Use of Sulfur in Soybean Fields and its Association with Soil Types
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The Department of Agronomy seeks to teach the study of the farm-field, its crops, and its science and management. It originally consisted of three sub-departments to do this: Soils, Farm-Crops, and Agricultural Engineering (which became its own department in 1907). Today, the department teaches crop sciences and breeding, soil sciences, meteorology, agroecology, and biotechnology.
History
The Department of Agronomy was formed in 1902. From 1917 to 1935 it was known as the Department of Farm Crops and Soils.
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1902–present
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- Department of Farm Crops and Soils (1917–1935)
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- College of Agriculture and Life Sciences (parent college)
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Abstract
Over the years sulfur deposition from the air has been on a continuous decline. This is significantly due to the Clean air act of 1970.The decrease in sulfur deposition has led to a decrease of sulfur in the soil and consequently has lowered sulfur intake for plants. Sulfur is a key nutrient in plants, including soybeans, and low sulfur content can lead to a decrease in overall yield. Studies have been performed by adding sulfur to soybeans, but the results vary across the board on if additional sulfur increases soybean yield. The question this research will try to prove is, soybean yield response to sulfur fertilizer depends on soil type. To test this hypothesis randomized block field trials were set up to test one hundred pounds of ammonium sulfate (AMS) compared to the control of zero pounds across two soil types of Brookston and Crosby. Brookston and Crosby types were chosen for their difference in organic matter. The results showed there was no significant difference in yield by soil type comparing the AMS to the control. The results did show there was an economic advantage to applying AMS to the Crosby soil type. This field trial showed research needs to include statistical analysis and an economic analysis to show the true findings.