Residue management, conservation tillage and soil restoration for mitigating greenhouse effect by CO2-enrichment

Soil and Tillage Research

Volumn 43, Issue 1-2, 1997, Pages 81-107

  Lal, R ^a  

^a OHIO STATE UNIVERSITY   (United States)

Author keywords

Aggregation; Crop residue management; Greenhouse effect; Land restoration; Soil carbon dynamics

Indexed keywords

CARBON; CARBON SEQUESTRATION; CONSERVATION TILLAGE; CROP RESIDUE; CROP RESIDUES; GLOBAL CARBON CYCLE; GREENHOUSE EFFECT; SEQUESTRATION; SOIL MANAGEMENT; SOIL RESTORATION;

EID: 0031446088     PISSN: 01671987     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0167-1987(97)00036-6     Document Type: Conference Paper

References (141)

1. Albrecht, A., Brossard, M., Feller, C., 1986. Etude de la matiere organique des sols par fractionnement granulometrique. 2. Augmentation par une prairie Digitaria decumbens du stock organique de Vertisols cultives en Martinique. Proc. 13th Cong. ISSS, Hamburg, Germany.
2. Angers, D.A., Samson, N., Legégé, A., 1993. Early changes in water stable aggregation induced by rotation and tillage in a soil under barley production. Can. J. Soil Sci. 73, 51-59.
3. Arshad, M.A., Schnitzer, M., Angers, D.A., Ripmeester, J.P., 1990. Effects of till and no-till on the quality of soil organic matter. Soil Bio. Biochem. 22, 595-599.
4. 13C natural abundance. Soil Sci. Soc. Am. J. 52, 118-124.
5. Balesdent, J., Petraud, J.P., Feller, C., 1991. Effets des ultrasons sur la distribution granulométrique des matiéres organiques des soils. Science du Sol 29, 95-106.
6. Bauer, A., Black, A.L., 1981. Soil carbon, nitrogen, and bulk density comparisons in two tillage systems after 25 years and in virgin grassland. Soil Sci. Soc. Am. J. 45, 1166-1170.
7. Beare, M.H., Parmelee, R.W., Hendrix, P.F., Cheng, W., Coleman, D.C., Crossley, D.A., 1992. Microbial and faunal interactions and effects on litter nitrogen and decomposition in agro-ecosystems. Ecol. Mono. 62, 569-591.
8. Beare, M.H., Pohland, B.R., Wright, D.H., Coleman, D.C., 1993. Residue placement and fungicide effects on fungal communities in conventional and no-tillage soils. Soil Sci. Soc. Am. J. 57, 392-399.
9. Beare, M.H., Hu, S., Coleman, D.C., Hendrix, P.F., 1995. Influence of mycelial fungi on aggregation and soil organic matter retention in conventional and no-tillage soil. Soil Sci. Soc. Am. J. (in press).
10. Beare, M.H., Hendrix, P.F., Coleman, D.C., 1994a. Water-stable aggregates and organic matter fractions in conventional and no-tillage soils. Soil Sci. Soc. Am. J. 58, 777-786.
11. Beare, M.H., Cabrera, M.L., Hendrix, P.F., Coleman, D.C., 1994b. Aggregate-protected and unprotected pools of organic matter in conventional and no-tillage soils. Soil Sci. Soc. Am. J. 58, 787-795.
12. Blevins, R.L., Frye, W.F., 1993. Conservation tillage: an ecological approach to soil management. Adv. Agron. 51, 34-77.
13. Blevins, R.L., Smith, M.S., Thomas, G.W., Frye, W.W., 1983a. Influence of conservation tillage on soil properties. J. Soil Water Conserv. 38, 301-305.
14. Blevins, R.L., Thomas, G.W., Smith, M.S., Frye, W.W., Cornelius, P.J., 1983b. Influence of conservation tillage on soil properties. J. Soil Water Conserv. 38, 135-146.
