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Summary of Agricultural Experiments Used in Soil Carbon Sequestration Study

West, T.O., and W.M. Post. 2002. Soil Organic Carbon Sequestration by Tillage and Crop Rotation: A Global Data Analysis . Carbon Dioxide Information Analysis Center, U.S. Department of Energy, Oak Ridge National Laboratory, Oak Ridge, Tennessee, U.S.A.

Summary of agricultural experiments used in this study.

Location Crop or Tillage1 Prior history Duration (y) Treatment2 Depth (cm) ΔSOC3 (g m-2) References
Ås, Norway N/A (low N) N/A 31 3 y cereal-3 y row crop vs. cereal 20 -199 Uhlen (1991)
Ås, Norway N/A (low N) N/A 31 2 y ley-4 y row crop vs. 3 y cereal-3 y row crop 20 199 Uhlen (1991)
Ås, Norway N/A (low N) N/A 31 4 y ley-2 y row crop vs. 3 y cereal-3 y row crop 20 881 Uhlen (1991)
Ås, Norway N/A (medium N) N/A 31 3 y cereal-3 y row crop vs. cereal 20 -171 Uhlen (1991)
Ås, Norway N/A (medium N) N/A 31 2 y ley-4 y row crop vs. 3 y cereal-3 y row crop 20 711 Uhlen (1991)
Ås, Norway N/A (medium N) N/A 31 4 y ley-2 y row crop vs. 3 y cereal-3 y row crop 20 597 Uhlen (1991)
Athens, Georgia, USA Summer grain-winter rye Old field, 10 years 16 NT vs. CT 20 158 Hendrix (1997)
Auburn, Alabama, USA CT N/A 100 Cn-C vs. Cn 10 37 Entry et al. (1996), Mitchell et al. (1996), Mitchell et al. (2000)
Auburn, Alabama, USA CT N/A 100 Cn-C-S vs. Cn 10 701 Entry et al. (1996), Mitchell et al. (1996), Mitchell et al. (2000)
Balcarce, Argentina CT (no fert.) Pasture, 4 y 11 S-Sf vs. S 17 798 Studdert and Echeverría (2000)
Balcarce, Argentina CT (no fert.) Pasture, 4 y 11 W-S vs. S 17 1393 Studdert and Echeverría (2000)
Balcarce, Argentina CT (no fert.) Pasture, 4 y 11 C-Sf vs. C 17 -45 Studdert and Echeverría (2000)
Balcarce, Argentina CT (no fert.) Pasture, 4 y 11 C-S vs. C 17 -663 Studdert and Echeverría (2000)
Balcarce, Argentina CT (no fert.) Pasture, 4 y 11 W-C vs. C 17 101 Studdert and Echeverría (2000)
Balcarce, Argentina CT (N fert.) Pasture, 4 y 11 S-Sf vs. S 17 1404 Studdert and Echeverría (2000)
Balcarce, Argentina CT (N fert.) Pasture, 4 y 11 S-C vs. S 17 1921 Studdert and Echeverría (2000)
Balcarce, Argentina CT (N fert.) Pasture, 4 y 11 C-Sf vs. C 17 -101 Studdert and Echeverría (2000)
Balcarce, Argentina CT (N fert.) Pasture, 4 y 11 W-C vs. C 17 112 Studdert and Echeverría (2000)
Balcarce, Argentina CT (N fert.) Pasture, 4 y 11 C-S vs. C 17 -393 Studdert and Echeverría (2000)
Balcarce, Argentina CT (no fert.) Pasture, 4 y 11 W-S (avg. seq.) vs. W 17 112 Studdert and Echeverría (2000)
Balcarce, Argentina CT (no fert.) Pasture, 4 y 11 W-Sf (avg. seq.) vs. W 17 595 Studdert and Echeverría (2000)
Balcarce, Argentina CT (N fert.) Pasture, 4 y 11 W-S (avg. seq.) vs. W 17 168 Studdert and Echeverría (2000)
Balcarce, Argentina CT (N fert.) Pasture, 4 y 11 W-Sf (avg. seq.) vs. W 17 483 Studdert and Echeverría (2000)
Balcarce, Argentina CT (N fert.) Pasture, 4 y 11 W-C (avg. seq.) vs. W 17 651 Studdert and Echeverría (2000)
Buenos Aires, Argentina N/A (no fert.) N/A 15 W-G vs. W 21 310 Miglierina et al. (2000)
Buenos Aires, Argentina N/A (fert.) N/A 15 W-G vs. W 21 180 Miglierina et al. (2000)
Buenos Aires, Argentina N/A (no fert.) N/A 15 W-G/legume vs. W 21 390 Miglierina et al. (2000)
Buenos Aires, Argentina N/A (fert.) N/A 15 W-G/legume vs. W 21 760 Miglierina et al. (2000)
Bushland, Texas, USA RT CT, W or W-F, ~30 y 10 Sm vs. W-Sm-F 20 100 Potter et al. (1997)
Bushland, Texas, USA RT CT, W or W-F, ~30 y 10 W vs. W-Sm-F 20 20 Potter et al. (1997)
Bushland, Texas, USA RT CT, W or W-F, ~30 y 10 W vs. W-F 20 100 Potter et al. (1997)
Bushland, Texas, USA NT CT, W or W-F, ~30 y 10 Sm vs. W-Sm-F 20 80 Potter et al. (1997)
