PERMEABILIDADE DO SOLO SUBMETIDO A DIFERENTES GRAUS DE COMPACTAÇÃO EM FUNDO DE VIVEIRO ESCAVADO PARA AQUICULTURA

Abstract

Aquaculture activity, that s a source of protein with low cost, fills your space every day. Thus, there is an increase in water use which has caused major losses of this natural resource, when used irrationally. Soil variables should be studied, as instruments to minimize these losses, encouraging the rational use of these natural resources. This test was conducted in a Yellowish-red clayey Latosol in deep Nursery excavated for aquaculture aimed to evaluate three repetitions of soil permeability (k) and four repetitions of the density (SD) and total soil porosity (TP) under different levels of compression: uncompressed soil (SN), compacted soil with three (CS3), six (CS6) and nine (CS9) footfalls, respectively, of the compactor drum and three footfalls of this compactor on mixture of soil-cement at a rate of 6.6% (SCC). The witness was the native soil removed from the trench 1.5 m deep. Was concluded that the Tukey test (5%), the variables SD and TP showed significant differences between the treatment SN and treatments CS3, CS6, CS9 and SCC was statistically equal the treatment CS3, CS6, CS9 and SCC when compared with each other; for the variable K, showed a significant difference the treatments SN, CS3 and CS6 was statistically equal the treatments CS9 and SCC, considering the cost of treating SCC as a 100%, the treatment CS9 was equivalent to 7% of this cost, demonstrating its economic viability.