Crescimento de mudas de pupunheira (Bactris gasipaes) transplantadas em diferentes estádios de plântula, substratos e volume de substrato

Abstract

The Amazonas State Commission of Seeds and Seedlings established norms and standards for the production of certified seedlings, but for peach palm seedlings they are poorly defined due to lack of specific studies. The objective of this study was to investigate the development of seedlings transplanted at different seedling stages (before appearance of leaves, one leaf and two leaves), substrate type (surface soil and surface soil + chicken manure 3: 1 v: v), and substrate volume (0.5, 1 and 2 kg bags), in Manaus, AM, Brazil. The seeds were from spineless Yurimaguas, Peru, plants, collected in March 1997. The experimental design was a randomized blocks, with a 2x3x3 factorial, with four replications. The seedlings fertilized with chicken manure presented better growth in height (19 cm) than those in surface soil (8 cm) at six months. Seedlings with one leaf had greater development (15 cm), followed by seedlings without leaves (14 cm) or with two leaves (12 cm). Seedlings in bags with one (14.5 cm) and two (15 cm) kg capacities presented better growth than these in bags with 0.5 kg (11 cm). Therefore, peach palm seedlings should be transplanted at the one leaf seedling stage into bags with one kg of soil plus chicken manure.