Bushland, Texas, USA NT CT, W or W-F, ~30 y 10 W vs. W-Sm-F 20 280 Potter et al. (1997)
Bushland, Texas, USA NT CT, W or W-F, ~30 y 10 W vs. W-F 20 420 Potter et al. (1997)
Bushland, Texas, USA Sm CT, W or W-F, ~30 y 10 NT vs. RT 20 280 Potter et al. (1997)
Bushland, Texas, USA W CT, W or W-F, ~30 y 10 NT vs. RT 20 560 Potter et al. (1997)
Bushland, Texas, USA W-Sm-F (avg. seq.) CT, W or W-F, ~30 y 10 NT vs. RT 20 300 Potter et al. (1997)
Bushland, Texas, USA W-F (avg. seq.) CT, W or W-F, ~30 y 10 NT vs. RT 20 240 Potter et al. (1997)
Canterbury, New Zealand W-B-peas W-B-peas, >10 y 9 NT vs. CT 15 2607 Hermawan and Cameron (1993)
Canterbury, New Zealand W-peas-B-white clover Ryegrass-white clover, ~5 y 10 NT vs. CT 15 640 Francis and Knight (1993)
Cantuar, Saskatchewan, Canada W Cereal-fallow, 70-80 y 15 NT vs. CT 15 192 Campbell et al. (1996b)
Cantuar, Saskatchewan, Canada W-F Cereal-fallow, 70-80 y 15 NT vs. RT 15 59 Campbell et al. (1996b)
Cantuar, Saskatchewan, Canada NT Cereal-fallow, 70-80 y 15 W vs. W-F 15 -6 Campbell et al. (1996b)
Columbia, Missouri, USA C Grassland 100 NT vs. CT 20 853 Buyanovsky and Wagner (1998), Balesdent et al. (1988), Buyanovsky et al. (1997)
Columbia, Missouri, USA CT (fert.) Grassland 100 C-W-Cl vs. C 20 1112 Buyanovsky and Wagner (1998), Balesdent et al. (1988), Buyanovsky et al. (1997)
Columbia, Missouri, USA CT (0 fert.) Grassland 100 C-W-Cl vs. C 20 1655 Buyanovsky and Wagner (1998), Balesdent et al. (1988), Buyanovsky et al. (1997)
Columbia, Missouri, USA CT (fert.) Grassland 100 C-W-Cl vs. W 20 1112 Buyanovsky and Wagner (1998), Balesdent et al. (1988), Buyanovsky et al. (1997)
Columbia, Missouri, USA CT (0 fert.) Grassland 100 C-W-Cl vs. W 20 1520 Buyanovsky and Wagner (1998), Balesdent et al. (1988), Buyanovsky et al. (1997)
Condobolin, Australia W Cultivated, > 50 y 14 NT vs. RT 10 227 Fettell and Gill (1995)
Cordoba, Argentina S Crop-meadow rotation 15 NT vs. CT 15 834 Chagas et al. (1995)
Cordoba, Argentina S Crop-meadow rotation 15 NT vs. RT 15 675 Chagas et al. (1995)
Cordoba, Argentina S Crop-meadow rotation 15 RT vs. CT 15 159 Chagas et al. (1995)
Corpus Christi, Texas, USA 4 y [C]-4 y Cn CT, many y 12 NT vs. CT 20 560 Potter et al. (1998)
Corpus Christi, Texas, USA 4 y [C]-4 y Cn CT, many y 12 NT vs. RT 20 200 Potter et al. (1998)
Corpus Christi, Texas, USA 4 y [C]-4 y Cn CT, many y 12 RT vs. CT 20 360 Potter et al. (1998)
Corpus Christi, Texas, USA 4 y C-4 y [Cn] CT, many y 12 NT vs. CT 20 340 Potter et al. (1998)
Corpus Christi, Texas, USA 4 y C-4 y [Cn] CT, many y 12 NT vs. RT 20 230 Potter et al. (1998)
Corpus Christi, Texas, USA 4 y C-4 y [Cn] CT, many y 12 RT vs. CT 20 110 Potter et al. (1998)
Crossville, Alabama, USA S CT, row crop, >50 y 10 NT vs. CT 20 1006 Edwards et al. (1992), Wood and Edwards (1992)
Crossville, Alabama, USA C CT, row crop, >50 y 10 NT vs. CT 20 1603 Edwards et al. (1992), Wood and Edwards (1992)
Crossville, Alabama, USA C-S CT, row crop, >50 y 10 NT vs. CT 20 1191 Edwards et al. (1992), Wood and Edwards (1992)
Crossville, Alabama, USA CT CT, row crop, >50 y 10 C-S vs. S 20 -122 Edwards et al. (1992), Wood and Edwards (1992)
Crossville, Alabama, USA NT CT, row crop, >50 y 10 C-S vs. S 20 64 Edwards et al. (1992), Wood and Edwards (1992)
Crossville, Alabama, USA CT CT, row crop, >50 y 10 C-S vs. C 20 -259 Edwards et al. (1992), Wood and Edwards (1992)
Crossville, Alabama, USA NT CT, row crop, >50 y 10 C-S vs. C 20 -671 Edwards et al. (1992), Wood and Edwards (1992)
Culbertson, Montana, USA W Cropped, 4 y 9 NT vs. CT 15 55 Aase and Pikul (1995), Pikul and Aase (1995), J.L. Pikul, pers. comm..