15. 13C abundance in particle size fractions of forested and cultivated Oxisols. Soil Biol. Biochem. 24, 275-277.
16. Bouwman, A.F., 1989. Background, Part II. In: Bouwman, A.F. (Ed.), Soils and the Greenhouse Effect. Wiley, New York, NY.
17. Bouwman, R.A., Reeder, J.D., Lober, R.W., 1990. Changes in soil properties in a central plains rangeland soil after 3, 20 and 60 years of cultivation. Soil Sci. 150, 851-857.
18. Camberdella, C.A., Elliott, E.T., 1992. Particulate soil organic matter changes across a grassland cultivation sequence. Soil Sci. Soc. Am. J. 56, 777-783.
19. Cannell, R.Q., 1985. Reduced tillage in northwest Europe: a review. Soil Tillage Res. 5, 129-177.
20. Carter, M.R., 1992. Influence of reduced tillage systems on organic matter, microbial biomass, macro-aggregate distribution and structural stability of surface soil in the humid climate. Soil Tillage Res. 23, 361-372.
21. Carter, M.R. (Ed.), 1994. Conservation Tillage in Temperate Agroecosystems. Lewis Publishers, Boca Raton, FL, 390 pp.
22. Carter, M.R., 1995. Analysis of soil organic matter storage in agroecosystems. In: Carter, M.R., Stewart, B.A. (Eds.), Structure and Organic Matter Storage in Agricultural Soils, CRC/Lewis Publishers, Boca Raton, FL, pp. 3-11.
23. 13C, a le tude de la dynamique de la matiere organique dans les sols. C.R. Acad. Sci. Paris, Ser. II 300, 423-428.
24. Chaney, K., Swift, R.S., 1984. The influence of organic matter on aggregate stability in some British soils. J. Soil Sci. 37, 329-335.
25. Chaney, K., Swift, R.S., 1986a. Studies on aggregate stability: I. Reformation of soil aggregates. J. Soil Sci. 37, 329-335.
26. Chaney, K., Swift, R.S., 1986b. Studies on aggregate stability: II. The effect of humic substances on the stability of reformed soil aggregates. J. Soil Sci. 37, 337-343.
27. Chaney, K., Hodgson, D.R., Braim, M.A., 1985. The effects of direct drilling shallow cultivation and ploughing on some soil physical properties in a long-term experiment on spring barley. J. Agric. Sci. 104, 125-133.
28. Charreau, C., Nicou, R., 1971. L'amelioration du profil cultural dans les sols sableux et sablo argileux de la zone tropicale seche ouest Africaine et ses incidences agronomiques. Agron. Trop. 26, 209-255, 565-631, 903-978.
29. Christensen, B.T., 1995. Carbon in primary and secondary organo-mineral complexes. In: Carter, M.R., Stewart, B.A. (Eds.), Structure and Organic Matter Storage in Agricultural Soils, CRC/Lewis Publishers, Boca Raton, FL, pp. 97-165.
30. Collis-George, N., Lal, R., 1970. Infiltration into columns of swelling soil as studied by high speed photography. Aust. J. Soil Res. 9, 107-116.
31. Chihacek, L.J., Ulmer, M.G., 1995. Estimated soil carbon losses from long-term crop fallow in the northern Great Plains of USA. In: Lal, R., Kimble, J.M., Levine, E., Stewart, B.A. (Eds.), Soil Management and Greenhouse Effect. CRC/Lewis Publishers, Boca Raton, FL, pp. 85-91.
32. Choudhary, M.A., Baker, C.J., 1994. Overcoming constraints to conservation tillage in New Zealand. In: Carter, M.R. (Ed.), Conservation Tillage in Temperate Agroecosystems, Lewis Publishers, Boca Raton, FL, pp. 183-207.
33. Christian, D.G., Ball, B.C., 1994. Reduced cultivation and direct drilling for cereals in Great Britain. In: Carter, M.R. (Ed.), Conservation Tillage in Temperate Agroecosystems, Lewis Publishers, Boca Raton, FL, pp. 117-140.
