At certain times along the way, it will be necessary for a farmer to plant new crops and to spread fertilizer to encourage plant growth. The master robot will be responsible for both of these tasks. At the bottom of the master robot will be a slot that can be used to distribute fertilizer, soil, or seeds. For fertilizers and soil, the object will be placed in the storage compartment, and a fan-like device will be used to spread the fertilizer/soil along a given radius, allowing the robot to spread fertilizer in selected areas, at selected times, and under selected conditions, so as not to over-fertilize (see figure). Once again, however, the need for robotic fertilization will be miniscule-eliminating monoculture will greatly decrease the need for fertilizer. For seeds, the master robot works with the sensor network to drop seeds in the necessary location. Once the seeds are dropped, the robot travels around again, covering the seeds in soil and watering them.