Culbertson, Montana, USA W Cropped, 4 y 9 NT vs. RT 15 -248 Aase and Pikul (1995), Pikul and Aase (1995), J.L. Pikul, pers. comm..
Culbertson, Montana, USA W Cropped, 4 y 9 RT vs. CT 15 303 Aase and Pikul (1995), Pikul and Aase (1995), J.L. Pikul, pers. comm..
Culbertson, Montana, USA CT Cropped, 4 y 9 W-B vs. W 15 33 Aase and Pikul (1995), Pikul and Aase (1995), J.L. Pikul, pers. comm.
Dawson Creek, British Columbia, Canada B N/A 10 NT vs. CT 7.5 901 Arshad et al. (1990)
Edinburgh, Scotland B N/A 24 NT vs. CT 30 2898 Soane and Ball (1998), Ball et al. (1997)
Edinburgh, Scotland B N/A 24 NT vs. CT 30 2735 Soane and Ball (1998)
Eldorado do Sul, Brazil O-C CT, 15 y 9 NT vs. CT 30 460 Bayer et al. (2000)
Eldorado do Sul, Brazil O/V-C/Cp CT, 15 y 9 NT vs. CT 30 640 Bayer et al. (2000)
Eldorado do Sul, Brazil CT CT, 15 y 9 O/V-C/Cp vs. O-C 30 560 Bayer et al. (2000)
Eldorado do Sul, Brazil NT CT, 15 y 9 O/V-C/Cp vs. O-C 30 740 Bayer et al. (2000)
El Reno, Oklahoma, USA W-F CT, W, 9 y 11 NT vs. CT 20 1270 Dao (1998)
Elwood, Illinois, USA C-S N/A 6 NT vs. CT 30 592 Mielke et al. (1986)
Essone, France, USA C CT, W, ~10 y 15 NT vs. CT 30 721 Balesdent et al. (1990)
Fargo, North Dakota, USA S-B-Sf-B N/A 10 NT vs. CT 30 2285 Deibert and Utter (1989)
Fargo, North Dakota, USA S-B-Sf-B N/A 10 NT vs. RT 30 2107 Deibert and Utter (1989)
Fargo, North Dakota, USA S-B-Sf-B N/A 10 RT vs. CT 30 179 Deibert and Utter (1989)
Florence, South Carolina, USA C N/A 7 NT vs. RT 15 452 Karlen et al. (1989)
Giessen, Germany C-C-beet N/A 17 NT vs. CT 25 107 Tebrügge and Düring (1999)
Hoytville, Ohio, USA C CT, C-O, 6 y 18 NT vs. CT 30 2397 Dick et al. (1997), Dick (1983), W.A. Dick, pers. comm.
Hoytville, Ohio, USA C-S CT, C-O, 6 y 18 NT vs. CT 30 1538 Dick et al. (1997), Dick (1983), W.A. Dick, pers. comm.
Hoytville, Ohio, USA C-O-G CT, C-O, 6 y 18 NT vs. CT 30 2187 Dick et al. (1997), Dick (1983), W.A. Dick, pers. comm.
Hoytville, Ohio, USA NT CT, C-O, 6 y 19 C-S vs. C 30 -1722 Dick et al. (1997), Dick (1983), W.A. Dick, pers. comm.
Hoytville, Ohio, USA CT CT, C-O, 6 y 19 C-S vs. C 30 -863 Dick et al. (1997), Dick (1983), W.A. Dick, pers. comm.
Hoytville, Ohio, USA NT CT, C-O, 6 y 19 C-O-G vs. C 30 -14 Dick et al. (1997), Dick (1983), W.A. Dick, pers. comm.
Hoytville, Ohio, USA CT CT, C-O, 6 y 19 C-O-G vs. C 30 224 Dick et al. (1997), Dick (1983), W.A. Dick, pers. comm.