34. Clay et al., 1985.
35. Crosson, P., 1981. Conservation tillage and conventional tillage: a comparative assessment. Soil Water Conservation Soc., Ankeny, IA.
36. CTIC, 1990. Natl. Survey of Conservation Tillage Practices. Conservation Tillage Information Center, West Lafayette, IN.
37. CTIC, 1995. Natl. Crop Residue Management Survey: Executive Summary. Conservation Tillage Information Center, West Lafayette, IN, 21 pp.
38. Dalal, R.C., 1989. Long-term effects of no-tillage, crop residue and nitrogen application on properties of a Vertisol. Soil Sci. Soc. Am. J. 53, 1511-1515.
39. Dalal, R.C., Mayer, R.J., 1986a. Long-term trends in fertility of soils under continuous cultivation and cereal cropping in Southern Queensland: I. Overall changes in soil properties and trends in winter cereal yields. Aust. J. Soil Res. 24, 265-279.
40. Dalal, R.C., Mayer, R.J., 1986b. Long-term trends in fertility of soils under continuous cultivation and cereal cropping in Southern Queensland: II. Total organic carbon and its rate of loss from soil profile. Aust. J. Soil Res. 24, 281-292.
41. Dalal, R.C., Mayer, R.J., 1986c. Long-term trends in fertility of soils under continuous cultivation and cereal cropping in Southern Queensland: III. Distribution and kinetics of soil organic carbon in particle size fractions. Aust. J. Soil Res. 24, 293-300.
42. Dalal, R.C., Mayer, R.J., 1986d. Long-term trends in fertility of soils under continuous cultivation and cereal cropping in Southern Queensland: IV. Loss of organic carbon from different density fractions. Aust. J. Soil Res. 24, 301-309.
43. Dalal, R.C., Bridge, B.J., 1995. Aggregation and organic matter storage in subhumid and semiarid soils. In: Carter, M.R., Stewart, B.A. (Eds.), Structure and Organic Matter Storage in Agricultural Soils, CRC/Lewis Publishers, Boca Raton, FL, pp. 263-307.
44. Dick, W.A., 1983. Organic carbon, nitrogen and phosphorus concentrations and pH in soil profiles as affected by tillage intensity. Soil Sci. Soc. Am. J. 47, 102-107.
45. Dick, W.A., Van Doren, D.M. Jr., Triplett, G.B. Jr., Henry, J.E., 1986a. Influence of long-term tillage and rotation combinations on crop yields and selected soil parameters: I. Results obtained for a Mollic Ochraqualf soil. OARDC Res. Bull. 1180, Wooster, OH, 30 pp.
46. Dick, W.A., Van Doren Jr., D.M., Triplett Jr., G.B., Henry, J.E., 1986b. Influence of long-term tillage and rotation combinations on crop yields and selected soil parameters: II. Results obtained for a Typic Fragiudalf soil. OARDC Res. Bull. 1181, Wooster, OH, 34 pp.
47. Doran, J.W., 1980. Soil microbial and biochemical changes associated with reduced tillage. Soil Sci. Soc. Am. J. 44, 765-771.
48. Doran, J.W., Varvel, G.E., Culley, J.L.B., 1994. Tillage and residue management effects on soil quality and sustainable land management. In: Wood, R.C., Dumanski, J. (Eds.), Sustainable Land Management For The 21st Century Vol. 2, Plenary Papers. Univ. of Lethbridge, Canada, pp. 59-74.
49. Douglas, J.T., GOSS, M.J., 1982. Stability and organic matter content of surface soil aggregates under different methods of cultivation and in grassland. Soil Tillage Res. 2, 155-175.
50. Edwards, W.M., Shipitalo, M.J., Owens, L.B., Dick, W.A., 1993. Factors affecting preferential flow of water and atrazine through earthworm burrows under continuous no-till corn. J. Environ. Qual. 22, 453-457.
