Presentations
T11
Crop Management
Tue, Dec 13, 2022
11:00am to 11:50am
T4
Crop Management
Tue, Dec 13, 2022
4:00pm to 4:50pm
Macros, Micros, and Magical Mixes: Input-intensive Management Impacts on Corn Growth, Yield, and Kernel Weight Determination
Recent increases in crop variable costs, weather variability, emerging diseases, and declines in yearly percent yield gains have driven farmers toward using multiple tactics to enhance corn yield. A popular strategy used to optimize corn yield is through combinations of higher seeding rates, additional macro and micronutrient fertilizer, and prophylactic chemical input applications. However, these management decisions can often be expensive, unnecessary, and may heighten the risk for biological resistance and nutrient losses. Field research trials were established across Indiana, Michigan, and Kentucky to examine corn physiological, yield, and economic responses to different input applications and management intensities. In addition, this project examines the role of input applications and management intensities on corn grain fill period duration and kernel weight accumulation.
Speaker
Dan Quinn
Dr. Daniel J. Quinn is an Assistant Professor of Agronomy and the Extension Corn Specialist at Purdue University. He earned his B.S. and M.S. in Crop and Soil Sciences from Michigan State University and his Ph.D. in Plant and Soil Science from the University of Kentucky. Dr. Quinn leads an integrated research and Extension program focused on improving corn productivity, profitability, and environmental performance across Indiana and the Midwest. His current work examines fertilizer management, hybrid types, crop physiology, agronomic management intensities, equipment technology, conservation cropping systems, and the use of precision and sensing technologies to enhance nutrient efficiency and yield stability. Since 2021, his team has conducted more than 150 field trials across Indiana and secured over $4 million in competitive and industry funding. In addition, he has delivered over 200 presentations to over 24,000 people, been invited to speak at 33 out-of-state and international conferences, authored 20+ peer-reviewed papers, and leads several regional and national collaborations advancing science-based corn management practices.