Indiana, USA C N/A 7 NT vs. CT 10 307 Kladivko et al. (1986)
Indiana, USA C-S N/A 7 NT vs. CT 7.5 653 Kladivko et al. (1986)
Indian Head, Saskatchewan, Canada CT (0 fert.) CT, F-W 15 W vs. W-F 40 -111 Campbell et al. (1991a), Campbell et al. (1997), Campbell (2001a)
Indian Head, Saskatchewan, Canada CT (fert.) CT, F-W 15 W vs. W-F 40 162 Campbell et al. (1991a), Campbell et al. (1997), Campbell (2001a)
Indian Head, Saskatchewan, Canada CT (0 fert.) CT, F-W 15 W vs. W-W-F 40 368 Campbell et al. (1991a), Campbell et al. (1997), Campbell (2001a)
Indian Head, Saskatchewan, Canada CT (fert.) CT, F-W 15 W vs. W-W-F 40 -106 Campbell et al. (1991a), Campbell et al. (1997), Campbell (2001a)
Kanawha, Iowa CT N/A 36 C-S vs. C 15 -234 Robinson et al. (1996)
Kanawha, Iowa CT N/A 36 C-C-O-G vs. C 15 527 Robinson et al. (1996)
Kanawha, Iowa CT N/A 36 C-A-G-G vs. C 15 566 Robinson et al. (1996)
Lethbridge, Alberta, Canada N/A Cultivated for ~3 y 78 W vs. W-F 15 230 Monreal and Janzen (1993), Janzen et al. (1997)
Lethbridge, Alberta, Canada N/A Cultivated for ~3 y 78 W vs. W-W-F 15 147 Monreal and Janzen (1993), Janzen et al. (1997)
Lethbridge, Alberta, Canada N/A Cultivated for ~44 y 41 W vs. W-F 30 112 Janzen (1987), Janzen et al. (1997)
Lethbridge, Alberta, Canada N/A Cultivated for ~44 y 41 W vs. W-W-F 30 244 Janzen (1987), Janzen et al. (1997)
Lethbridge, Alberta, Canada Fert. with manure Cultivated for ~44 y 41 W vs. W-W-F 30 -255 Janzen (1987), Janzen et al. (1997)
Lethbridge, Alberta, Canada N/A Cultivated for ~44 y 41 W vs. F-W-W-H-H-H 30 -360 Janzen (1987), Janzen et al. (1997)
Lethbridge, Alberta, Canada W-F Cultivated for ~61 y 24 NT vs. CT 20 -320 Miller et al. (1999)
Lexington, Kentucky, USA C (0 N) Bluegrass, 50 y 20 NT vs. CT 30 788 Blevins et al. (1983a), Blevins et al. (1983b), Ismail et al. (1994)
Lexington, Kentucky, USA C (84 N) Bluegrass, 50 y 20 NT vs. CT 30 383 Blevins et al. (1983a), Blevins et al. (1983b), Ismail et al. (1994)
Lexington, Kentucky, USA C (168 N) Bluegrass, 50 y 20 NT vs. CT 30 392 Blevins et al. (1983a), Blevins et al. (1983b), Ismail et al. (1994)
Lexington, Kentucky, USA C (336 N) Bluegrass, 50 y 20 NT vs. CT 30 696 Blevins et al. (1983a), Blevins et al. (1983b), Ismail et al. (1994)
Lincoln, Nebraska, USA Sm-S N/A 10 NT vs. CT 8 -160 Dickey et al. (1994)
Lincoln, Nebraska, USA Sm-S N/A 10 RT vs. CT 8 633 Dickey et al. (1994)
Lincoln, Nebraska, USA Sm-S N/A 10 NT vs. RT 8 -793 Dickey et al. (1994)
Lincoln, Nebraska, USA Sm-S N/A 10 NT vs. CT 8 301 Dickey et al. (1994)
Lincoln, Nebraska, USA Sm-S N/A 10 RT vs. CT 8 688 Dickey et al. (1994)
Lincoln, Nebraska, USA Sm-S N/A 10 NT vs. RT 8 -388 Dickey et al. (1994)
Mandan, North Dakota, USA W-F (0 N) N/A 7 NT vs. CT 30 -109 Black and Tanaka (1997)
Mandan, North Dakota, USA W-F (0 N) N/A 7 NT vs. RT 30 419 Black and Tanaka (1997)
Mandan, North Dakota, USA W-F (0 N) N/A 7 RT vs. CT 30 -528 Black and Tanaka (1997)
Mandan, North Dakota, USA W-F (20 N) N/A 7 NT vs. CT 30 -634 Black and Tanaka (1997)
Mandan, North Dakota, USA W-F (20 N) N/A 7 NT vs. RT 30 -423 Black and Tanaka (1997)
Mandan, North Dakota, USA W-F (20 N) N/A 7 RT vs. CT 30 -211 Black and Tanaka (1997)
Mandan, North Dakota, USA W-F (40 N) N/A 7 NT vs. CT 30 -1074 Black and Tanaka (1997)
Mandan, North Dakota, USA W-F (40 N) N/A 7 NT vs. RT 30 -332 Black and Tanaka (1997)
Mandan, North Dakota, USA W-F (40 N) N/A 7 RT vs. CT 30 -741 Black and Tanaka (1997)
Mandan, North Dakota, USA W-W-Sf (34 N) N/A 7 NT vs. CT 30 892 Black and Tanaka (1997)
Mandan, North Dakota, USA W-W-Sf (34 N) N/A 7 NT vs. RT 30 890 Black and Tanaka (1997)
Mandan, North Dakota, USA W-W-Sf (34 N) N/A 7 RT vs. CT 30 2 Black and Tanaka (1997)
