Sistema de monitoramento de fluxo de seiva e umidade do caule em Schizolobium amazonicum Huber ex Ducke

Abstract

The volume of water lost by plants is not widely known and is directly related to plant size. Investigation of plant water use and storage is required or continuous and combinatorial monitoring of soil water content without stem and sap flow. The present work aims to build and evaluate a water monitoring system without continuous soil-plant-atmosphere. The experiment was carried out in the experimental area of the UFRB Water and Soil Engineering Center, where there is a plantation in an irrigated consortium of Paricá, some examples of banana cocoa. In the same period of the consortium planting without consortium, a row of seedlings was installed to compose a border, being in sequencer condition. For this study, 6 individuals were selected, 3 displayed in the irrigated pool area (T1) and 3 in the borderline without irrigation (T2). All sensors used in this experiment were built in the Agricultural Instrumentation Laboratory - LIAGRI, in the facilities of the UFRB Water and Soil Engineering Center, following the low cost concept of production. For capsule monitoring, the sensors were constructed and calibrated using the standard or gravimetric method. The flow rate determination follows the heat ratio method by applying a heat pulse for 10 seconds in the compartment and monitoring the rate at which this heat is carried by the xylem. The soil sampling monitoring was made up of 7.5 and 22.5 cm depth probes. As dendrometric variables were measured at the end of the study to verify if the managements shown in the studied plant. strong tool in the investigation of water in the continuous soil-plant-atmosphere. Irrigated management had a significant influence on paricá growth.