Abstract
The effect of nitrogen levels (0, 40, 80, 120 and 160 mg of N/dm3 of soil) on dry matter (DM) yield, chemical composition and morphogenetic and structural characteristics of Cynodon dactylon cv. Vaquero, was evaluated under greenhouse with natural conditions of light and temperature. The experimental design was a complete randomized blocks, with three replications. Nitrogen fertilization increased linearly DM yields, nitrogen contents, blade length and number of tillers/pot, however decreased significantly phosphorus contents. Maximum leaf appearance and elongation rate, blade length, tiller number and number of live leaves/tiller were obtained with the application of 58.4; 147.3; 149.4; 154.8 and 101.4 mg/dm3 of N, respectively. The nitrogen efficiency utilization was inversely proportional to nitrogen levels, while the apparent recovery of nitrogen was directly proportional to the increased nitrogen levels.
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