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      Potencial forrageiro de cultivares de girassol produzidos na safrinha para ensilagem Translated title: Forage potential of sunflower cultivars produced in double-cropping system for silage

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          Abstract

          Avaliaram-se algumas características agronômicas relevantes de 12 híbridos e uma variedade de girassol (Helianthus annuus L.), participantes do ensaio nacional de girassol, no ano agrícola 1996/97, destinados à produção de silagem. O experimento foi conduzido de fevereiro a junho, utilizando-se delineamento experimental de blocos ao acaso e comparação das médias pelo teste Student-Newman-Keuls. Foram obtidas diferenças significativas entre os híbridos para as produções de matéria verde e de matéria seca, porcentagens de folha, de caule e de capítulo, circunferência do caule próximo ao capítulo, porcentagem de plantas quebradas e altura das plantas. Não foram encontradas diferenças significativas para circunferência do caule próximo ao solo, diâmetro do capítulo e porcentagem de plantas acamadas. As características agronômicas avaliadas indicaram que alguns híbridos de girassol apresentam potencial para serem utilizadas como recurso forrageiro para a produção de silagem na safrinha, ou durante o período seco do ano.

          Translated abstract

          The objective of this study was to evaluate some important agronomic traits for silage production of 12 hybrids and a variety of sunflower (Helianthus annuus L.) participant of the national assay of sunflower, in the agricultural year of 1996/97. The experiment was conducted from February to June 1997. The experimental procedure followed a randomized block design and the means values were compared by Student-Newman-Keuls test. Significant differences among hybrids for fresh and dry matter productions, leaf, head and stem percentages, stem's circumference close the head, broken plants percentage and height of the plants were observed. No significant differences among hybrids for stem's circumference close the ground, diameter of the head and laying plants percentage were found. The agronomic traits indicated that some hybrids of sunflower present potential to be used for silage production in double-cropping system, or during the drought.

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                abmvz
                Arquivo Brasileiro de Medicina Veterinária e Zootecnia
                Arq. Bras. Med. Vet. Zootec.
                Universidade Federal de Minas Gerais, Escola de Veterinária (Belo Horizonte )
                1678-4162
                December 2003
                : 55
                : 6
                : 756-762
                Affiliations
                [1 ] Embrapa Pantanal Brazil
                [2 ] Embrapa Milho e Sorgo Brazil
                [3 ] Universidade Federal de Minas Gerais Brazil
                [4 ] Universidade Federal de Minas Gerais Brazil
                Article
                S0102-09352003000600013
                10.1590/S0102-09352003000600013
                1f554add-4db3-4024-b137-cc905e0cc275

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0102-0935&lng=en
                Categories
                VETERINARY SCIENCES

                General veterinary medicine
                sunflower,Helianthus annuus,agronomic traits,productivity,girassol,características agronômicas,produtividade

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