Students: Graduate students: Anne Place (phase 2, MS in '11) and Joe Lawrence (phase 2, MS in '08).
Faculty and Staff: Quirine Ketterings and Greg Godwin (Nutrient Management Spear Program), Brent Gloy (BEE) and Curt Gooch and Karl Czymmek (PRO-DAIRY).
Participating Cornell Cooperative Extension Educators (2001-2007): Shawn Bossard (CCE of Seneca County), Tom Kilcer (CCE of Rensselaer County), Brian Aldrich (CCE of Cayuga County), and Joe Lawrence (CCE of Lewis County).
Participating Research/Teaching
Centers, Campus Faculty, Consultants: Ev Thomas/Eric Young (Miner Institute), Peter Barney (Barney Consulting), Peg Cook (Cook's Consulting).
Note: 2008 research showed, after quartering of the stalk, three of four quarters can be discarded...combine one quarter per stalk and submit to the laboratory for analysis. Place samples (one per acre, 15 stalk minimum) in a paper back for transportation.
Quirine Ketterings, Nutrient Management Spear Program, Department of Animal Science, 323 Morrison Hall, Cornell University, Ithaca NY 14853.
Costs can only be covered if both stalk and soil samples are included and samples are submitted with a fully completed field history form.
Further information on this project can be obtained from Quirine Ketterings (qmk2@cornell.edu or 607 255 3061). You can also write to: Nutrient Management Spear Program, Department of Animal Science, Cornell University, 323 Morrison Hall, Ithaca NY 14853.
Introduction
Determining effective manure management options that are compatible with reduced-tillage corn systems is important for reducing nutrient runoff and N-volatilization. Shallow tillage not only offers the potential to conserve N, but also to reduce soil erosion compared to conventional tillage by reducing overall soil disturbance and maintaining a greater degree of surface residue cover. An aerating tillage tool was selected to be used in a two-year trial because of its minimum tillage capabilities and proved to be the most farmer available out of many other comparable machines. The aerator operates through the use of Shattertines®, eight-inch long, slightly angled, blades that rotate as they cut into the ground and shift the soil. This is unlike most conventional tillage equipment where the soil is churned and then followed by secondary tillage to prepare a seed bed.
The big question is: is shallow mixing with aeration equipment a way to conserve manure N, reduce odor and maintain or enhance soil organic matter levels?
Objectives
Determine impact of manure application methods on:
Yield and quality of corn silage/grain.
N conservation.
Surface residue coverage.
Compaction.
Moisture content of soil.
Phase 1 (2005-2007): Aurora Research Farm
We were successful in securing an Altria (year 1) and a New York Farm Viability Institute grant (years 2 and 3) for this project and initiated a 2-year study comparing chisel and Aerway incorporation to surface application and an inorganic N only control.
Results were document in numerous popular press articles and a peer-reviewed paper:
Lawrence, J.R., Q.M. Ketterings, J.H. Cherney, S.E. Bossard, G.S. Godwin (2008). Tillage tools for manure incorporation and N conservation. Soil Science 173: 649-658.
Phase 2 (2008-2009): Statewide Expansion: Ten On-Farm Sites