Mr. James Adkins lectured to the class about irrigation, and how different parts of the world irrigate their agriculture. First he talked about the different kinds of irrigation like pipe, rolling pipes, gravity irrigation, and what we mainly use today, center-pivot irrigation. He explained how each one worked, the process for using them, and why they might have a problem using them on some crops. Some technology he discussed that improved irrigation was VRI or variable rate irrigation. This technology is able to put what amounts of water need to go where, and conserve water. He then talked about where the water that we irrigate our crops with come from. Depending on location and soil, it either comes from the surface, or under ground in a aquifer. In Asia, they use surface water, while in the United States, we use mainly ground water.