BRITO, O. R.

BRITO, R. M.

FONSECA, N. S.

MELÉM JUNIOR, N. J.

MELEM JUNIOR, N. J.

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ANSWER OF TWO CARIOCA BEANS CULTIVAR TO THE CHEMICAL ANDORGANIC FERTILIZA TIONBRIT01, O.R., MELÉM JR.2, NJ.; FONSECA3, N.S., BRIT04, R. M.IDepartment of Agronomy - Stale Universily of Londrina (UEL), Londrina-PR, Brazil. Email:osmar@uel.br; 2Embrapa Amapá,Post Graduate Sludenl - (UEL); JIAPAR, Londrina, PR - Brazil; 4Agronomy Graduate Student - UEL.IntroductionThe bean plant (Phaseolus vuJgaris L.) is cultivated in different regions of the Brazil. It is animportant protein source, especially for smaller budge popu1ations. The brazi1ian dry beanproduction in 2006 was about 3.5 million tons and Paraná state participated with 23.7% of thisproduction (IBGE, 2007). ln Brazil the utilization of urban residues in natura or composed insoil organic fertilization is a frequent agricu1tura1practice. This work was carried out with theobjective to evaluate the effect of the in natura urban residues (the grinding of tree branches) andchemical fertilization, on the components of production and the grain yie1d of two carioca beanscultivar.Material and methodsThe experiment was carried out at the experimental farm of the State University of Londrina,Londrina, Paraná, Brazil. The experimental design was a randomized block with treatmentsdistributed in a 5x2 factorial anangement, which the factors were five doses (O, 15,30,45 and 60Mg ha-I) of urban organic residues (the grinding of tree branches} and two chemical fertilizationlevels (without and with inorganic ferti1ization (80, 50 and 30 kg ha-I of N, P20S and K20,respectively)), with three replications. Two bean cultivar of the Carioca (Colibri and E1dorado)were tested. The evaluated variables were: pods number/p1ant (PNP), grain mass/plant (GMP),the 1000 grains mass (MI000) and grain yield. The obtained datas were submitted to varianceana1yses and the averages were compared by Tukey test at 5% 01' adjusted to regressionequations.Results and discussionThe PNP and GMP medium values of the two carioca beans cu1tivars in the chemicalfertilization treatments were significantly higher than those observed in the treatrnents withoutfertilization. On1y for Eldorado cultivar, the MI000 was influenced by chemical fertilization(Table 1). However, the observed values (230.0 g) were lower than regional average (IAPAR,2007).Table 1. Pods number/plant (PNP), grain mass/plant (GMP) and 1000 grain mass (MI000) forColibri and Eldorado beans cultivar in function to chemical fertilization.Colibri EldoradoWith fert. Without fert. With fert. Without fert.PNP 9.8 a 6.5 b 9.3 a 5.5 bGMP (g) 9.6 a 6.1 b 6.6 a 3.4 bMI000 (g) n.S n.s 186.0 a 167.0 bAverages followed by lhe same lelter in the lines for eaco cultivar, do not differ by Tukey test at 5%.Variables256BiBLl( lECAObra p~10n~'1t~ aQ 8cervoThe grain yield of the Eldorado cultivar was significantly influenced by chemical and organicresidue fertilizations. lu the absence of chemical fertilization, the grain yield reduced with theincrease of the residues doses (y = 2686.5 - 86.621x +1,129 x2, ? = 0,88 and minimum grainyield in 38,5 Mg ha-I).lu the treatments with chemical fertilization, the significant effects (p <0,05) were observed onlyfor residue doses which was above than 15 Mg ha -I, however for alI the treatments the grainyield were below ofthe regional average of2948 kg ha-I (IAPAR, 2007).Except for grain yield of Eldorado cultivar, the organic residues did not affect the values of theother studied variables. The highest values were observed to treatments with chemicalfertilization. These results are in agreement with those obtained by Andrade et aI. (2005).Only for the Colibri cultivar, were obtained significant and positive correlation among thevariables PNP and GMP and the grain yield (r=0,75 and r=0,79, respectively).Conc1usionsThe fertilization with organic residues reduced the grain yield of Eldorado bean cultivar, but didnot have a significant effect on the Colibri bean cultivarThe highest values for grain yield, pods number per plant and grain mass per plant were obtainedfor the Colibri bean cultivar when inorganic fertilizer was used.ReferencesANDRADE. C. A. B.;FONTES, p.eR.; CARNElRO, J. E.S.; CARDOSO, A.A ..In:Congresso Nacional de Pesquisade Feijão, 8, 2005 Goiânia, GO, : Anais ... Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2005. v. 1. ;(Documentos 1Embrapa Arroz e Feijão, 182). p . 983-986IAPAR. Cultivar de feijão IPR Colibri: gl'llpo carioca, ciclo precoce, porte ereto. rAPAR: Londrina, 2004.rAPAR. Cultivar de feijão IPR Eldorado. IAPAR: Londrina, 2007.IEGE. Levantamento sistemático da produção agrícola. Disponible: <http://www.ibge.gov.br/home/estatistica/indicadores/agropecuaria/lspa/lspa 20080 I 4.shtm > Acessed: 28/02/2008257

Answer of two carioca beans cultivar to the chemical and organic fertilization.

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Answer of two carioca beans cultivar to the chemical and organic fertilization.

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