Tue, Dec 17, 2019
9:00am to 9:50am
Tue, Dec 17, 2019
2:00pm to 2:50pm
Corn farmers seeking to reduce field passes and improve nutrient efficiencies will often combine tillage and nutrient banding in pre-plant applications (e.g. spring strip-till) or add more nitrogen in starter bands at planting. In this presentation, I will explore some of what we learned in Indiana rate and placement research on banded nitrogen and/or potash applications in corn row zones in RTK-guided pre-plant or at-plant situations. Banding too high a rate involves risk of corn stunting or lower plant populations, but some nutrient banding combinations in early spring result in superior yields compared to broadcast applications or later sidedress applications of the same nutrients. This is still a work in progress, but some preliminary guidelines may be helpful to crop consultants and farmers.
Dr. Tony J. Vyn is a Professor and Cropping Systems Extension Agronomist in the Department of Agronomy at Purdue University. Tony grew up on a hog and cash crop farm near Chatham in Southwestern Ontario, Canada. He earned his degrees from the University of Guelph, (in Guelph, Ontario) and was a faculty member in the Crop Science Department at the same university from 1987 until he left for Purdue University in 1998. Dr. Vyn advises several graduate students in research focused on understanding the interactions of tillage, crop rotation, plant density, and (or) nutrient placement systems with crop response and soil properties. His current investigations include corn hybrid and plant density comparisons at multiple N rates, tillage comparisons (like no-till and vertical tillage versus strip tillage), RTK automatic guidance for strip tillage and nutrient banding, plant-to-plant variability in corn, nitrogen rate and nitrification inhibitor impacts on greenhouse gas emissions, and crop response to micronutrient applications. He has served as Extension Coordinator for the Agronomy Department at Purdue and as Associate Editor for Agronomy Journal, Crop Science and Soil and Tillage Research. Tony has enjoyed being Co-Chair of the Indiana Crop Advisor Conference since 2003. In his spare time, he particularly enjoyed cash-crop farming with his own family from 1980 to 1998.