Tue, Jul 17, 2018
1:00pm to 1:40pm
Phosphorus (P) and potassium (K) become concentrated where they are applied partially because of the lack of soil mixing in conservation tillage systems. This presentation will examine the effect of surface broadcast and sub-surface band placement of P and K and of no-till and strip-till tillage on soil characteristics; soil water, P, and K distribution; root distribution and yield of corn and soybean; and to determine how to correctly estimate fertility levels by soil sampling after sub-surface band fertilization. Further, the effect of tillage and P placement on reducing P losses to the environment will be discussed.
Dr. Fabián G. Fernández is an Associate Professor in the Department of Soil, Water, and Climate at the University of Minnesota, Twin Cities. He earned his Ph.D. degree from Purdue University and M.S. and B.S. degrees from Brigham Young University. Before joining the University of Minnesota, he was an Assistant Professor at the University of Illinois. The research and extension education programs of Dr. Fernández are focused primarily on crop production and environmental issues related to nutrient management in corn cropping systems. He seeks to identify and implement nitrogen management practices that are sustainable both in terms of minimizing environmental impacts, specifically water quality, and improving crop yields.