Review of historical soil conservation experiment data
•Manure reduced total runoff by 1% to 68%.
•Manure reduced soil erosion by 13% to 77%.
•
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PRESENTER NOTES
Key Discussion
Topics
1.Manures contribution to improved soil
structure results in improved water infiltration and greater water-holding
capacity, benefiting crop water stress, soil erosion.
2.An extensive review of the literature and
historical soil conservation experiment station data (Risse and Gilley, 2000)
at selected locations around the U.S. suggested that manure produced
substantial reductions in soil erosion (13%-77%) and runoff (1%-68%).
3.Increased manure application rate produced
greater reductions in soil erosion and runoff.
4.A residual benefit of past manure
application was noted during years when manure was not applied.
