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The purpose of this research was to assess the effect of bovine liquid manure levels and its residual effect on the yield and agronomic characteristics of 'Marandu' grass grown in Entisol, as well as to analyze the chemical characteristics of this soil. The following parameters were evaluated for two years: yield; leaf, stem and dead material percentage; and leaf:stem ratio. The cultivation growth rate (CGR) was estimated. The following aspects of the soil were evaluated: organic matter contents, calcium, magnesium and available phosphorus, aluminum, pH, base saturation and aluminum saturation, in four depths (0-10, 10-20, 20-30 and 30-40 cm). Four liquid bovine manure levels (0, 37.5, 75, 112.5 m³ ha -1 ) were applied in a completely randomized block design, with four replicates. The slurry doses did not increase calcium, magnesium, phosphorus and base saturation in the 0-10 cm layer; however, these values were higher than in the other layers due to liming. pH was reduced with increasing slurry levels at all depths, while aluminum content reduced in the 0-10 cm layer and increased in the other layers. The level of base saturation decreased with increasing slurry levels in all layers, except for the 0-10 cm layer. The magnesium content was reduced in the 10-20 cm layer, but increased in the 30-40 cm, while the organic matter content followed a quadratic function. Yield levels have increased and leaf, stem, leaf:stem ratio, dead leaves and CGR were influenced by the time and levels of bovine liquid manure applied.

Produtividade do capim-marandu e alterações químicas do solo submetido a doses de dejetos líquidos de bovinos