Mandan, North Dakota, USA W-W-Sf (67 N) N/A 7 NT vs. CT 30 1246 Black and Tanaka (1997)
Mandan, North Dakota, USA W-W-Sf (67 N) N/A 7 NT vs. RT 30 55 Black and Tanaka (1997)
Mandan, North Dakota, USA W-W-Sf (67 N) N/A 7 RT vs. CT 30 1191 Black and Tanaka (1997)
Mandan, North Dakota, USA W-W-Sf (101 N) N/A 7 NT vs. CT 30 1690 Black and Tanaka (1997)
Mandan, North Dakota, USA W-W-Sf (101 N) N/A 7 NT vs. RT 30 914 Black and Tanaka (1997)
Mandan, North Dakota, USA W-W-Sf (101 N) N/A 7 RT vs. CT 30 777 Black and Tanaka (1997)
Mandan, North Dakota, USA CT (low N) N/A 7 W-W-Sf vs. W-F 30 562 Black and Tanaka (1997)
Mandan, North Dakota, USA CT (medium N) N/A 7 W-W-Sf vs. W-F 30 -234 Black and Tanaka (1997)
Mandan, North Dakota, USA CT (high N) N/A 7 W-W-Sf vs. W-F 30 -425 Black and Tanaka (1997)
Mandan, North Dakota, USA NT (low N) N/A 7 W-W-Sf vs. W-F 30 1563 Black and Tanaka (1997)
Mandan, North Dakota, USA NT (medium N) N/A 7 W-W-Sf vs. W-F 30 1646 Black and Tanaka (1997)
Mandan, North Dakota, USA NT (high N) N/A 7 W-W-Sf vs. W-F 30 2339 Black and Tanaka (1997)
Manhattan, Kansas, USA S N/A 11 NT vs. CT 30 307 Havlin et al. (1990), Havlin and Kissel (1997)
Manhattan, Kansas, USA Sm-S N/A 11 NT vs. CT 30 399 Havlin et al. (1990), Havlin and Kissel (1997)
Manhattan, Kansas, USA Sm N/A 11 NT vs. CT 30 54 Havlin et al. (1990), Havlin and Kissel (1997)
Manhattan, Kansas, USA S N/A 12 NT vs. CT 30 -57 Havlin et al. (1990)
Manhattan, Kansas, USA Sm-S N/A 12 NT vs. CT 30 468 Havlin et al. (1990)
Manhattan, Kansas, USA Sm N/A 12 NT vs. CT 30 578 Havlin et al. (1990)
Manhattan, Kansas, USA CT N/A 11 S-Sm vs. S 30 344 Havlin et al. (1990), Havlin and Kissel (1997)
Manhattan, Kansas, USA NT N/A 11 S-Sm vs. S 30 436 Havlin et al. (1990), Havlin and Kissel (1997)
Manhattan, Kansas, USA CT N/A 11 Sm-S vs. Sm 30 -384 Havlin et al. (1990), Havlin and Kissel (1997)
Manhattan, Kansas, USA NT N/A 11 Sm-S vs. Sm 30 -39 Havlin et al. (1990), Havlin and Kissel (1997)
Manhattan, Kansas, USA CT N/A 12 S-Sm vs. S 30 -933 Havlin et al. (1990)
Manhattan, Kansas, USA NT N/A 12 S-Sm vs. S 30 -408 Havlin et al. (1990)
Manhattan, Kansas, USA CT N/A 12 Sm-S vs. Sm 30 -1050 Havlin et al. (1990)
Manhattan, Kansas, USA NT N/A 12 Sm-S vs. Sm 30 -1159 Havlin et al. (1990)
Manhattan, Kansas, USA CT (0 N) N/A 8 C-S vs. S 30 69 Havlin et al. (1990)
Manhattan, Kansas, USA CT (252 N) N/A 8 C-S vs. S 30 293 Havlin et al. (1990)
Manhattan, Kansas, USA CT (0 N) N/A 8 C-S vs. C 30 -263 Havlin et al. (1990)
Manhattan, Kansas, USA CT (252 N) N/A 8 C-S vs. C 30 -266 Havlin et al. (1990)
Mead, Nebraska, USA CT (0 N) N/A 10 C-S vs. C 30 248 Varvel (1994)
Mead, Nebraska, USA CT (0 N) N/A 10 Sm-S vs. S 30 -553 Varvel (1994)
Mead, Nebraska, USA CT (0 N) N/A 10 C-S vs. S 30 -160 Varvel (1994)
Mead, Nebraska, USA CT (0 N) N/A 10 Sm-S vs. Sm 30 -428 Varvel (1994)
Mead, Nebraska, USA CT (0 N) N/A 10 C-O-Sm-S vs. C 30 645 Varvel (1994)
Mead, Nebraska, USA CT (0 N) N/A 10 C-O-Sm-S vs. S 30 237 Varvel (1994)
Mead, Nebraska, USA CT (0 N) N/A 10 C-O-Sm-S vs. Sm 30 362 Varvel (1994)
Mead, Nebraska, USA CT (0 N) N/A 10 C-S-Sm-O vs. C 30 92 Varvel (1994)
Mead, Nebraska, USA CT (0 N) N/A 10 C-S-Sm-O vs. S 30 -316 Varvel (1994)
Mead, Nebraska, USA CT (0 N) N/A 10 C-S-Sm-O vs. Sm 30 -191 Varvel (1994)
Mead, Nebraska, USA CT (90 N) N/A 10 C-S vs. C 30 209 Varvel (1994)
Mead, Nebraska, USA CT (34 N) N/A 10 C-S vs. S 30 -208 Varvel (1994)
Mead, Nebraska, USA CT (34 N) N/A 10 Sm-S vs. S 30 -606 Varvel (1994)
Mead, Nebraska, USA CT (34 N) N/A 10 Sm-S vs. Sm 30 -429 Varvel (1994)
Mead, Nebraska, USA CT (90 N) N/A 10 C-O-Sm-S vs. C 30 479 Varvel (1994)
Mead, Nebraska, USA CT (34 N) N/A 10 C-O-Sm-S vs. S 30 62 Varvel (1994)
Mead, Nebraska, USA CT (34 N) N/A 10 C-O-Sm-S vs. Sm 30 240 Varvel (1994)
Mead, Nebraska, USA CT (90 N) N/A 10 C-S-Sm-O vs. C 30 142 Varvel (1994)
Mead, Nebraska, USA CT (34 N) N/A 10 C-S-Sm-O vs. S 30 -275 Varvel (1994)
Mead, Nebraska, USA CT (34 N) N/A 10 C-S-Sm-O vs. Sm 30 -97 Varvel (1994)
Mead, Nebraska, USA CT (180 N) N/A 10 C-S vs. C 30 -2 Varvel (1994)
Mead, Nebraska, USA CT (68 N) N/A 10 C-S vs. S 30 -271 Varvel (1994)
Mead, Nebraska, USA CT (68 N) N/A 10 Sm-S vs. S 30 -476 Varvel (1994)
Mead, Nebraska, USA CT (68 N) N/A 10 Sm-S vs. Sm 30 -322 Varvel (1994)
Mead, Nebraska, USA CT (180 N) N/A 10 C-O-Sm-S vs. C 30 443 Varvel (1994)
Mead, Nebraska, USA CT (68 N) N/A 10 C-O-Sm-S vs. S 30 174 Varvel (1994)
Mead, Nebraska, USA CT (68 N) N/A 10 C-O-Sm-S vs. Sm 30 328 Varvel (1994)
Mead, Nebraska, USA CT (180 N) N/A 10 C-S-Sm-O vs. C 30 73 Varvel (1994)
Mead, Nebraska, USA CT (68 N) N/A 10 C-S-Sm-O vs. S 30 -176 Varvel (1994)
Mead, Nebraska, USA CT (68 N) N/A 10 C-S-Sm-O vs. Sm 30 -22 Varvel (1994)
Mead, Nebraska, USA RT (fert., herbicide) N/A 16 C-S-C-O/Cl vs. C 15 276 Lesoing and Doran (1997)
Melfort, Saskatchewan, Canada CT (0 fert.) CT, F-W 30 W vs. W-F 15 390 Campbell et al. (1991b), Campbell et al. (1997)
Melfort, Saskatchewan, Canada CT (fert.) CT, F-W 30 W vs. W-F 15 420 Campbell et al. (1991b), Campbell et al. (1997)
Melfort, Saskatchewan, Canada CT (0 fert.) CT, F-W 30 W vs. F-W-W-H-H-W 15 3 Campbell et al. (1991b), Campbell et al. (1997)
Melfort, Saskatchewan, Canada CT (fert.) CT, F-W 30 W vs. F-W-W-H-H-W 15 183 Campbell et al. (1991b), Campbell et al. (1997)
Nashua, Iowa CT N/A 12 C-S vs. C 15 164 Robinson et al. (1996)
Nashua, Iowa CT N/A 12 C-C-O-G vs. C 15 614 Robinson et al. (1996)
North Yorkshire, England B N/A 9 NT vs. CT 20 330 Chaney et al. (1985)
Palmerston North, New Zealand C-O N/A 10 NT vs. CT 20 549 Horne et al. (1992)
Palmerston North, New Zealand C-O N/A 10 RT vs. CT 20 584 Horne et al. (1992)
Palmerston North, New Zealand C-O N/A 10 NT vs. RT 20 -35 Horne et al. (1992)
Pendleton, Oregon, USA W-F (0 N) N/A 44 RT vs. CT 30 324 Rasmussen and Smiley (1997), Rasmussen and Rohde (1988)
Pendleton, Oregon, USA W-F (90 N) N/A 44 RT vs. CT 30 434 Rasmussen and Smiley (1997), Rasmussen and Rohde (1988)
Pendleton, Oregon, USA W-F (135 N) N/A 44 RT vs. CT 30 579 Rasmussen and Smiley (1997), Rasmussen and Rohde (1988)
Pendleton, Oregon, USA W-F (180 N) N/A 44 RT vs. CT 30 548 Rasmussen and Smiley (1997), Rasmussen and Rohde (1988)
Quebec, Canada C Grass meadow, >20 y 11 NT vs. CT 24 216 Angers et al. (1993)
Quebec, Canada C Grass meadow, >20 y 11 NT vs. RT 24 208 Angers et al. (1993)
Quebec, Canada C Grass meadow, >20 y 11 RT vs. CT 24 8 Angers et al. (1993)
Rycroft, Alberta, Canada Canola-W-B-F N/A 6 NT vs. CT 20 190 Franzluebbers and Arshad (1996)
Rycroft, Alberta, Canada Canola-W-B-F N/A 6 NT vs. RT 20 13 Franzluebbers and Arshad (1996)
Rycroft, Alberta, Canada Canola-W-B-F N/A 6 RT vs. CT 20 177 Franzluebbers and Arshad (1996)
Senatobia, Mississippi, USA C Pasture 8 NT vs. CT 15.2 354 Rhoton (2000)
Senatobia, Mississippi, USA CnS Pasture 8 NT vs. CT 15.2 268 Rhoton (2000)
Senatobia, Mississippi, USA S Pasture 8 NT vs. CT 15.2 488 Rhoton (2000)
Sidney, Nebraska, USA W Native grassland 22 NT vs. CT 20 673 Lyon et al. (1997)
Sidney, Nebraska, USA W Native grassland 22 NT vs. RT 20 234 Lyon et al. (1997)
Sidney, Nebraska, USA W Native grassland 22 RT vs. CT 20 439 Lyon et al. (1997)
Sidney, Nebraska, USA W Native grassland 22 NT vs. CT 20 350 Lyon et al. (1997)
Sidney, Nebraska, USA W Native grassland 22 NT vs. RT 20 385 Lyon et al. (1997)