51. Ehlers, W., Claupein, W., 1994. Approaches towards conservation tillage in Germany. In: Carter, M.R. (Ed.), Conservation Tillage in Temperate Agroecosystems, Lewis Publishers, Boca Raton, FL, pp. 141-165.
52. Elliott, E.T., 1986. Aggregate structure and carbon, nitrogen and phosphorus in native and cultivated soils. Soil Sci. Soc. Am. J. 50, 627-633.
53. Elliott, E.T., Coleman, D.C., 1988. Let the soil work for us. Ecol. Bull. 39, 23-32.
54. Engelman, R., Le Roy, P., 1995. Conserving land: population and sustainable food production. Population Action Int., Washington, DC, 48 pp.
55. Eswaran, H., Van den Berg, E., Reich, P., 1993. Organic carbon in soils of the world. Soil Sci. Soc. Am. J. 57, 192-194.
56. Eswaran, H., Van den Berg, E., Reich, P., Kimble, J., 1995. Global soil carbon resources. In: Lal, R., Kimble, J., Levine, E., Stewart, B.A. (Eds.), Soils and Global Change, CRC/Lewis Publishers, Boca Raton, FL, pp. 27-43.
57. FAO, 1993. Production yearbook. FAO, Rome, Italy, 254 pp.
58. Feller, C., 1988. Effet de different systemes de culture sur les stocks organiques de sols argileux tropicaux des Petites Antilles. Cahier ORSTOM, Ser. Pedologie 24, 341-343.
59. Feller, C., Burtin, G., Gerard, B., Balesdent, J., 1991a. Utilisation des resines sodiques et des ultrasons dans le fractionnement granulometrique de la matiere organique des sols. Interet et limites. Science Sol. 29, 77-94.
60. 13C en abondance naturelle. Cah. ORSTOM, ser. Pedol. 26, 365-370.
61. Feller, C., Francois, C., Villemin, G., Portal, J.M., Toutain, F., Morel, J.L., 1991c. Nature des matieres organiques associees aux fractions argileuses d'un sol ferrallitique. C.R. Acad. Sci., Paris, Ser. 2, 1491-1497.
62. Feller, C., Fritsch, E., Poss, R., Valentin, C., 1991d. Effets de la texture sur le stockage et la dynamique des matieres organiques dans quelques sols ferrugineux et ferrallitiques (Afrique de l'Ouest, en particulier). Cah. ORSTOM, ser. Pedol. 26, 25-36.
63. Feller, C., Albrecht, A., Tessier, D., 1995. Aggregation and organic matter storage in Kaolinitic and smectitic tropical soils. In: Carter, M.R., Stewart, B.A. (Eds.), Structure and Organic Matter Storage in Agricultural Soils, CRC/Lewis Publishers, Boca Raton, FL, pp. 309-359.
64. Follett, R.F., Gupta, S.C., Hunt, P.C., 1987. Conservation practices. Relation to the management of plant nutrients for crop production. In: Follett, R.F., Stewart, J.W.B., Cole, C.V. (Eds.), Soil Fertility and Organic Matter as Critical Components of Production Systems. ASA Spec. Publ. 19. ASA, CSSA and SSSA, Madison, WI, pp. 19-51.
65. Frye, W.W., Blevins, R.L., Smith, M.S., Croak, S.J., Varco, J.J., 1988. Role of annual legume cover crops in efficient use of water and nitrogen. In: Cropping Strategies For Efficient Use of Water and Nitrogen, ASA-CSSA-SSSA Special Publication 51, Madison, WI, pp. 129-154.
66. Gatson, G.G., Kolchugina, T., Vinson, T.S., 1993. Potential effect of no-till management on carbon in the agricultural soils of the former Soviet Union. Agric. Ecosyst., Environ. 45, 295-309.
