Aproveitamento do resíduo da indústria de celulose no cultivo do bambu

Abstract

The process of papermaking, produces an industrial waste called "lime sludge ", which is not recommended to be dropped indiscriminately, or dumped into rivers, to prevent contamination. So the experiment was conducted to evaluate the potential of lime sludge as an alternative to correct the fertility of soil grown with bamboo. The experiment was conducted in a greenhouse, and the treatments where the application of industrial waste lime sludge at doses of 0, 1, 2, 4, 8 and 16 t ha-1. Bamboo plants were grown for 90 days, and then the plants were collected and determined the biomass of leaves and stems, and mineral nutrients. There was a significant application of lime sludge, so that there was an increase in levels of potassium in the leaves of bamboo, and a decrease in the levels of magnesium in the stem. Despite of no increase in plant biomass, the addition of lime sludge residue also did not cause symptoms of toxicity or deficiency of nutrients of plants, suggesting to be advisable the use of this material in the doses tested without compromising the environment.