Department of Agronomy
During the 20 years of this experiment, soil fertility levels progressively declined with continuous cropping when no fertility maintenance practices were used. Consequently, the need for fertility improvement practices has increased with each successive year. Small grains have given more consistent responses to fertilizer treatments than corn. With the continued decline in fertility, response to fertilizer by corn is expected to be more consistent in the future.
Vienna Silt Loam soil management, soil nutrient depletion
South Dakota Experiment Station, South Dakota State College of Agriculture and Mechanical Arts
Puhr, L. F., "Twenty Years of Soil Management on a Vienna Silt Loam" (1962). Research Bulletins of the South Dakota Agricultural Experiment Station (1887-2011). 508.