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Use of vermicompost and compost of water hyacinth (Eichhornia crassipes) on the growth of purple cabbage (Brassica oleracea)

Abstract:

The objective of this study was to evaluate the use of vermicompost and water hyacinth compost on the growth of purple cabbage. The treatments were vermicompost, water hyacinth compost, a 50:50 mixture of the former, and a control. The application of fertilizers was carried out during sowing and, at 30 and 60 days after sowing, with doses of 5kg.m-2. The experiment was established under a randomized block design with fve replications. Height, number of leaves, length and width of leaves, weight and diameter of fruit were measured at 30, 60 and 90 days after sowing. Results showed that plants fertilized with water hyacinth compost increased the values of the majority of variables, followed by the 50:50 mixture, while the plants without fertilization (control) showed the lowest values. The positive effect of growth on purple cabbage plants with water hyacinth compost could be related to its higher microelements content such as Mn, Cu and B. The use of vermicompost and water hyacinth compost is suggested for the production of purple cabbage, avoiding the use of inorganic fertilizers.