro de Raízes e Amidos Tropicais