67. Glendining, M.J., Powlson, D.S., 1995. The effects of long continued applications of inorganic N fertilizer on soil organic matter: A review. In: Lal, R., Stewart, B.A. (Eds.), Soil Management: Experimental Basis for Sustainability and Environmental Quality. CRC/Lewis Publishers, Boca Raton, FL, 385-445.
68. Goldberg, J., Suarez, D.L., Glaubig, R.A., 1988. Factors affecting clay dispersion and aggregate stability of arid zone soils. Soil Sci. 146, 317-325.
69. Gregorich, E.G., Kachanoski, R.G., Voroney, R.P., 1989. Carbon mineralization in soil size fractions after various amounts of aggregate disruption. J. Soil Sci. 40, 649-659.
70. Gregorich, E.G., Carter, M.R., Angers, D.A., Monreal, C.M., Ellert, B.H., 1994. Towards a minimum data set to assess soil organic matter quality in agricultural soils. Can. J. Soil Sci. 74, 367-385.
71. Hamblin, A.P., 1980. Changes in aggregate stability and associated organic matter properties after direct drilling and plowing on some Australian soils. Aust. J. Soil Res. 18, 27-36.
72. Hamblin, A.P., Davies, D.B., 1977. Influence of organic matter on the soil physical properties of some East Anglian soils of high silt content. J. Soil Sci. 28, 11-22.
73. Havlin, J.L., Kissel, D.E., Maddux, L.D., Claassen, M.M., Long, J.H., 1990. Crop rotation and tillage effects on soil organic carbon and nitrogen. Soil Sci. Soc. Am. J. 54, 448-452.
74. Haynes, R.J., Knight, T.L., 1989. Comparison of soil chemical properties, enzyme activities, levels, of biomass N and aggregate stability in the soil profile under conventional and no-tillage in Canterbury, New Zealand. Soil Tillage Res. 14, 197-208.
75. Haynes, R.J., Swift, R.S., 1990. Stability of soil aggregates in relation to organic constituents and soil water. J. Soil Sci. 41, 73-83.
76. Haynes, R.J., Swift, R.S., Stephen, R.C., 1991. Influence of mixed cropping rotations (pasture-arable) on organic matter content, water stable aggregation and clod porosity in a group of soils. Soil Tillage Res. 19, 77-87.
77. Horne, D.J., Ross, C.W., Hughes, K.A., 1992. Ten years of maize/oats rotation under three tillage systems on a silt loam in New Zealand: I. A comparison of some soil properties. Soil Tillage Res. 22, 131-143.
78. Houghton, R.A., 1995. Changes in the storage of terrestrial carbon since 1950. In: Lal, R., Kimble, J., Levine E., Stewart, B.A. (Eds.), Soils and Global Change. CRC/Lewis Publishers, Boca Raton, FL, pp. 45-65.
79. Huggins, D.R., Allmaras, R.R., Clapp, C.E., Lamb, J.A., 1995. Carbon sequestration in corn-soybean agroecosystems. In: Lal, R., Kimble, J.M., Levine, E., Stewart, B.A. (Eds.), Soil Management and Greenhouse Effect. CRC/Lewis Publishers, Boca Raton, FL, pp. 61-67.
80. Ike, I.P., 1986. Soil and crop responses to different tillage practices in a ferruginous soil in the Nigerian savanna. Soil Tillage Res. 6, 261-272.
81. Intergovernmental Panel on Climate Change, 1995. Agricultural options for mitigation of greenhouse gas emissions. IPCC Workgroup II, Chapter 23, Washington, D.C.
82. Jenkinson, D.S., 1991. The Rothamsted long-term experiments: are they still of use?. Agron. J. 83, 2-10.
83. Kern, J.S., Johnson, M.G., 1991. The impact of conservation tillage use on soil and atmospheric carbon in the contiguous United States. Man Tech Environmental Technology, USEPA, Corvallis, OR, 28 pp.
84. Kern, J.S., Johnson, M.G., 1993. Conservation tillage impacts on national soil and atmospheric carbon levels. Soil Sci. Soc. Am. J. 57, 200-210.
