Installation and calibration of sensors for analysis of soil humidity and temperature in eastern amazon areas

Soil moisture and temperature are important components to improve watershed management natural resource planning, especially in areas where water supplies limited during dry seasons. Thus, this study aimed evaluate the installation calibration of five sensors (Drill & Drop) as well consistency results obtained for soil forest, pasture, forest-pasture transition pasture-urban Itacaiúnas River Hydrographic Area (BHRI) Eastern Amazon. The refer period from April September 2019, showing different trends between forest pasture areas. data analysis efficiently identified measurement errors, surface layer (10 cm). Onça Puma IFPA Rural stations had highest percentages error 22.8% 17.6%, respectively. On other hand, these may be associated with environmental characteristics region, physical each season. humidity parameters were consistent meteorological variables (precipitation mean air temperature) measured by installed local hydrometeorological stations. Overall, measurements properly presented quality sources. it is expected that will contribute enriching availability IRB encouraging use direct given quantity (and quality) using instrumentation.