Green Acres is the place to be . . .
One such resource is the Farmers Bulletin which was put out by the United States Department of Agriculture. While these bulletins only go back to 1889, they are useful for understanding life on the farm. Fortunately for us, these government publications are available in many federal depository libraries and online thanks to the University of North Texas' digitization project.
You will find information on all sorts of crops, plant diseases, animals, marketing, the experiment stations, and much more. Even though genealogy is not the purpose of the blog, the blogger at Seven Trees Farm in Washington has put together a couple of posts that will show genealogists some of what can be gleaned through the use of these documents. The first is Rainy Season, and Thoughts Turn to Planning . . . ; the second is Farm Home Conveniences.
Have fun exploring, and be sure to post your own finds to your blog or as a comment here!