Animal Manure Applied to Growing Crops Swine manure was applied as top dress nitrogen on wheat in late winter of 2006 & 2007 in replicated plots and yields compared to UREA. Swine manure was applied as side dress nitrogen to corn in June of 2005 & 2006 in replicated plots and yields compared to 28% UAN.
Wheat Top Dress Test Plot Harvested July 7, 2006 Type of topdress AppliedAvg. Yield Per/ac Swine Manure 3,250 gallons per acre 95.73 Urea Fertilizer 105 units of nitrogen per acre 87.14 No Fertilizer applied 83.28
Wheat Topdress Test Plot Harvested July 3, 2007 Type of Topdress AppliedAvg. Yield Per/ac Nursery Swine Manure 6,000 gallons per acre (incorporated) 84.46 Urea fertilizer 94 lbs. of nitrogen per acre 83.70 Leopold Field
Wheat Topdress Test Plot Harvested July 4, 2007 Type of topdress AppliedYield bu/ac Swine Manure 5,000 gallons per acre (Surface applied) 102.2 Swine Manure 5,000 gallons per acre (Incorporated) 98.0 Urea Fertilizer 105 units of nitrogen per acre 86.5 Niese Field
Corn Plot Objectives Determine if manure applied as side dress nitrogen during the growing season provides adequate nutrients to maintain yield Determine if application equipment is available to accurately side dress corn with liquid manure.
Corn Treatments Using an Aeroway Toolbar Treatment 1 – incorporation of liquid swine nursery manure Treatment 2 – 99% liquid swine manure plus 1% 28% UAN (17 gallons of 28% UAN added to the 2400 gallon tank of swine nursery manure) Treatment 3 – 28% UAN injection of liquid nitrogen
2006 Yield Data YieldPSNTEnd of Year Stalk Total NSide- dress N (bu/ac)(ppm)Test (ppm) (lb/ac) Avg. Treatment 1 (Manure only) 196.715.92,518172131 Avg. Treatment 2 (Manure + 28%) 194.113.51,52512988 Avg. Treatment 3 (28% only) 193.315.61,619191150 Average all Plots 194.915.01,888164122
Swine Manure Yield Summary Two Years Data On Corn Manure28%Blended 2006195bu/ac194bu/ac192bu/ac 2005125bu/ac 127bu/ac
Summary Swine manure has matched or exceeded wheat and corn yields compared to traditional inorganic fertilizers Equipment is available to accurately apply manure to growing crops More research is needed to find more efficient manure application methods and also seek to reduce potential compaction