Chemical attributes of the solution and soil after application of residue of cellulose extraction/ Atributos quimicos da solucao e do solo apos aplicacao de residuo da extracao de celulose

The purpose of the study was to evaluate, under greenhouse conditions, using soil columns and cycles of wetting, the effect of residues from the extraction of cellulose on the chemical composition of the soil solution and on the two Red Oxisols. The experimental design was completely randomized. The treatments were: T1--without the addition of lime and residue (control), T2--1.0 t [ha.sup.-1] of limestone, T3--1.2 t [ha.sup.-1] dregs/grits, T4--0.8 t [ha.sup.-1] of lime mud; T5--2.4 t [ha.sup.-1] ash, T6--1.8 t [ha.sup.-1] dregs/grits + lime mud + ash in the ratio 1:3:6, T7--1.0 t [ha.sup.-1] dregs/grits + lime mud in the ratio 1:3. Evaluation was performed of the chemical composition of the solution extracted from each soil during four months of incubation and also chemical analysis of soil thereafter. The results were analysed by performing analysis of variance and Tukey test for comparison of means at 0.05 probability level. Among the applied treatments, 1.2 t [ha.sup.-1] dregs/grits is not found suitable for use in soil because of larger concentration of [Na.sup.+] transferred to the soil solution than recommended in the literature and the 2.4 t [ha.sup.-1] ash treatment can be used as a source of K to the soil.