Tamanho da muda na produção e qualidade dos frutos de Maracujazeiro cv. Redondo Amarelo

Abstract

The search for a quality fruit without residues of pesticides, preserving the environment has been a constant. For this result, some alternatives have been tested by research and in most of them the change is considered as the most important component. Thus, the aim of this research is to study the feasibility of using seedlings in the formation of larger orchards Passionflower cv. Yellow round. The experiment was conducted between June 2010 and May 2011, the Division of Fruit Crops, Department of Agriculture, Federal University of Lavras-UFLA. For seedling were used seeds of passion fruit cv. Yellow round. The seeds were sown at intervals of 25 (twenty five) days for each treatment, the substrate used for filling polyethylene plastic bags (18 x 30 cm) with a capacity of eight (8) kg was (soil + sand + manure in ratio 1:1:1). After filling the bags, they were taken to a greenhouse with 50% shade. The experimental design was randomized blocks (DBC), with five treatments (0.30 m, 0.70 m, 1.10 m, 1.50 m and 1.90 m tall seedlings) with four replications and four plants per plot for a total of eighty (80) plants. All plants were taken to the field at the same time. The support system was used trellis, fence posts with two (2) feet tall with a wire at a spacing of 5x3m, no irrigation and no preventive or curative chemical control of pests and diseases. The variables analyzed were: number of flowers and fruits per plant, fruit weight (g) longitudinal and transverse diameter of the fruit (mm) thick ¬ ness of the shell (mm), shell percentage, juice and seed (%) total soluble solids (º Brix), titratable acidity (% citric acid), hydrogen potential (pH). The start of production occurred in March 2011. The use of plants with larger (1.50 and 1.90 m) showed satisfactory results for the characteristics evaluated with a viable use. Plants from plants with smaller sized 0.30 and 0.70 m showed low productivity with smaller berries and lower juice yield.