Agricultural Census 2010
Often, machines automatically provide feed and water, collect the eggs, and remove waste. Agricultural methods used in the Corn Belt of the US are very different. The Corn Belt is the area of the northern Midwest where most of the nation's corn crop is grown. First of all, farmers rarely work alone—the size of American farms requires a lot of labor. Soon after they harvest the corn in autumn, farmers work leftover vegetation, or stubble, into the soil. In the spring, farmers work the soil again, using an implement with rows of sharp-edged steel discs, called a disc harrow. After all, security issues can lead to costs in areas other than the product's primary function. Scientists in other industries are testing swarms of robots that maintain facilities or clean up toxic waste, and systems under study in the defense sector would coordinate the movements of groups of unmanned aircraft. While such autonomous systems will be challenging to develop and perfect, they promise majo