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Ciência Rural

Print version ISSN 0103-8478

Abstract

TRAVI, Magdalena Reschke Lajús et al. Morphogenesis of carpet grass in response to pig slurry fertilization. Cienc. Rural [online]. 2014, vol.44, n.3, pp.461-466. ISSN 0103-8478.  http://dx.doi.org/10.1590/S0103-84782014000300012.

This study aimed to evaluate the morphogenesis of carpet grass fertilized for two years with pig slurry (PS). On the average of two years were applied 0, 51, 102, 153, 204 and 255m3 of PS ha-1, calculated to provide 0, 100, 200, 300, 400 and 500kg of N ha-1 year-1, respectively. The morphogenesis was evaluated in the spring and summer of 2008-2009 and 2009-2010, considering 10°C as threshold temperature to evaluate the thermal sum in degree-days (DD) between the samplings. The fertilization linearly increased the tiller number, tiller elongation rate, leaf elongation rate and leaf area index. There was no effect of the fertilization on pseudoculm elongation rate (0.004cm DD-1), leaf appearance rate (0.004 leaf tiller-1 DD-1) and phyllochron (274DD).

Keywords : Axonopus affinis Chase; leaf elongation rate; organic fertilization; phyllochron; tillers.

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