Sidney, Nebraska, USA W Native grassland 22 RT vs. CT 20 -35 Lyon et al. (1997)
Sidney, Nebraska, USA W-F Cultivated for ~47 y 11 NT vs. CT 30 10 Doran et al. (1998)
Sidney, Nebraska, USA W-F Cultivated for ~47 y 11 RT vs. CT 30 -80 Doran et al. (1998)
Sidney, Nebraska, USA W-F Cultivated for ~47 y 11 NT vs. RT 30 90 Doran et al. (1998)
South Charleston, Ohio, USA C CT, C-S 18 NT vs. CT 30 2392 Karlen et al. (1989), Hunt et al. (1996)
South Charleston, Ohio, USA C CT, C-S 18 NT vs. RT 30 2623 Karlen et al. (1989), Hunt et al. (1996)
South Charleston, Ohio, USA C CT, C-S 18 RT vs. CT 30 -231 Karlen et al. (1989), Hunt et al. (1996)
Stewart Valley, Saskatchewan, Canada W N/A 15 NT vs. CT 15 192 Campbell et al. (1996a)
Stewart Valley, Saskatchewan, Canada W-F N/A 15 NT vs. RT 15 404 Campbell et al. (1996a)
Stewart Valley, Saskatchewan, Canada NT N/A 15 W vs. W-F 15 92 Campbell et al. (1996a)
Sutherland, Iowa, USA CT (200 N) Cultivated for ~36 y 34 C-S vs. C 15 95 Robinson et al. (1996)
Sutherland, Iowa, USA CT (135 N) Cultivated for ~36 y 34 C-C-O-G vs. C 15 760 Robinson et al. (1996)
Sutherland, Iowa, USA CT (135 N) Cultivated for ~36 y 34 C-A-G-G vs. C 15 892 Robinson et al. (1996)
Swift Current, Saskatchewan, Canada RT (no N) CT, F-W, ~60 y 23 W vs. W-W-F 15 130 Biederbeck et al. (1984), Campbell and Zentner (1997)
Swift Current, Saskatchewan, Canada RT (N) CT, F-W, ~60 y 23 W vs. W-W-F 15 -120 Biederbeck et al. (1984), Campbell and Zentner (1997)
Swift Current, Saskatchewan, Canada NT CT, F-W, ~70 y 14 W vs. W-F 15 154 Campbell et al. (1995)
Swift Current, Saskatchewan, Canada CT CT, F-W, ~70 y 14 W vs. W-F 15 -29 Campbell et al. (1995)
Swift Current, Saskatchewan, Canada W-F CT, F-W, ~70 y 14 NT vs. CT

15
109 Campbell et al. (1995)
Swift Current, Saskatchewan, Canada W CT, F-W, ~70 y 14 NT vs. CT

15
292 Campbell et al. (1995)
Temple, Texas, USA [W]-Sm-C (28 N) CT, many y 10 NT vs. RT 20 140 Potter et al. (1998)
Temple, Texas, USA [W]-Sm-C (112 N) CT, many y 10 NT vs. RT 20 -110 Potter et al. (1998)
Temple, Texas, USA W-Sm-[C] (28 N) CT, many y 10 NT vs. RT 20 300 Potter et al. (1998)
Temple, Texas, USA W-Sm-[C] (112 N) CT, many y 10 NT vs. RT 20 290 Potter et al. (1998)
Tune, Norway B-O Cultivated ~14 y 13 RT vs. CT 20 191 Børresen and Njøs (1993)
Urbana, Illinois, USA C-S N/A 9 RT vs. CT 30 65 Yang and Wander (1999)
Urbana, Illinois, USA C-S N/A 9 NT vs. RT 30 -312 Yang and Wander (1999)
Urbana, Illinois, USA C-S N/A 9 RT vs. CT 30 377 Yang and Wander (1999)
Urbana, Illinois, USA CT (0 N) N/A 69 C-O-S vs. C 15 733 Darmondy and Peck (1997), Odell et al. (1984)
Urbana, Illinois, USA CT (M, L, P) N/A 69 C-O-S vs. C 15 534 Darmondy and Peck (1997), Odell et al. (1984)
Urbana, Illinois, USA CT (0 N) N/A 69 C-O-H vs. C 15 1267 Darmondy and Peck (1997), Odell et al. (1984)
Urbana, Illinois, USA CT (M, L, P) N/A 69 C-O-H vs. C 15 1959 Darmondy and Peck (1997), Odell et al. (1984)
Vienna, Illinois, USA C-S Tall fescue, >10 y 7 NT vs. CT 15 617 Kitur et al. (1994), Hussain et al. (1998), Hussain et al. (1999)
Vienna, Illinois, USA C-S Tall fescue, >10 y 7 RT vs. CT 15 -253 Kitur et al. (1994), Hussain et al. (1998), Hussain et al. (1999)
Vienna, Illinois, USA C-S Tall fescue, >10 y 7 NT vs. RT 15 870 Kitur et al. (1994), Hussain et al. (1998), Hussain et al. (1999)
Wagga Wagga, Australia W-lupin Pasture, 2 y 10 NT vs. CT 20 569 Chan et al. (1992)
Wagga Wagga, Australia W-lupin Pasture, 2 y 10 RT vs. CT 20 -62 Chan et al. (1992)
Wagga Wagga, Australia W-lupin Pasture, 2 y 10 NT vs. RT 20 631 Chan et al. (1992)
Warra, Australia W (0 N) Cultivated, cereal, 50 y 10 NT vs. CT 10 97 Dalal et al. (1995), Hossain et al. (1996)
