EFFECT OF PHOSPHORUS FERTILIZATION ON GROWTH OF AÇOITA-CAVALO (Luehea divaricata Mart.) SEEDLINGS

Main Article Content

Denise Ester Ceconi
Igor Poletto
Eleandro José Brun
Thomé Lovato

Abstract

This experiment was conducted to study the effects of different phosphorus doses on the growth of Açoita-cavalo seedlings (Luehea divaricata). As substratum, Red Yellow Argisol, collected from a superficial layer (0-20 cm) was used and as additional fertilizers were added 25 mg N kg-1 and 47,5 mg K kg-1, whose sources were CH4N2O and KCl. The experimental design used was completely randomized with 8 treatments and 8 repetitions, totalizing 64 plots, with one plant per plot. The treatments constituted of: control (soil without phosphorus addition), 90, 180, 270, 360, 450, 540 and 630 mg P kg-1 (utilizing CaHPO4 as fertilization). The recipients used were polypropylene vases with the capacity of 2,0 dm3. The humidity of the vases was kept at 80% of the field capacity. The following parameters were evaluated after 120 days: height of the aerial part, stem diameter, biomass above ground, root biomass and total biomass. The 360 mg P kg-1 dose resulted in the best growth of L. divaricata seedlings.

Article Details

Section
Article