Fosfatagem e Calagem no desenvolvimento do capim mombaça

The work's aim was to verify the interaction between cathe and phosphating at different depths in the mombasa grass growth in order to obtain better management of these products in order to have an adequate recommendation. The experiment was conducted in the agrostological field located in the experimental area of the State University of Mato Grosso do Sul - University Unit of Aquidauana. The design was completely randomized, with three replications, arranged in a factorial scheme 4 x 5, with 4 base saturations (V = 40 %, 50 %, 60 % and without plowing) and 5 depths of Bonito natural phosphate (without phosphate, phosphate on the surface, 10, 20 and 30 cm), totaling 54 experimental units. The soil used for the experiment had 23,30 % base saturation. From the aerial part, leaf length, leaf width and number of byums were evaluated, in addition to total dry mass production (MST), stem mass (COL), leaf mass (FOL), dead material mass (MM) and leaf:stem (F/C) ratio. In relation to the roots, root length (RAI) and total dry mass were observed. The correction of base saturation to 40% provides the best results of CF, LF and NP, regardless of the depth of phosphorus application. The depth of phosphorus application doesn't alter the variables CR, MM, RAI, FOL, COL and F/C. The depth of phosphorus application, in the absence of cathe, interfered in the CF, LF and NP. Phosphate fertilization is recommended for regardless of depth of application.