Phosphorus fertilization in the implantation of a silvopastoral system: morphogenic and structural characteristics of Mombaça grass

ABSTRACT The objective of this study was to evaluate the effect phosphate fertilization on morphogenic and structural characteristics Mombasa grass under conditions implantation silvopastoral system with eucalyptus monoculture in Amazon/Cerrado ecotone. experiment conducted at UFT-EMVZ during rainy seasons 2016/2017 2017/2018 agricultural years. experimental area subdivided into two cultivation systems, Mombaça monoculture, 0.25 hectare system, intercropping grass, 0.75 area. design used a 4 x 2 factorial IHD four doses phosphorus (0; 50; 100; 200 kg.ha -1 P2O5 year-1) systems (monoculture silvopastoral) three repetitions. Three cycles were evaluated for an average rest period 21 days. Weekly measurements taken plants. In general, factors tested such as fertilization, year (implantation following year) showed influence, altering development reflecting characteristics. Tiller population density, crop growth rate, leaf index interactions between analyzed (P <0.05). Phosphorus implantation, moment greatest requirement plant, influenced forage by increasing appearance, well stem elongation systems.