Andrea Baptistel

This study aimed to verify the efficiency of photographs as visual stimuli and the knowledge of the Santo Antonio community, Piauí, Northeast Brazil, on two species widely used in local therapy. Semi-structured interviews were conducted using the checklist/inventory method which consisted in offering clear pictures to informants. Furthermore, local knowledge was also analyzed using quantitative measurements. The present study cited 16 uses for amburana (A. cearenses) and ten uses for mangabeira (L. replicata); moreover, the use of visual stimuli proved to be inefficient with respect to the recognition of these two tree species (A. cearenses and L. replicata) in the studied community. The results obtained, despite the knowledge of only two species, can add to the information provided about the specific domain of knowledge regarding the medicinal plants, because the selected species are very popular in the region.

ABSTRACT: Piaui Cerrado is being explored by producers regardless of the intrinsic characteristics of the soil and region. The aim of this study was to investigate the spatial variability of the chemical attributes of a Oxisol in two adjacent areas with conventional systems in Piaui Cerrado. The work was conducted in the city of Currais, PI, in two soybean production areas managed by conventional tillage. Soil samples were taken at a depth of 0-0.20 m, two meshes with regular interval of 200 m, a total of 100 points, each point was derived from eight subsamples. In each sample, the pH was measured, organic matter, phosphorus, potassium, calcium, magnesium, hydrogen + aluminum and calculated the sum of bases, cation exchange capacity, the percentage of base saturation and aluminum. The use of descriptive analysis did not identify the two environments based on the majority of the chemical attributes. Cluster analysis identifies two distinct environments based on chemical properties. T...