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Title:   Author  item
                                            Tanaka, Donalditem
                                            Scholljegerdes, Ericitem
                                            Liebig, Markitem
                                            Kronberg, Scottitem
                                            KARN, JAMES - RETIRED ARS SCIENTISTitem
                                            Hanson, Jonathan
  Submitted to: American Society of Agronomy Abstracts
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 6/25/2008
                                    Publication  Date: 10/7/2008
                                    Citation: Tanaka, D.L., Scholljegerdes, E.J., Liebig, M.A., Kronberg, S.L., Karn, J., Hanson, J.D. 2008. Soil Water Storage During the Non-crop Period as Influenced by Livestock. No. 757-4 for Annual Meeting Abstacts CD-ROM, October 5-9, 2008, Houston Texas, ASA-CSSA-SSSA, Madison WI.Interpretive Summary:
                                Technical Abstract: Agriculture has evolved over the decades from simple cultivation to a number of differentiated forms.  Integrating crop and livestock enterprises may be one way to improve agricultural sustainability and take advantage of synergistic effects beneficial to both enterprises.  Our objectives were to determine if over-wintering dry bred cows on cropping systems designed for forage and grain swath grazing influences soil water storage and precipitation-storage efficiency during the non-crop period.  A three-year cropping system of oat/pea-triticale/sweet clover-drilled corn was designed to meet dry bred cow nutritional requirements from November through February.  All phases of the cropping system were present each year.  Soil water content was determined for six years using neutron scatter techniques in 30 cm increments to a depth of 2.1 m.  Treatments for each crop were residue or stover left in place with no livestock grazing (IP), residue or stover removed (R), and all residue or stover grazed by livestock (L).  For 5 of the 6 years, soil water storage and precipitation-storage efficiency was greatest where drilled corn was grown the previous year.  Soil water storage and precipitation-storage efficiency were the lowest for the R treatment.  Soil water content at harvest influenced soil water storage during the after-harvest to fall period.  In most years, greater soil water content at harvest resulted in little or no soil water storage during this period.  Greatest soil water storage occurred during the winter to spring seeding period.  The L treatment was as effective at soil water conservation as the IP treatment even though livestock consumed 50 to 70% of the above-ground biomass.


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