Warra, Australia W (25 N) Cultivated, cereal, 50 y 10 NT vs. CT 10 190 Dalal et al. (1995), Hossain et al. (1996)
Warra, Australia W (75 N) Cultivated, cereal, 50 y 10 NT vs. CT 10 262 Dalal et al. (1995), Hossain et al. (1996)
Warra, Australia CT, W (0 N) Cultivated, cereal, 50 y 10 W-Legume vs. W 10 138 Dalal et al. (1995), Hossain et al. (1996)
Warra, Australia CT, W (0 N) Cultivated, cereal, 50 y 10 W-G/legume vs. W 10 234 Dalal et al. (1995), Hossain et al. (1996)
Warwick, Australia W-B CT, 13 y 20 NT vs. CT 10 413 Dalal (1989), Dalal et al. (1991)
Warwick, Australia W-B CT, 13 y 20 NT vs. CT 10 433 Dalal (1989), Dalal et al. (1991)
Warwick, Australia W-B CT, 13 y 20 NT vs. CT 10 374 Dalal (1989), Dalal et al. (1991)
Waseca, Minnesota, USA C-A N/A 11 NT vs. CT 15 650 Mielke et al. (1986)
Waseca, Minnesota, USA C N/A 6 NT vs. CT 30 -2 Mielke et al. (1986)
Woodslee, Ontario, Canada CT (No N) Maize, alfalfa, and red clover, >15 y 35 C-O-A-A vs. C 70 1390 Gregorich et al. (2001)
Woodslee, Ontario, Canada CT (N) Maize, alfalfa, and red clover, >15 y 35 C-O-A-A vs. C 70 2450 Gregorich et al. (2001)
Wooster, Ohio, USA C Grass meadow, 6 y 19 NT vs. CT 30 1236 Dick et al. (1997), Mahboubi et al. (1993), Lal et al. (1994), W.A. Dick, pers. comm.
Wooster, Ohio, USA C-S Grass meadow, 6 y 19 NT vs. CT 30 1568 Dick et al. (1997), Mahboubi et al. (1993), Lal et al. (1994), W.A. Dick, pers. comm.
Wooster, Ohio, USA C-S Grass meadow, 6 y 19 NT vs. RT 30 1317 Dick et al. (1997), Mahboubi et al. (1993), Lal et al. (1994), W.A. Dick, pers. comm.
Wooster, Ohio, USA C-S Grass meadow, 6 y 19 RT vs. CT 30 251 Dick et al. (1997), Mahboubi et al. (1993), Lal et al. (1994), W.A. Dick, pers. comm.
Wooster, Ohio, USA C-O-G Grass meadow, 6 y 19 NT vs. CT 30 1603 Dick et al. (1997), Mahboubi et al. (1993), Lal et al. (1994), W.A. Dick, pers. comm.
Wooster, Ohio, USA NT Grass meadow, 6 y 19 C-S vs. C 30 366 Dick et al. (1997), Mahboubi et al. (1993), Lal et al. (1994), W.A. Dick, pers. comm.
Wooster, Ohio, USA CT Grass meadow, 6 y 19 C-S vs. C 30 33 Dick et al. (1997), Mahboubi et al. (1993), Lal et al. (1994), W.A. Dick, pers. comm.
Wooster, Ohio, USA NT Grass meadow, 6 y 19 C-O-G vs. C 30 -45 Dick et al. (1997), Mahboubi et al. (1993), Lal et al. (1994), W.A. Dick, pers. comm.
Wooster, Ohio, USA CT Grass meadow, 6 y 19 C-O-G vs. C 30 -412 Dick et al. (1997), Mahboubi et al. (1993), Lal et al. (1994), W.A. Dick, pers. comm.

1Values in parentheses represent nitrogen (N) application rate in kg ha-1 y-1. Brackets represent the crop during or after which the soil samples were taken. CT, RT, and NT refer to conventional tillage, reduced tillage, and no-till, respectively. Treatments with varying fertilizer application rates or crop sequences were averaged prior to analysis. Abbreviations:

  • A, alfalfa (Medicago sativa L.)
  • B, barley (Hordeum vulgare L.)
  • C, corn or maize (Zea mays L.)
  • Cl, clover (Trifolium sp.)
  • Cn, cotton (Gossypium hirsutum L.)
  • Cp, cowpea (Vigna unguiculata L.)
  • F, fallow
  • Fert., unspecified fertilizer rate
  • G, grass
  • H, hay
  • L, lime
  • M, manure
  • O, oats (Avena spp.)
  • Ps, pasture
  • P, phosphorus
  • S, soybean (Glycine max L.)
  • Sf, sunflower (Helianthus annuus L.)
  • Sm, sorghum (Sorghum spp.)
  • V, vetch ( Vicia sativa L.)
  • W, wheat (Triticum aestivum L.)
  • N/A is not available.

2Treatments are arranged as the management intended to sequester soil organic carbon versus the conventional management (e.g., NT vs. CT; soybean-sunflower vs. continuous soybean).

3Calculated using SOM to SOC conversion factor of 0.58 and estimates of soil bulk density where necessary (see full text for further explanation).