Author Archives: Marc Van Iersel

About Marc Van Iersel

Marc van Iersel ( is a professor of horticulture at the University of Georgia

Save Water With Automation And Sensors

Automating irrigation is a great way to save water. One of the latest innovations in irrigation automation is the use of substrate moisture sensors to trigger irrigation. These sensors are relatively inexpensive and, when used, can conserve water and, consequently, reduce pollution and the amount of money spent on electricity for pumps in wells. A

Predicting Plant Water Uptake

Understanding plant water use begins with substrates, which serve as the water reservoir for plants. There are a few basic concepts that will help you understand the impact that substrate selection has on plant water availability. Container capacity (or water-holding capacity) is the maximum amount of water a substrate can hold. To calculate the container