Desenvolvimento inicial de mudas de acerola (malpighia punicifolia l.) cultivadas e irrigadas com diferentes tipos de águas.

Abstract

The objective of this work was to evaluate the reuse of water (agro-industrial and air-conditioning effluent) and water wells, using them as irrigation (in mixtures with predefined proportions) and its viability in the development of seedlings of Aceroleira. The research was developed at the Instituto Federal da Paraíba (IFPB) [Federal Institute of Paraiba], Campus Sousa. A randomized-complete blocks design with five treatments and four replications was used. The treatments resulted from the following combinations: T1 = 100% Artesian well (AW), T2 = 100% air conditioning (AC), T3 = combination 50% air conditioning + 50% Artesian well (AC+AW), T4 = combination 50% Agroindustrial effluent + 50% air conditioning (AE+AC) and T5 = 100% Agroindustrial Effluent (AE). The aceroleira seedlings were produced in polystyrene bags, using Neossolo Flúvico and cattle manure in proportion (2:1) as substrate. The following variables were evaluated: plant height (PH) number of leaves (NL), stem diameter (SD), aerial part green Mass (APGM), aerial part dry mass (APDM), root green mass (RGM), root dry mass (RDM), root length (RL) and influence on soil attributes such as the potential of hydrogenionic (pH), phosphorus (P), potassium (K+), sodium (Na+), calcium (Ca+2), magnesium (Mg+2), sum of bases (SB) and percentage of exchangeable sodium (PES). The T4 treatment is a viable alternative for irrigation of aceroleira seedlings. There was induction in the increase in soil salinity on the part of the treatments, with lower intensity for sodium and PES irrigated with water of the air conditioning systems. Key-words: