Efeito de substratos e preparado homeopático na produção de mudas de rabo de raposa – Harrisia adscendens.

Abstract

The production of cactus seedlings involves a series of decision making due to the diversity and requirement of each species. One of the greatest demands concerns the best substrate to be used so that there are no problems with drainage, nutrition, aeration, anchoring, clod breaks, etc. One of the most used substrates in general in the production of any seedling is that composed of equal values of sandy material, clay material and organic material which is called universal substrate. The search for different compositions around this considered universal has been made due to the cheapness, speed of production and good development of the seedling or often because of the larger, and cheaper, offer of one of the components. The use of homeopathic preparations in the production of seedlings, on the other hand, has become commonplace due to the successes achieved in a natural and low-cost process. Harrisia adscendens is a cactus native to the Brazilian Semiarid region, with few studies on the production of seedlings of the same through seeds. Therefore, a research was carried out involving the use of different substrates: T1 Sand + Clay + Compound (1: 1: 1) T2 Sand + Clay + Compound (2: 0.5: 0.5); T3 Sand + Clay + Compound (0.5: 2: 0.5); T4 Sand + Clay + Compound (0.5: 0.5: 2) and the homeopathic preparation Arnica montana 30CH + Chamomilla 12 CH + Carbo vegetabilis 12 CH giving rise to eight treatments. Four with homeopathic preparation (CPH) and four without homeopathic preparation (SPH). The experiment was carried out in a completely randomized assay in Factorial 8 x 2. The results found denote the superiority of T1 Sand + Clay + Compound (1: 1: 1) especially with association with the homeopathic preparation for the variables root length and weight of green mass of seedlings. These variables, which show greater vigor and consequently better planting of seedlings, either in potting conditions or in field conditions.