Características morfológicas e produtivas do capim Mombaça submetido ou não a aplicação de Lithothamnium calcareum e doses de fósforo

Abstract

As in most Brazilian soils, Amazonian soils have low amounts of P, and there is a need for alternatives that optimize the uptake of this element by plants, one of these alternatives is the use of potentiated associated with mineral P fertilization. with this present work to study lithothamnium as a conditioner of phosphate fertilization through morphogenic parameters, and to verify the interaction of lithothamnium with soil and forage in different periods of the year in Pará. sub-divided plot, with effect on time, with the presence or absence of lithotamnium in the plot, in the sub-plot, as doses of phosphorus (60, 80 and 100 Kg of P2O5 ha-1) and in the sub-plot, time of year, dry and rainy . The effects of treatments on production and morphology for the parameters TApF, TAlF, TAlC, TSF, FILOC, NFV, DVF and CMLF were not verified. There was a significant mean difference (P <0.05) when observed and analyzed the results referring to the five cycles within a productive year in different climatic periods. There was a significant mean difference (P <0.05) when observed and analyzed the results referring to the five cycles within a productive year in different climatic periods. The application of lithotamnium did not influence the effect of P doses, factors such as the formation of labile and non-labile P lead to the performance of P doses and, consequently, the performance of the product, the presence of pluviometric indexes distributed in different climatic periods influenced by parameters morphogenic and production.