Maximizing the efficiency of existing production systems and reducing the intake of external inputs and production costs is the principle of modern farming and livestock production. In this context, the aim of this study was to evaluate the influence of organic and mineral fertilization on dry mass (DM) development and production of the consortium of black oat (Avena strigosa Schreb.) and ryegrass (Lolium multiflorum Lam.). The experiment was arranged in a randomized block design, with four replications, with the following treatments: without fertilization, mineral fertilization only, organic and mineral fertilization (50% mineral and 50% organic) and organic fertilization only. The experiment was conducted from May 15 to September 28, 2010. Three evaluations were performed in this period, using cuttings to estimate the DM production and recording the number of leaves, tillers and length of aerial part of plants of each species weekly. The effect of the treatments on the number of tillers, number of leaves and length of aerial part was significant only in the first evaluation. DM of black oat was higher in the first cutting and declined thereafter, due to its early cycle. Ryegrass obtained high production only in the last period, because of characteristics of its cycle. The total DM obtained in the three periods indicated that the dairy manure provides production similar to mineral fertilization. The same performance was obtained for the morphogenic characteristics evaluated, which differed from the control.
Avena strigosa (Schreb.); bovine waste; Lolium multiflorum (Lam.); forage production
