By Julie Kerr Casper
Explores the most vital makes use of of the land: the construction of agriculture. This e-book is helping readers study that farms and ranches produce even more than nutrients; yet scientists, farmers, ranchers, and different landowners have not solved conservation difficulties - but.
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Additional resources for Agriculture: The Food We Grow and Animals We Raise
His estimates began the pattern that the government still follows today for annual agricultural reports. S. Department of Agriculture (USDA) in 1862. He called it the People’s Department. The USDA’s first official crop report was published in 1863. At that time, the USDA created a Division of Statistics. During the Civil War, the USDA collected and published crop and livestock statistics to help farmers determine what their goods were worth. Back then, the merchants who bought 31 32 agriculture the products from farmers knew more about critical market information than the farmers themselves.
Interrill erosion happens when a layer of soil is removed. Gully erosion happens when thin water columns quickly remove the soil from an area. Saltation erosion is the removal of soil and minerals by wind, water, or gravity. Overuse and erosion of the land can rob the soil of valuable nutrients, making it unproductive. Every year in the United States, thousands of acres of arable land are lost. Between 1990 and 2000, the United States lost almost 44 million acres of arable land. Some of this land was lost because homes, parking lots, and other structures were 33 34 agriculture Unchecked water erosion in a field.
When the air cools, it condenses, forming clouds. Some of the moisture falls back to Earth as rain, snow, hail, or sleet. 41 42 agriculture Once the water reaches the ground, it can go in several directions before it returns again to the atmosphere. Plants can use the water, it can be stored in lakes, or it can seep into the soil. The sun’s energy can then make the water evaporate back into the atmosphere, or the Earth’s gravity can pull the water that has entered the ground down through the soil to be stored for years as slowly moving groundwater.