85. Lal, R., 1982. Conservation Tillage. IITA monograph 3, Ibadan, Nigeria, 78 pp.
86. Lal, R., 1989. Conservation tillage for sustainable agriculture: tropics vs. temperate environments. Adv. Agron. 42, 85-197.
87. Lal, R., 1993. Soil degradatioin, soil quality and soil resilience. Soil Tillage Res. 29, 1-8.
88. Lal, R., 1995. The role of residues management in sustainable agricultural systems. J. Sustainable Agric. 5, 51-78.
89. Lal, R., Stewart, B.A., 1994. Soil processes and water quality. In: Lal, R., Stewart, B.A. (Eds.), Soil Processes and Water Quality, Lewis Publishers, Boca Raton, FL, pp. 1-6.
90. Lal, R., Logan, T.J., 1995. Agricultural activities and greenhouse gas emissions from soils of the tropics. In: Lal, R., Kimble, J., Levine, E., Stewart, B.A. (Eds.), Soil Management and Greenhouse Effect, CRC/Lewis Publishers, Boca Raton, FL, pp. 293-307.
91. Lal, R., Logan, T.J., Fausey, N.R., 1990a. Long-term tillage effects on a Mollic Ochraqualf in northwest Ohio: I. Soil physical properties, root distribution and grain yield of corn and soybean. Soil Till. Res. 15, 341-358.
92. Lal, R., Logan, T.J., Fausey, N.R., 1990b. Long-term tillage effects on a Mollic Ochraqualf in northwest Ohio: III. Soil nutrient profile. Soil and Till. Res. 15, 371-382.
93. Lal, R., Mahboubi, A.A., Fausey, N.R., 1994. Long-term tillage and rotation effects on properties of a central Ohio soil. Soil Sci. Soc. Am. J. 58, 517-522.
94. Lal, R., Kimble, J., Levine, E., Whitman, C., 1995. World soils and greenhouse effect: an overview. In: Lal, R., Kimble, J., Levine, E., Stewart, B.A. (Eds.), Soils and Global Change, CRC/Lewis Publishers, Boca Raton, FL, pp. 1-8.
95. Larson, W.E., Holt, R.F., Carlson, C.W., 1978. Residues for soil conservation. In: Oschwald, W.R. (Ed.), Crop Residue Management System. ASA Special Publication 31, 1-15.
96. Lee, J.J., Phillips, D.L., Liu, R., 1993. The effect of trends in tillage practices on erosion and carbon content of soils in the US corn belt. Water, Air, Soil Pollut. 70, 389-407.
97. Lepsch, I.F., Da Silva, N.M., Espironelo, A., 1982. Relacao entre materia organica e textura de solos sob cultivo de algodao e cana-de-acucar, no estado de Sao Paolo. Braganita 41, 231-236.
98. Lucas, R.E., Holtman, J.B., Cooner, L.J., 1977. Soil carbon and cropping practices. In: Lockeretz, W. (Ed.), Agriculture and Energy. Academic Press, New York, NY, pp. 333-351.
99. Mahboubi, A.A., Lal, R., Fausey, N.R., 1993. Twenty-eight years of tillage effects on two soils in Ohio. Soil Sci. Soc. Am. J. 57, 506-512.
100. Mann, I.K., 1986. Changes in soil carbon storage after cultivation. Soil Sci. 142, 279-288.
101. Mannering, J.V., Fenster, C.R., 1983. What is conservation tillage?. J. Soil Water Conserv. 38, 141-143.
102. 13C natural abundance measurements. Soil Biol. Biochem. 22, 517-523.
103. Masse, J. Boisgontier, D., Badet, J.M., Gillet, J.P., 1994. Feasibility of minimum tillage practices for annual cropping systems in France. In: Carter, M.R. (Ed.), Conservation Tillage in Temperate Agroecosystems. Lewis Publishers, Boca Raton, FL, 167-179.
