Estudos sobre a produção e irrigação dos capins pangola, sempre verde e gordura, durante o ano de 1965
Palavras-chave:
produção forrageira, pastagens irrigadas, temperatura mínima, adubação e irrigação, massa verdeResumo
In a study conducted in Vigosa at the Rural University of the State of Minas Gerais, production was measured on 6x 4,5 m plots of gordura grass (Melinis minutiflora), sempre verde (Panicum maximum), and pangola grass variety A-24 (Digitaria decumbens). Response to high level fertilization and to dry season irrigation was also measured. Gordura grass is the natural and common grass of this region. The site was a hillside of 20% slope having relatively low fertility.
Though all three specieshad given approximately equal vields (18 t/ha) during the rainy summer of early 1965, both gordura and sempre verde statistically out-yielded grass during the following dry season, respectively, 9.1,and 6.4 t/ha averaged over all treatments. This poor response shown by pangola is surprising since this species is usually considered to be a high producer and also moderately drought resistant. Perhaps low winter temperatures are a limiting factor. During the following spring, pangola Tecuperated and with sempre verde showed a significantly higher yield than gordura, 13.3, 12.4 and 9. 2 t/ha respectively.
Periodic ferticizations totalling 45/kg/ha N, 63P 05, and 15 K,0 gave highly significant increases in production for all species. Irrigation during the dry season also gave signifi~ cant increases. DTy season productions averaged over the three species were 5. 4 t/ha for check plots, 6.7 for those receiving irrigation alone, 7.1 for fertilization alone, and 9. 9 for plots both irrigated and fertilized.
Referências
CARO, Ruben e Vicente, José - Grazing experiments show Guinea, Pangola and Napier grass superior to Para or Melasses grass pastures. U.S.Depto. Agr., Res. Service, in cooperation with Agr. Exp. of Univ. of Puerto Rico. Research Note 39, 1961.
HODGES, E. M., Jones,D. W. e Kirk, W. - Grass Pastures in Central Florida University of Florida, Range Cattle Exp. Sta. Bulletin 484, 1951.
McCLOUD, D. E. - Temperature Responses of Some Subtropical Forage Grasses. (Crops Research Division, ARS-USDA, Beltsville, Maryland). Apresentado na conferencia da FAO sobre Pastagens e Forragens, São Paulo, 1963.
PIMENTEL COMES, F. - Curso de Estatística Experimental, ESALQ, Universidade de São Paulo, 1963. 384 p.
QUINN L. R., Mott,G. O., Bisschoff, W. V. A. e Rocha G.L. - Produção de carne em bovinos submetidos a pastoreio em seis gramíneas tropicais IBEC Research Institute. No 28, 1963. 42 p.
TUNDISI, A. I., Dupas, W, e Villares, J. B. - Comportamento dos capins Coloniao e Pangola, na produção de carne, durante a seca de 1961.Secretaria da Agricultura do Estado de São Paulo, Depto. de Produção Animal. Plantas Forrageiras, N 16, 1961.
ZONIGA, M. P., Sykes, D. J. e Gomide, J. A. - Pesquisa sobre capineiras na UREMG, Viçosa, M. G. Folheto No 1/1966, 1966. 6 p.
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