Subprodutos da indústria de celulose como corretivos de acidez do solo e fonte de nutrientes na rúcula (eruca sativa mill.)
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Data
2015-07-31
Autores
Daudt, Géssica Ferreira
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Editor
Universidade Federal do Espírito Santo
Resumo
Worldwide, Brazil is the fourth largest producer of cellulose. In the industrial processing
of cellulose, there remains, which are not incorporated into the final product, termed
waste. The waste from the cellulose and paper industry have shown up as a good
nutrient source option and corrective ground by presenting low cost and potential for
improvement when incorporated into the soil. The objective of the present work
evaluate the changes in soil chemical properties, in two soils with different textural
classes, corrected with the use of alkaline by-products of the cellulose and paper
industry in the cultivation of arugula. The study was conducted at the experimental
farm of the Federal University of Espirito Santo in the city of São Mateus-ES. The
studied materials were extracted residues of cellulose and paper: with seven gray
levels of calcium magnesium - CCM (Biomass ash; Dregs & Grits; mud Cal and
Magnesita) and seven levels of Humuativo. Doses of CCM and Humuativo were
combined according to the matrix model Box Berard increased 3 (2k + 2K + 2k + 1)
constituting 13 treatments over a course of dolomitic limestone, arranged in a
completely randomized design (CRD), with three replications. The central point of the
matrix (0,0) taken as the standard dose, and referring to 100% of lime requirement for
MCC and 25 t ha-1 for Humuativo. The application of the by-products increased pH,
exchangeable Ca, Mg, P and V in both evaluated soils and reducing the contents of Al
and H + Al. The use of by-products increases the levels of Na + in soil up to 15 times
xi
the initial value. The waste had studied in their Cu and Ni composition in toxic amounts
to plants, preventing their use to address safety in consumption of arugula. The arugula
plants had gained momentum when grown in oxisoil. The fresh and dry weight of part
of the roots were higher when grown in Ultisol media texture. So much for the Oxisol
as to Udult is not recommended dose below 1.34 t ha -1 CCM product.
Descrição
Palavras-chave
Fertility , Fertilidade , Soil acidity , Acidez do solo , Waste , Resíduos