A portable drip infiltrometer was used to study how water moves through sandy loam soil. By changing the water application rate, researchers measured how quickly water soaked in and how fast it moved through the soil. They found that the soil's ability to absorb water varied depending on how wet the soil was. The measurements from the drip infiltrometer were compared to those from a different type of infiltrometer, showing differences in results. The researchers concluded that measuring how water moves through this soil is tricky because the soil is not consistent throughout.