Abstract The terracing is important for erosion processes control in agricultural areas. However, agricultural terraces are being removed from the production areas under no-tillage systems. There are still uncertainties about the terracing effects on the soil saturated hydraulic conductivity (Ks) and macroporosity (Macro), which represent the functionality of the system. We aimed to evaluate the magnitude and spatial distribution of Ks and Macro and the correlation between these soil properties in two paired megaplots, of 1.923 ha, one with terraces (T) and another without terraces (WT). Ks and Macro were determined at 0.00-0.10 m, 0.10-0.20 m, 0.20-0.30 m, and 0.30-0.40 m soil layers and submitted to descriptive statistical, geostatistics, and Spearman correlation analysis. Ks was highest in the 0.00-0.20 m and lowest in the 0.20-0.40 m layers in T. In WT, Ks was highest in the 0.00-0.10 m and lowest in the 0.10-0.40 m layers. However, the Macro was highest in the 0.00-0.10 m and lowest in the 0.10-0.40 m layers in both megaplots. Ks and Macro had a positive correlation in both megaplots. The spatial distribution of Ks and Macro had a positive correlation, with regions with higher Ks coinciding with regions with higher Macro in both megaplots. The spatial distribution of Ks and Macro in WT did not have a clear trend, while in T there was a slight stratification in strips interspersed with higher and lower Ks and Macro. These initial trends are not conclusive considering the short term between terraces removal and Ks and Macro evaluation. However notillage no tillage systems (Ks Macro, , (Macro) system megaplots 1923 1 923 1.92 ha (T WT. . (WT) 0.000.10 000010 0.00 0.10 0 00 10 0.00-0.1 0.100.20 010020 0.20 20 0.10-0.2 0.200.30 020030 0.30 30 0.20-0.3 0.300.40 030040 0.40 40 0.30-0.4 statistical geostatistics analysis 0.000.20 000020 0.00-0.2 0.200.40 020040 0.20-0.4 0.100.40 010040 0.10-0.4 trend evaluation (Macro 192 92 1.9 (WT 000 0.000.1 00001 0.0 010 0.1 0.00-0. 100 0.100.2 01002 020 0.2 2 0.10-0. 200 0.200.3 02003 030 0.3 3 0.20-0. 300 0.300.4 03004 040 0.4 4 0.30-0. 0.000.2 00002 0.200.4 02004 0.100.4 01004 19 9 1. 0.000. 0000 0. 01 0.00-0 0.100. 0100 02 0.10-0 0.200. 0200 03 0.20-0 0.300. 0300 04 0.30-0 0.000 0.00- 0.100 0.10- 0.200 0.20- 0.300 0.30-

O objetivo deste estudo foi avaliar a viabilidade da propagação vegetativa por meio do método de estaquia de sete espécies arbóreas de grande ocorrência na zona ripária do Baixo Curso do Rio São Francisco sergipano, submetidas a diferentes concentrações do fitorregulador AIB (ácido indolbutírico): 0, 2500 e 5000 mg.L-1, para potencialização de seu uso na composição da técnica de bioengenharia de solos. O delineamento experimental utilizado foi o Inteiramente Casualizado (DIC) com três repetições, totalizando 21 tratamentos. O período de avaliação foi de 120 dias para cada espécie, sendo realizada coleta de dados quinzenalmente, totalizando oito avaliações por espécie. Os parâmetros avaliados foram: Taxa de sobrevivência, Taxa de enraizamento, Número de raízes formadas, Formação de calos e Peso de matéria seca de raízes. Entre as espécies estudadas, Schinus terebinthifolius Raddi apresentou os melhores resultados com esse método de propagação, com destaque para a concentração de 2500 mg.L-1.

The objective of this work was to evaluate the feasibility of vegetative propagation through cutting technique of seven tree species with strong occurrence in the riparian forest of the Lower São Francisco River in Sergipe State, under different concentrations of indolbutiric acid at 0, 2500, and 5000 mg.L-1, for potentialization of its use in soil bioengineering technique. It was used a complete random block design with three replicates, and a total of twenty-one treatments. The evaluation period was 120 days for each species, and the data collection was made in intervals of fifteen days, in a total of eight evaluations for each species. The evaluated parameters were: Survival Rate, callus formation, and Root Dry matter Weight. Among the studied species, Schinus terebinthifolius Raddi presented the best results related to cutting technique mainly under the indolbutiric acid concentration of 2500 mg.L-1.