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Fluid Journal : Fluid Journal 2005-2007
WINTER 2007 Fluid Journal 19 a significant plant growth response was observed for all fluid starter treatments on this very high P- testing soil. Largest growth increase was obtained with 6+20+0+0 and 6+20+6+4 popup treatments • Plant population was reduced 30 percent by the 6+20+6+4 popup treatment. Plant population was not affected by the other popup or by other placement (2x0 or 2x2) methods • Plant concentrations of NPK were not greatly different among any of the treatments at the V7 stage. Sulfur concentration was increased by the 2x0 and 2x2 treatments containing S. Uptake of NPKS was substantially increased by fluid starter due to the large effect on early growth • Corn grain yields in 2005 were not increased over the control by any of the starter treatments but were significantly increased in 2004. A 21-bu/A yield reduction resulted from the 6+20+6+4 popup treatment that reduced plant stand by 30 percent. Grain yields were not different between surface dribble (2x0) and injected (2x2) placements in either 2004 or 2005 • Grain moisture at harvest was not significantly affected by any of the fluid starter treatments. Dr. Randall is soil scientist/professor and Mr.Vetsch is assistant scientist at the Southern Research and Outreach Center, University of Minnesota.
Fluid Journal 2002-2004
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