Abstract

PIN, Edison Antonio; SOARES, André Brugnara; POSSENTI, Jean Carlo  and  FERRAZZA, Jussara Maria. Forage production dynamics of winter annual grasses sown on different dates. R. Bras. Zootec. [online]. 2011, vol.40, n.3, pp. 509-517. ISSN 1806-9290.  http://dx.doi.org/10.1590/S1516-35982011000300007.

This experiment was carried out from April to September 2008 with the objective of evaluating the forage production dynamics of winter annual grasses (Avena strigosa Schereb cv. IAPAR-61; Lolium multiflorum Lam cv. Comum; Avena strigosa cv. Comum; Avena sativa cv. IPR 126; and Triticum aestivum L cv. BRS Tarumã) on four sowing dates (April 4^th, April 24^th, May 14^th and June 3^rd). A completely randomized blocks with four replications was used. It was evaluated number of days and production at the first cutting, total production, number of cuts and density of plants and tillers. There is a strong interaction among cultivars and sowing dates for all analyzed variables and this indicates opportunities of choosing multiple combinations among cultivar and sowing dates to manipulate forage production aiming at easing forage gaps. The late season oats (IPR 126 and IAPAR 61) present high production and forage distribution capacities, especially if sown until mid-April.

Keywords : annual-ryegrass; black oat; forage budget; forage production; white oat.