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IRRIGACAO DE CULTIVARES DE RABANETE EM DIFERENTES EPOCAS DE CULTIVO NO NORDESTE SUL-MATO-GROSSENSE FERNANDO FRANCA DA CUNHA 1 ; MARCO AURELIO DE CASTRO 2 ; AMANDA REGINA GODOY 3 ; FERNANDO FAGNER MAGALHAES 2 E AGUINALDO JOSE FREITAS LEAL 2 1 Departamento de Engenharia Agricola, Universidade Federal de Vicosa, UFV, Avenida Peter Henry Rolfs, s/n, Campus Universitario, 36570-000, Vicosa, MG, Brasil. fernando.cunha@ufv.br 2 Programa de Pos-Graduacao em Agronomia, Universidade Federal de Mato Grosso do Sul, UFMS, Rodovia MS 306, km 105, Zona Rural, 79560-000, Chapadao do Sul, MS, Brasil. falecomarco@yahoo.com.br; magalhaes.fernandof@gmail.com, aguinaldo.leal@ufms.br 3 Departamento de Fitotecnia, Universidade Estadual de Ponta Grossa, UEPG, Avenida Carlos Cavalcanti, 4748, Uvaranas, 84030-900, Ponta Grossa, PR, Brasil. amandagodoy@uepg.br 1 RESUMO O maximo potencial produtivo das cultivares de rabanete e a qualidade das raizes estao diretamente relacionados a disponibilidade hidrica no solo. Objetivou-se com o presente trabalho avaliar a producao de cultivares de rabanete sob distintas lâminas de irrigacao em diferentes epocas de cultivo no Nordeste Sul-Mato-Grossense. O experimento foi montado e analisado em parcelas sub-subdivididas, possuindo quatro lâminas de agua (50, 75, 100 e 125% da evapotranspiracao da cultura) nas parcelas, tres cultivares de rabanete (Saxa, Sparkler e Cometa) nas subparcelas e duas epocas de cultivo (seca e chuvosa) nas sub-subparcelas, com quatro repeticoes no delineamento em blocos casualizados. Foram avaliados: comprimento e diâmetro de raiz, numero de raizes comerciais e rachadas, massa total de raizes e massa comercial de raizes, massa fresca e seca da parte aerea, relacao raiz/parte aerea e eficiencia de uso da agua. As lâminas de irrigacao proporcionaram nas caracteristicas avaliadas efeito linear na epoca seca e nao conferiram efeito na epoca chuvosa. O rabanete Cometa deve ser preferido no nordeste Sul-Mato-Grossense e irrigado com reposicoes que atendam 125 e 50% da evapotranspiracao da cultura, nas epocas seca e chuvosa, respectivamente. Palavras-chave: Cerrado brasileiro, olericultura, lâminas de irrigacao, Raphanus sativus . CUNHA, F. F. DA; CASTRO, M. A. DE; GODOY, A. R.; MAGALHAES, F. F.; E LEAL, A. J. F. IRRIGATION OF RADISH CULTIVARS IN DIFFERENT CROPPING SEASONS IN THE NORTHEASTERN REGION OF MATO GROSSO DO SUL, BRAZIL 2 ABSTRACT The maximum productive potential of radish cultivars and root quality are directly related to water availability in the soil. The study aimed to evaluate the production of distinct radish cultivars submitted to distinct irrigation depths at distinct cropping seasons in the northeastern region of the State of Mato Grosso do Sul, Brazil. The experiment was installed and analyzed in a split plot design, presented in four irrigation depths (50%, 75%, 100% and 125% of crop evapotranspiration) in the plots, three radish varieties (Saxa, Sparkler and Cometa) in the subplots and two cropping seasons (dry and rainy) in the sub-subplots, in the randomized block scheme with four replications. The following agronomic characteristics were evaluated: root depth, root diameter, commercial root number, cracked root number, weight of total and marketable root, total root yield, commercial root yield, fresh shoot yields, dry shoot yield, root/shoot ratio, and water use efficiency. There was better performance of the radish in the dry season. The Cometa cultivar, independent of cropping season and irrigation depth, showed superior agronomic characteristics than other cultivars evaluated. The irrigation depths, in general, provided in the evaluated characteristics linear outcome in the dry season and did not confer effect in the rainy season. The Cometa radish cultivar should be chosen by producers from northeastern Mato Grosso do Sul, in Brazil, and irrigated with replacements of 125% and 50% on the crop evapotranspiration, in the dry and rainy seasons, respectively. Keywords: Brazilian cerrado, olericulture, irrigation depths, Raphanus sativus .

IRRIGAÇÃO DE CULTIVARES DE RABANETE EM DIFERENTES ÉPOCAS DE CULTIVO NO NORDESTE SUL-MATO-GROSSENSE