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In Bayano, Province of Panama, the grasses Pangola (Digitaria decumbens, Stent), Taner (Brachiaria radicans, Napper), Swazi (Digitaria zwasilandensis, Stent), Signalgrass (Brachiaria decumbens, Stapf) and Stargrass (Cynodon plectostachyus, K. Schum Pilger) were evaluated during one year, in terms of Dry matter production under cutting intervals of 3, 6 and 9 weeks, in a randomized block design with four replicates and a fertilization regime of 100 kg of N, 100 kg of P2O5 and 80 kg of K2O per hectarea per year. Dry matter yield of Signalgrass was significantly (p<.05) higher than in the other species under a three-week cutting interval. Swazigrass yield was superior (p<.05) to Tanner-grass and Pangolagrass yields, while Stargrass produced the lowest yield. Signalgrass was also superior (p<.05) to the other species in the six-week cutting interval. Swazigrass dry matter yield was higher than the yields of Tannergrass and Stargrass, but it did not differ from the yield of Pangolagrass. Stargrass produced the lowest yield. In the nine week cutting interval Swazigrass produced the highest dry matter yield, but it did not differ from the yields obtained by Signalgrass and Pangolagrass. Tannergrass and Stargrass showed the lowest yields. The combined analysis of species by cutting intervals, showed that Signalgrass produced the highest dry matter yield, but it was not significantly (p>.05) different from Swazigrass and Pangolagrass yields. Tannergrass was intermediate in dry matter yield but it did not differ from Pangolagrass and Swazigrass. Stargrass produced the lowest yield. All the grasses tested increased their dry matter yields as the cutting interval was increased. In the cutting intervals of three and six weeks Swazigrass and Pangolagrass produced more forage than the other species during the dry season, but both of them were excelled by Signalgrass in the nine week cutting interval. In the rainy season, Signalgrass and Swazigrass were superior to the other species. It is considered that the species Signalgrass, Swazigrass and Pangolagrass, exhibit a high productive potential to increase milk and beef production in bayano area. 

Bibliographic Details

Main Authors:	Ortega-V., Carlos M., Avila-Z., Miguel A., Mercado, Pablo
Format:	Digital revista
Language:	spa
Published:	Instituto de Innovación Agropecuaria de Panamá 1988
Online Access:	http://www.revistacienciaagropecuaria.ac.pa/index.php/ciencia-agropecuaria/article/view/536
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