PRODUÇÃO ORGÂNICA DE MUDAS DE COUVE-MANTEIGA EM SUBSTRATOS À BASE DE COPROLITO DE MINHOCAS

Abstract

The obtaining of seedlings of high quality in organic agriculture still represents a challenge, especially with relationship to the concentration of nutrients and the physical properties of the substrate. The objective this research was evaluated effect of cast earthworm as organic component of substrate for production of collard greens-butter seedlings. Two experiments were installed in greenhouse in the Universidade Federal do Acre, both in design completely randomized with eleven treatments and eight replications. The treatments were obtained through of mixtures of different cast earthworm concentrations (0, 10, 20, 30, 40, 50, 60, 70, 80, 90 e 100%) and soil, being dystrophic (V = 29 %) in the experiment I e eutrophic (V = 80 %) in the experiment II. To the 26 days after the sowing was evaluated the height of the plant and dry weight matter masses of shoot, root and total plant. The results of the experiment 1 indicated that addition of cast earthome to soils distrophic increases the growth of the plants, in concentrations greater 70 %. However the results of the experiment 2 indicated that addition of cast earthome in eutrophics soils result in benefits effects for plants only in few quaintly, promoted growth maximum in the concentrations around of 20 %. The results of both experiments indicate that the effect of the cast earthworm as component of substrates was of increasing the growth of collard greens-butter seedlings when the chemical condition of the cast earthworm goes better than the one of the soil in supplying nutritious for the plants.