104. Morra, M.J., Blank, R.R., Freeborn, L.L., Shafii, B., 1991. Size fraction of soil organo-mineral complexes using ultrasonic dispersion. Soil Sci. 152, 294-303.
105. Oades, J.M., Waters, A.G., 1991. Aggregate hierarchy in soils. Aust. J. Soil Res. 29, 815-828.
106. Office of Technology Assessment, 1982. Impact of technology on U.S. cropland and rangeland productivity. Cong. Bd., 97th Congress, Washington, DC, 266 pp.
107. Oldeman, L.R., 1994. The global extent of soil degradation. In: Greenland, D.J., Szabolcs, I. (Eds.), Soil Resilience and Sustainable Land Use, CAB Int., Wallingford, UK, pp. 99-118.
108. Perfect, E., Kay, B.D., Van Loon, W.K.P., Sheard, R.W., Pojasok, T., 1990. Factors influencing soil structural stability within a growing season. Soil Sci. Soc. Am. J. 54, 173-179.
109. Post, W.M., Peng, T.H., Emaniel, W.R., King, A.W., Dale, V.H., DeAngelis, D.I., 1990. The global carbon cycle. Am. Sci. 78, 310-326.
110. Powlson, D.S., Jenkinson, D.S., 1981. A comparison of the organic matter, biomass, adenosine triphosphate and mineralizable nitrogen contents of ploughed and direct-drilled soils. J. Agric. Sci. Camb. 97, 713-721.
111. Prove, B.G., Loch, R.J., Foley, J.L., Anderson, V.J., Younger, D.R., 1990. Improvements in aggregation and infiltration characteristics of a Krasnozern under maize with direct drill and stubble retention. Aust. J. Soil Res. 28, 577-590.
112. Rasmussen, P.E., Rohde, C.R., 1988. Long-term tillage and nitrogen fertilization effects on organic nitrogen and carbon in a semiarid soil. Soil Sci. Soc. Am. J. 52, 1114-1117.
113. Rasmussen, P.E., Collins, H.P., 1991. Long-term effects of tillage, fertilizer and crop residue on soil organic matter in temperate semiarid regions. Adv. Agron. 49, 93-134.
114. Resck, D.V.S., da Silva, J.E., 1990. Soil organic matter dynamics under different tillage systems in the Cerrados region in Brazil. Proc. 14th Cong. ISSS, Kyoto, Japan.
115. Riley, H., Borresen, T., Ekeberg, E., Rydberg, T., 1994. Trends in reduced tillage research and practice in Scandinavia. In; Carter, M.R. (Ed.), Conservation Tillage in Temperate Agroecosystems. Lewis Publishers , Boca Raton, FL, pp. 23-45.
116. Robertson, E.B., Sarig, S., Firestone, M.K., 1991. Cover crop management of polysaccharide-mediated aggregation in an orchard soil. Soil Sci. Soc. Am. J. 55, 734-739.
117. Sanchez, P.A., Gichuru, M.P., Katz, L.B., 1982. Organic matter in major soils of the tropical and temperate regions. Trans. 12th Intl. Cong. Soil Sci., New Delhi 1, pp. 99-114.
118. Schertz, D.L., 1988. Conservation tillage: an analysis of acreage projections in the United States. J. Soil Water Conserv. 43, 256-258.
119. Schlesinger, W.H., 1990. Evidence from chronosequence studies for a low carbon storage potential of soils. Nature 348, 232-234.
120. Schlesinger, W.H., 1995. An overview of the carbon cycle. In: Lal, R., Kimble, J., Levine, E., Stewart, B.A. (Eds.), Soils and Global Change. CRC/Lewis Publishers, Boca Raton, FL, 9-26.
121. Skidmore, E.L., Layton, J.B., Armbrust, D.V., Hooker, M.L., 1986. Soil physical properties as influenced by cropping and residue management. Soil Sci. Soc. Am. J. 50, 415-419.
