成果の概要

The survey plan was initially discussed with the local counterpart and technical assistant at UDS. A soil sampling survey was then carried out across the Northern Ghana region in collaboration with the local team. In total, 200 sampling locations were demarcated as 2-m plots with a handheld GPS device, and soil samples from these plots were collected with a soil auger and core sampler. In addition, soil moisture was measured in the field using a real-time TEROS soil moisture sensor. The collected soil samples were stored at the laboratory at UDS, Tamale, where oven-dry analyses of the core samples were conducted to calibrate the moisture sensor.