Características agronômicas de ora-pro-nóbis cultivadas em ambientes de luz e adubação orgânica

Abstract

The ora-pro-nóbis (Pereskia aculeata Mill), is an unconventional food plant (PANCs) that has high nutritional potential when compared to other vegetables used in the fermentation. However, it is not integrated as a productive chain itself, different from conventional vegetables. In this sense, research related to production techniques such as knitting and organic fertilization may be extremely important in the production of ora-pro-nóbis. In view of the above, the objective was to evaluate the impact of different combinations of quality and light intensity with the use of colored meshes in the absence and presence of organic fertilization in the growth and content of photosynthetic pigments of plants of ora-pro-nóbis. The study was carried out in a greenhouse located at the Federal University of Recôncavo da Bahia, in the municipality of Cruz das Almas-BA. The design was completely randomized in a 2 x 3 factorial scheme, arranged in subdivided plots, the substrate being used with and without humus and 3 light environments: red mesh, black mesh both with 50% shading and full sun. The following characteristics were analyzed: plant height, stem diameter, number of leaves, number of shoots, root volume and length, leaf area, dry leaf mass, stem, root, and pigments: chlorophyll a, b, total and carotenoids. The results were submitted to analysis of variance using the statistical program "R". The combined action of the red mesh and addition of humus to the soil increased the chlorophyll a and total content of the P. aculeata plants, whereas for the carotenoid content the best results were obtained in the plants grown in full sun with the presence of humus earthworm in soil. The environment in full sun provided the highest root length and the addition of humus to the soil provided an increase in the number of leaves and shoots, in the leaf area, leaf area ratio, leaf mass ratio and leaf dry matter mass, an important result, because the leaves represent the commercial product of P. aculeata. The cultivation in full sun and fertilization with earthworm humus is the most suitable for the initial growth of the ora-pro-nobis plants.