Will we be side-dressing manure in the future?
July 21, 2011 by Natalie Rector Amanda Meddles and Glen Arnold; Michigan State University Extension and Ohio State
The 2011 spring is a reminder of how few days we may have to complete
all our spring work; there may not be an opportunity for manure
The 2011 spring is a reminder of how few days we may have to complete all our spring work; there may not be an opportunity for manure application. Ohio State University has been successfully testing a dragline system of manure application as a side-dress application on corn. This process can increase the application window of manure and apply nitrogen at a critical time for the corn plant, which can offset the cost of nitrogen fertilizer, replacing it with manure applications that were going to occur anyway.
Is this cost effective and does it produce equivalent corn yields to side-dressed fertilizer? Results at OSU say yes. A PDF report on the financial implications is available. (http://www.agcrops.osu.edu/on-farm-research/archive/2009/research/2009/Manure Sidedress.pdf )
A project in Wood County, Ohio is comparing side-dress applications of manure to conventional 28 percent UAN and dairy manure.
The manure side-dressing unit has a “spool” that lays the dragline down as the tractor moves one direction down the field, and then picks the dragline up on the next pass and so on. It reduces odors by injecting manure into the ground where it is less exposed to air and wind movement. It also allows producers to apply manure into the summer as one would with conventional side-dressing applications.
The research project will look at the viable corn plant population for silage as well as grain corn yield. Being able to side-dress manure with a dragline may be the answer to expanding the manure application window, reducing compaction and, anytime manure is injected, odors are reduced. This project should answer the question of whether the method provides more benefit to crop yields and silage mass than conventional 28 percent UAN. We are also slurry seeding fescue and rye grass into some of the plots during the manure side-dress application to see if it will provide a viable forage crop after silage harvest.
Watch a video (http://www.youtube.com/watch?v=Q9zlpUP8j_k ) of the dragline side-dress equipment in action.