122. Steed, G.R., Ellington, A., Pratley, J.E., 1994. Conservation tillage in the Southeastern Australian wheat-sheep belt. In: Carter, M.R. (Ed), Conservation Tillage in Temperate Agroecosystems, Lewis Publishers, Boca Raton, FL, 231-251.
123. Stevenson, F.J., 1982. Humus chemistry. Wiley, New York, NY.
124. Stevenson, F.J., Elliott, E.T., 1989. Methodologies for assessing the quantity and quality of soil organic matter content. In: Doleman, D.C. et al. (Eds.), Dynamics of Soil Organic Matter in Tropical Ecosystems, Univ. of Hawaii Press, Honolulu, pp. 173-199.
125. Tanchandsponge, S., Davidson, J.M., 1970. Bulk density, aggregate stability, and organic matter content as influenced by two wheatland soil management practices. Soil Sci. Soc. Am. Proc. 34, 305-320.
126. 2 budget. Science 247, 1431-1438.
127. Tate, R.L., 1987. Soil Organic Matter. Biological and Ecological Effects. Wiley, New York, NY.
128. Theng, B.K.G., Tate, K.R., Sollins, P., 1989. Constituents of organic matter in temperate and tropical soils. In: Coleman, D.C. et al. (Eds.), Dynamics of Soil Organic Matter in Tropical Ecosystems, Univ. of Hawaii Press, Honolulu, 5-31.
129. Tiessen, H., Stewart, J.W.B., 1983. Particle-size fractions and their use in studies of soil organic matter: II. Cultivation effect on organic matter composition in size fractions. Soil Sci. Soc. Am. J. 47, 509-514.
130. Tisdall, J.M., 1995. Formation of soil aggregates and accumulation of soil organic matter. In: Carter, M.R., Stewart, B.A. (Eds.), Structure and Organic Matter Storage in Agricultural Soils. CRC/Lewis Publishers, Boca Raton, FL, 57-96.
131. Tisdall, J.M., Oades, J.M., 1980. The effect of crop rotation on aggregation in a red-brown earth. Aust. J. Soil Res. 18, 23-433.
132. Tisdall, J.M., Oades, J.M., 1982. Organic matter and water stable aggregates. J. Soil Sci. 33, 141-163.
133. Tyagi, S.C., Sharma, D.L., Nathani, G.P., 1982. Effect of different cropping patterns on the physical properties of medium black soils of Rajsthan. Curr. Agric. 6, 172-176.
134. Unger, P.W., 1982. Surface soil physical properties after 36 years of cropping to winter wheat. Soil Sci. Soc. Am. J. 46, 796-801.
135. Unger, P.W., McCalla, T.M., 1980. Conservation tillage systems. Adv. Agron. 33, 1-58.
136. USDA, 1978. Improving soils with organic wastes. Report to Congress in response to Section 1961 of the Food and Agric. Act of 1977 (P.L. 95 113), USDA, Washington, DC.
137. USDA, Office of Planning and Evaluation, 1975. Minimum tillage: A preliminary technology assessment, Washington, DC.
138. Utomo, M., 1986. Role of legume cover crops in no-tillage and conventional tillage corn production. PhD Dist., Univ. of Kentucky, Lexington.
139. Utomo, M., Frye, W.W., Blevins, R.L., 1990. Sustaining soil N for corn using hairy vetch cover crop. Agron. J. 82, 979-983.
140. Wada, A., Higashi, T., 1976. The categories of aluminium and iron-humus complex in Ando soils determined by selective dissolution. J. Soil Sci. 27, 357-368.
141. Woomer, P.L., Martin, A., Albrecht, A., Resck, D.V.S., Scharpenseel, H.W., 1993. The importance and management of soil organic matter in the tropics. In: Woomer, P.L., Swift, M.J. (Eds.), The Biological Management of Tropical Soil Fertility. Wiley, UK, pp. 47-80.