Soil quality as an indicator of sustainable tillage practicesKARLEN, Douglas L.Soil & tillage research. 2004, Vol 78, Num 2, issn 0167-1987, 120 p.Serial Issue

Bulk density as a soil quality indicator during conversion to no-tillageLOGSDON, Sally D; KARLEN, Douglas L.Soil & tillage research. 2004, Vol 78, Num 2, pp 143-149, issn 0167-1987, 7 p.Article

Future Testing Opportunities to Ensure Sustainability of the Biofuels IndustryKARLEN, Douglas L; KERR, Brian J.Communications in soil science and plant analysis. 2012, Vol 43, Num 1-4, pp 36-46, issn 0010-3624, 11 p.Conference Paper

Soil profile nitrate response to nitrogen fertilization of winter triticaleNANCE, Carasella D; GIBSON, Lance R; KARLEN, Douglas L et al.Soil Science Society of America journal. 2007, Vol 71, Num 4, pp 1343-1351, issn 0361-5995, 9 p.Article

Conservation considerations for sustainable bioenergy feedstock production: If, what, where, and how much?JOHNSON, Jane M. F; KARLEN, Douglas L; ANDREWS, Susan S et al.Journal of soil and water conservation. 2010, Vol 65, Num 4, issn 0022-4561, 88A-91AArticle

A five-year assessment of corn stover harvest in central Iowa, USAKARLEN, Douglas L; BIRELL, Stuart J; HESS, J. Richard et al.Soil & tillage research. 2011, Vol 115-116, pp 47-55, issn 0167-1987, 9 p.Article

A new paradigm for natural resources research : The Conservation Effects Assessment ProiectKARLEN, Douglas L.Journal of soil and water conservation. 2008, Vol 63, Num 6, issn 0022-4561, p. 220AArticle

Winter triticale response to nitrogen fertilization when grown after corn or soybeanGIBSON, Lance R; NANCE, Carasella D; KARLEN, Douglas L et al.Agronomy journal (Print). 2007, Vol 99, Num 1, pp 49-58, issn 0002-1962, 10 p.Article

The soil management -assessment framework: A quantitative soil quality evaluation methodANDREWS, Susan S; KARLEN, Douglas L; CAMBARDELLA, Cynthia A et al.Soil Science Society of America journal. 2004, Vol 68, Num 6, pp 1945-1962, issn 0361-5995, 18 p.Article

Soil carbonation processes as evidence of tillage-induced erosionMARQUES DA SILVA, J. R; ALEXANDRE, Carlos.Soil & tillage research. 2004, Vol 78, Num 2, pp 217-224, issn 0167-1987, 8 p.Article

Tillage and crop management effects on soil erosion in central CroatiaBASIC, F; KISIC, I; MESIC, M et al.Soil & tillage research. 2004, Vol 78, Num 2, pp 197-206, issn 0167-1987, 10 p.Article

Identification of regional soil quality factors and indicators : I. Central and Southern High PlainsBREJDA, John J; MOORMAN, Thomas B; KARLEN, Douglas L et al.Soil Science Society of America journal. 2000, Vol 64, Num 6, pp 2115-2124, issn 0361-5995Article

Soil quality response to long-term tillage and crop rotation practicesKARLEN, Douglas L; CAMBARDELLA, Cynthia A; KOVAR, John L et al.Soil & tillage research. 2013, Vol 133, pp 54-64, issn 0167-1987, 11 p.Article

A Soil Quality Assessment within the Iowa River South Fork WatershedSTOTT, Diane E; CAMBARDELLA, Cynthia A; TOMER, Mark D et al.Soil Science Society of America journal. 2011, Vol 75, Num 6, pp 2269-2280, issn 0361-5995, 12 p.Article

A preliminary watershed scale soil quality assessment in north central Iowa, USAKARLEN, Douglas L; TOMER, Mark D; NEPPEL, Jerry et al.Soil & tillage research. 2008, Vol 99, Num 2, pp 291-299, issn 0167-1987, 9 p.Article

Tillage effects on compaction, earthworms and other soil quality indicators in HungaryBIRKAS, M; JOLANKAI, M; GYURICZA, C et al.Soil & tillage research. 2004, Vol 78, Num 2, pp 185-196, issn 0167-1987, 12 p.Article

Biochar impact on Midwestern Mollisols and maize nutrient availabilityROGOVSKA, Natalia; LAIRD, David A; RATHKE, Samuel J et al.Geoderma (Amsterdam). 2014, Vol 230-231, pp 340-347, issn 0016-7061, 8 p.Article

Thirty-year tillage effects on crop yield and soil fertility indicatorsKARLEN, Douglas L; KOVAR, John L; CAMBARDELLA, Cynthia A et al.Soil & tillage research. 2013, Vol 130, pp 24-41, issn 0167-1987, 18 p.Article

Tillage and cropping effects on soil quality indicators in the northern Great PlainsLIEBIG, M. A; TANAKA, D. L; WIENHOLD, B. J et al.Soil & tillage research. 2004, Vol 78, Num 2, pp 131-141, issn 0167-1987, 11 p.Article

Identification of regional soil quality factors and indicators : II. Northern Mississippi Loess Hills and Palouse PrairieBREJDA, John J; KARLEN, Douglas L; SMITH, Jeffrey L et al.Soil Science Society of America journal. 2000, Vol 64, Num 6, pp 2125-2135, issn 0361-5995Article

Corn Stover to Sustain Soil Organic Carbon Further Constrains Biomass SupplyWILHELM, W. W; JOHNSON, Jane M. F; KARLEN, Douglas L et al.Agronomy journal (Print). 2007, Vol 99, Num 6, pp 1665-1667, issn 0002-1962, 3 p.Article

Soil quality: why and how?KARLEN, Douglas L; DITZLER, Craig A; ANDREWS, Susan S et al.Geoderma (Amsterdam). 2003, Vol 114, Num 3-4, pp 145-156, issn 0016-7061, 12 p.Article

Planting date effects on winter triticale dry matter and nitrogen accumulationSCHWARTE, Aaron J; GIBSON, Lance R; KARLEN, Douglas L et al.Agronomy journal (Print). 2005, Vol 97, Num 5, pp 1333-1341, issn 0002-1962, 9 p.Article

Monitoring Soil Quality to Assess the Sustainability of Harvesting Corn Stover : Residue Removal and Soil Quality: Findings from Long-Term PlotsKARLEN, Douglas L; VARVEL, Gary E; JOHNSON, Jane M. F et al.Agronomy journal (Print). 2011, Vol 103, Num 1, pp 288-295, issn 0002-1962, 8 p.Article

Planting date effects on winter triticale grain yield and yield componentsSCHWARTE, Aaron J; GIBSON, Lance R; KARLEN, Douglas L et al.Crop science. 2006, Vol 46, Num 3, pp 1218-1224, issn 0011-183X, 7 p.Article