Substrato no enraizamento de estacas de acelora

Abstract

Acerola (Malpighia emarginata) is a fruit species from the Malpighiaceae family, with great economic potential. In the case of sexual propagation, the seeds have a low germination power of around 15% to 30%, which means that some grafting methods or even cuttings are used for their propagation. Different substrates were evaluated for rooting acerola cuttings. Herbaceous cherry cuttings, obtained from young non-lignified branches, and prepared so as to contain two nodes and a pair of leaves in the upper node will be used as propagules in the experiment. After preparation, the cuttings will be immediately placed for rooting in mini-greenhouses covered with transparent cellophane, in an experimental design in randomized blocks, with six treatments with the substrates, cattle manure with sand, Bioplant with sand and humus with sand, natufertil with sand, black pepper munha with sand and pure sand, each with 10 cuttings of the crop. The mini-greenhouses will be made up of wooden boxes measuring 0.5 x 0.5 x 0.5 meters and irrigated with nebulizers. One hundred and twenty days after staking, the following variables will be evaluated: survival of cuttings (Se), number of leaves (NF); Number of shoots (NB); length of the largest shoot (CB); root length (CR); root volume (VR); shoot green mass (MVA); shoot dry mass (MSA), green root mass (MVR); root dry mass (MSR). Observing the survival table (SOB), we can highlight the Sand+Cattle Manure treatment that performed better than other treatments, and these results may be linked to some particularities of cattle manure, which are: reducing nitrogen loss, retaining nutrients, in addition to being considered a great source of npk, followed by the Sand+humus treatment. The substrate composed of Sand+Cattle manure showed the best results for rooting and development of acerola tree cuttings, and can be recommended as a substrate for the production of seedlings from cuttings of this fruit tree.