306-12 An Evaluation of Crop Rotation and Soil Nutrients in the Midsouth.
Poster Number 825
Numerous studies show that both corn and soybeans benefit from a rotational cropping system. This research has specifically been conducted in the Midwest by both Perdue and Iowa. A report from Nebraska showed that dryland corn following soybeans yielded 17% more than corn following corn (Varvel and Wilhelm, Vol. 95 p. 1220-1225, 2003).
Will these values hold true in the Midsouth? The soil properties present a different environment for off-season maintenance, higher temperatures,and a decrease in dryland crop yeild could be factor into the outcome of the research.
The study was established in 2014, with alll plots following a year of full season soybean. The study has 24 treatments, replicated 4 times, in 7 locations through the Midsouth in five states.
Data from the first year shows a variety of economic and enviromental effects to the crop yield. Insect, herbicide drift, and rain fall all effected the plots. The study will be replicated for 5 years.