The objective of this study was to evaluate the development, the botanical and structural components of Coastcross-1 and Tifton 85 pastures mixed with increasing inclusion of forage peanut (0, 25, 50, 75% occupancy area), submitted to cuts, from August 2011 (planting of pastures) to April 2013 (last period of cut), totaling two years of study. The experimental design was factorial (three factors) distributed in randomized blocks, the factors were cultivars (two), the opportunities area for

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... ing of forage peanut (four) and seasons that showed cuts, with three replications. It was evaluated the forage mass, dry matter accumulation rate, leaf:stem ratio, dead material, other species and forage peanut mass. The percentages of different implanted area with forage peanut did not affect the production parameters of pasture and structural composition of cultivars. The use of 75% of the area planted with forage peanut promoted share of close to 30% of the total mass of legumes. The leaf:stem ratio was higher for cv. Tifton 85 in daily average temperatures milder, in this situation, both cultivars decreased the forage rate accumulation. The increasing percentage of implanted area with forage peanut increased participation of legumes, decreasing the presence of dead material in the pasture, in the second year of evaluation.