InfoAg 2018 Presentation
 
Presentations
Zones vs. Grid

Regency C
Wed, Jul 18, 2018
8:40am to 9:20am

Zones vs. Grid

Regency C
Wed, Jul 18, 2018
2:00pm to 2:40pm

 

Soil testing encompasses the process of collecting soil samples, having them analyzed, and then interpreting the results to make fertilizer recommendations. This process attempts to provide information on the amount of nutrient present and its availability to the crops. We should soil test at a spatial resolution matching that of our nutrient application. We typically determine this resolution based on equipment capabilities and the size of zones within a field that can be managed uniformly. However, we typically focus on collecting soil samples at the appropriate resolution, through zone or grid sampling, but ignore the resolution at which scientists developed recommendations. We will discuss soil test correlation and calibration, the resulting recommendations, and the need to update recommendations to support site specific nutrient management.

Speaker

Josh McGrath

Associate Professor & Extension Specialist
University of Kentucky
Biography

Dr. Josh McGrath joined University of Kentucky’s faculty in 2014 after spending eight years at the University of Maryland focused on agriculture and the Chesapeake Bay. Josh’s research and extension activities concentrate on agricultural productivity, with emphasis on water quality, nutrient use efficiency, and precision agriculture. Dr. McGrath routinely speaks throughout the United States on issues related to agriculture and the environment as well as precision agriculture. Dr. McGrath was born and raised in Smyrna, Delaware, graduated with a BA from Johns Hopkins University, earned his Ph.D. from University of Delaware, and conducted post-doctoral research at Virginia Tech. When not talking about or researching soil fertility Josh enjoys hunting and fishing and has been a volunteer firefighter for over 25 years.