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Revista mexicana de ciencias agrícolas

versão impressa ISSN 2007-0934

Resumo

BAUTISTA-VARGAS, Emilio et al. Textile industrial sludge in the production of potted hydrangea (Hydrangea macrophylla L.). Rev. Mex. Cienc. Agríc [online]. 2015, vol.6, n.spe12, pp.2359-2370. ISSN 2007-0934.

Industrial sludge is a serious environmental problem. Its use as mulch is the most accepted practice from an ecologically and economically point of view. The use of sludge in agriculture improves certain physical properties of the soil, serving as a complement to fertilization, but an inadequate management has some risks for the accumulation of potentially toxic elements in soils, which can be absorbed by crops and and enter the food chain. The objective of the present study is to search alternatives for the use of industrial textile sludge and provide value added as substrate in the production of hydrangea (Hydrangea macrophylla L.). Four sludge concentrations were tested: 0, 10, 20 and 30%, using peat as base substrate, in a completely randomized design with 15 replications, being the experimental unit one plant. The results of this study showed that it is feasible to use textile industrial sludge in 10% concentrations, without negative effects on growth and chemical composition of plants, increasing the concentration of potassium in the inflorescences and stems. Concentrations above 10% decreased plant growth, presumably due to the increase of EC in the substrate.

Palavras-chave : mineral; organic fertilizers.

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