Increase of nitrogen-use efficiency by phosphorus fertilization in grass-legume pastures

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dc.contributor.authorFrancisquini Junior, Amarildo
dc.contributor.authorCalonego, Juliano Carlos [UNESP]
dc.contributor.authorRosolem, Ciro Antonio [UNESP]
dc.contributor.authorSantos, Carlos Henrique dos
dc.contributor.authorTiritan, Carlos Sergio
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2021-06-25T12:19:00Z
dc.date.available2021-06-25T12:19:00Z
dc.date.issued2020-09-11
dc.description.abstractForage legumes intercropped with grasses add nitrogen (N) to the production system and may increase forage yields. However, both phosphate fertilization and the solubility of phosphorus (P) sources may affect this contribution. This study aimed to evaluate the response of Guinea grass (Panicum maximum) intercropped with legumes and fertilized with phosphate fertilizers of different solubility. Guinea grass was grown as a single crop, fertilized or not with mineral N, and intercropped with Java (Macrotyloma axillare), or dwarf pigeon pea (Cajanus cajan); phosphorus was applied as triple superphosphate (P-TSP) or Bayovar (P-Bay), plus a control without phosphorus. The highest forage yield and N accumulation was observed in Guinea grass fertilized with N and P, with 70,364 and 60,036 kg ha(-1)of dry matter, resulting in 977 and 1004 kg ha(-1)of N accumulated by the plants for P-TSP and P-Bay, respectively. The introduction of legumes increased the N accumulation but decreased yield of Guinea grass. The highest nitrogen use efficiency (NUE) was found with P fertilization, i.e., 56% and 54% for P-TSP and P-Bay, respectively. The use of legumes intercropped with Guinea does not improve the effectiveness of the reactive rock phosphate. Therefore, the introduction of legumes intercropping with Guinea grass may be an alternative to N fertilization only when P is not applied to low fertile soils. Broadcast and incorporated P fertilization by the time of Guinea grass sowing, not only increases forage yields but also results in higher NUE regardless of P fertilizer solubility.en
dc.description.affiliationWestern Sao Paulo Univ, Ctr Agr Sci, Raposo Tavares Rd,Km 572, BR-19067175 Presidente Prudente, SP, Brazil
dc.description.affiliationSao Paulo State Univ, Coll Agr Sci, Dept Crop Sci, Univ Ave 3780, BR-18610034 Botucatu, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Coll Agr Sci, Dept Crop Sci, Univ Ave 3780, BR-18610034 Botucatu, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipBrazil by FAPEG-Goias Research Foundation
dc.description.sponsorshipBrazil by FAPEMA-Maranhao Research Foundation
dc.description.sponsorshipUnited Kingdom by BBSRC/Newton Fund
dc.description.sponsorshipAgrisus Foundation - Sustainable Agriculture
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 2015/50305-8
dc.description.sponsorshipIdBrazil by FAPEG-Goias Research Foundation: 2015-10267001479
dc.description.sponsorshipIdBrazil by FAPEMA-Maranhao Research Foundation: RCUK-02771/16
dc.description.sponsorshipIdUnited Kingdom by BBSRC/Newton Fund: BB/N013201/1
dc.description.sponsorshipIdAgrisus Foundation - Sustainable Agriculture: PA 1316/14
dc.format.extent165-175
dc.identifierhttp://dx.doi.org/10.1007/s10705-020-10091-9
dc.identifier.citationNutrient Cycling In Agroecosystems. Dordrecht: Springer, v. 118, n. 2, p. 165-175, 2020.
dc.identifier.doi10.1007/s10705-020-10091-9
dc.identifier.issn1385-1314
dc.identifier.lattes5720775873259528
dc.identifier.orcid0000-0003-2001-0874
dc.identifier.urihttp://hdl.handle.net/11449/209449
dc.identifier.wosWOS:000568465500001
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofNutrient Cycling In Agroecosystems
dc.sourceWeb of Science
dc.subjectPhosphate sources
dc.subjectIntercropped pasture
dc.subjectPanicum maximum
dc.subjectCajanus cajan
dc.subjectMacrotyloma axillare
dc.titleIncrease of nitrogen-use efficiency by phosphorus fertilization in grass-legume pasturesen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
unesp.author.lattes5720775873259528[3]
unesp.author.orcid0000-0003-2001-0874[3]
unesp.departmentProdução e Melhoramento Vegetal - FCApt

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Botucatu - FCA - Faculdade de Ciências Agronômicas