The new SapIP-IRT wireless infrared temperature system from Dynamax Inc. is the latest development in IR leaf temperature sensing for use in irrigation scheduling and plant stress detection. This new system allows for small IRT nodes to be distributed up to 500 meters (1600 ft) apart throughout a field, and data to be collected with a single wireless modem. Data is then displayed and graphed on a website where data files can also be downloaded to your PC. Plant stress models are used to determine if, and when, your crops need irrigation, and flags are used when irrigation is required.