Crescimento inicial de Campomanesia xanthocarpa O. Berg sob diferentes composições de substratos

Initial growth of Campomanesia xanthocarpa O. Berg under different substrate compositions. The objective of this study was to evaluate the influence of different compositions of substrates on the initial growth of Campomanesia xanthocarpa and to evaluate the physiological rate. The study was conduct in the city of Dourados - state of Mato Grosso do Sul, Brazil, in the period from January to October 2008. The Campomanesia xanthocarpa was studying under five different substrates (LVd/A/O= Oxisol+coarse sand +Organosuper ® (5:4:1 v/v); LVd/A/C= Oxisol+ coarse sand+ chicken manure (5:4:1 v/v); LVd/A/O²= Oxisol+ coarse sand+Organosuper ® (7:2:1 v/v); LVd/A/C²= Oxisol+ coarse sand+chicken manure (7:2:1 v/v); LVd/ A= Oxisol+ coarse sand (6:4 v/v)) in 7 dm 3 pots and kept in a protected environment with 100% brightness. The substrate consisting of Oxisol + coarse sand provided greater stem diameter (8.29 mm), dry weight of the root, stem and leaf (6.98, 4.49 and 9.06 g / plant, respectively) and increased the physiological indices in the final evaluations, which indicates that this substrate can be used in the development of Campomanesia xanthocarpa.