Oklahoma Soil Fertility Handbook
Soil is perhaps the most important natural resource in Oklahoma. It is important to all, for without soil there would be no life on Earth. Our food and much of our clothing and shelter come from soil. Soil supports the gigantic agricultural system, which is the major contributor to the state’s development and continued prosperity. Oklahoma has a land area of more than 44 million acres, part of which is covered by water. The majority, about 41 million acres, is used for production of food and fiber. This land has an average value of more than $400 per acre or a total value in excess of $16.4 billion. It is an asset well worth protecting. Many different kinds of soil occupy this land area. Some soils are extremely productive, while others are not as productive. Each soil has a set of unique characteristics that distinguishes it from other soils. These characteristics determine the potential productivity of the soil. This handbook explains the soil problems, fertilizer, soil research, precision nutrient management and other factors that influence the characteristics of soils.