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Revista Brasileira de Zootecnia

versão On-line ISSN 1806-9290

Resumo

LIMA, Erico da Silva et al. Dry matter and crude protein production and leaf/stem ratio of elephantgrass genotypes, at 56 days of regrowth. R. Bras. Zootec. [online]. 2007, vol.36, n.5, suppl., pp. 1518-1523. ISSN 1806-9290.  http://dx.doi.org/10.1590/S1516-35982007000700009.

Twelve elephant grass genotypes were evaluated in a randomized block design with three replications. Each experimental plot was formed by four lines with 3 m of length, spaced by 1 m and fertilized with 100 kg of P2O5, 100 kg of N, 60 kg of K2O and 25 kg of micronutrients/ha. Significant differences were observed among the genotypes for forage plant height and dry matter (DM), crude protein (CP) and digestible dry matter (DDM) production/ha. The genotypes CNPGL 92-94-01, CNPGL 92-79-02, CNPGL 91-06-02, CNPGL 94-07-02, CNPGL 94-09-01, BAG 66, CNPGL 93-32-02 and cv. Cameroon presented the largest production of DM, CP, and DDM. There were no significant differences for DM concentration (DM) and leaf/stem ratio (L/S) among the evaluated genotypes. The cluster analyses suggested a group of elephantgrass genotypes with higher DM, CP, and DDM production/ha and other with lower DM, CP, and DDM.

Palavras-chave : dry matter yield; elephantgrass cultivars; intraspecific hybrid; leaf/stem ratio; protein yield.

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