Production of annual ryegrass with different doses of nitrogen fertilization in topdressing.

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dc.contributorDELVACIR REZENDE BOLKE, IFSUL
dc.contributorIONE MARIA PEREIRA HAYGERT-VELHO, UFSM
dc.contributorLUIZ CARLOS TIMM, UFSM
dc.contributorDILETA REGINA MORO ALESSIO, UNIVERSIDADE DO ESTADO DE SANTA CATARINA
dc.contributorANDREA MITTELMANN, CNPGL
dc.contributorOTONIEL GETER LAUZ FERREIRA, UFPEL
dc.contributorLUÍS HENRIQUE CORTEZE LIMA, UFSM
dc.contributorJOÃO PEDRO VELHO, UFSM.
dc.creatorBOLKE, D. R.
dc.creatorHAYGERT-VELHO, I. M. P.
dc.creatorTIMM, L. C.
dc.creatorALESSIO, D. R. M.
dc.creatorMITTELMANN, A.
dc.creatorFERREIRA, O. G. L.
dc.creatorLIMA, L. H. C.
dc.creatorVELHO, J. P.
dc.date2019-12-30T18:10:48Z
dc.date2019-12-30T18:10:48Z
dc.date2019-12-30
dc.date2019
dc.date2020-02-10T11:11:11Z
dc.date.accessioned2026-07-07T03:47:30Z
dc.descriptionThe objective of this study was to assess the growth of annual ryegrass (Lolium multiflorum) cv. BRS Ponteio with different doses of nitrogen applied in the pasture, thereby adjusting their growth to the exponential growth model. A randomized block design was used with five nitrogen application rates (0, 150, 250, 350, and 450 kg N ha-1) and four replicates, applied in installments. Each plot measured 9 m2 . On April 15, 2014, 25 kg ha-1 of viable pure seeds of annual ryegrass were sown at a depth of 0.02 m, in 18 rows spaced at 0.17 m in each plot. Growth in the control treatment (zero nitrogen) pasture lasted 167 days with only three cuts, whereas in pastures treated with 350 and 450 kg N ha-1, growth was extended for an additional 45 days with a 333% increase in the number of cuts. The pastures were used for the same duration (188 days) in the treatments with 150 and 250 kg N ha-1, however, increased nitrogen resulted in two additional cuts and a shorter time interval between cuts. The time interval between each cut and the degree-days interacted dynamically causing distinct growth. Growth of the annual ryegrass BRS Ponteio without nitrogen application is poor and cannot be represented even by a first order linear model. The application of nitrogen topdressing, in the form of urea, decreases the time interval between cuts, increases the dry matter production per hectare, stimulates this production, and follows the exponential growth model.
dc.identifierSemina: Ciências Agrárias, v. 40, n. 3, p. 1329-1338, 2019.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1117860
dc.identifierhttps://doi.org/10.5433/1679-0359.2019v40n3p1329
dc.identifier.urihttp://hdl.handle.net/123456789/442979
dc.languageeng
dc.rightsopenAccess
dc.subjectExponential growth model
dc.subjectDegree-days
dc.subjectDry matter
dc.subjectThermal sum
dc.subjectRate of accumulation
dc.subjectUrea
dc.titleProduction of annual ryegrass with different doses of nitrogen fertilization in topdressing.
dc.typeArtigo de periódico

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