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4E.A. Stockdale , N.H. Lampkin , M. Hovi , R. Keating , E.K.M. Lennartsson , D.W. Macdonald , S. Padel , F.H. Tattersall , M.S. Wolfe , and C.A. Watson 2001. Agronomic and environmental implications of organic farming systems. Advances in Agronomy 70:261–327.
5M.A. Liebig and J.W. Doran 1999. Impact of organic production practices on soil quality indicators. Journal of Environmental Quality 28:1601–1609.
6M.A. Altieri 2002. Agroecology: the science of natural resource management for poor farmers in marginal environments. Agriculture, Ecosystems and Environment 93:1–24.
7S.S. Andrews , D.L. Karlen , and C.A. Cambardella 2004. The soil management assessment framework: a quantitative soil quality evaluation method. Soil Science Society of America Journal 68:1945–1962.
8J.W. Doran and M.R. Zeiss 2000. Soil health and sustainability: managing the biotic component of soil quality. Applied Soil Ecology 15:3–11.
9A.H.C. van Bruggen and A.M. Semenov 2000. In search of biological indicators for soil health and disease suppression. Applied Soil Ecology 15:13–24.
10D.L. Karlen , M.J. Mausbach , J.W. Doran , R.G. Cline , R.F. Harris , and G.E. Schuman 1997. Soil quality: a concept, definition, and framework for evaluation. Soil Science Society of America Journal 61:4–10.
11D.E. Stott , S.S. Andrews , M.A. Liebig , B.J. Wienhold , and D.L. Karlen 2010. Evaluation of β-glucosidase activity as a soil quality indicator for the soil management assessment framework. Soil Science Society of America Journal 74:107–119.
14L.E. Drinkwater , D.K. Letourneau , F. Worken , A.H.C. van Bruggen , and C. Shennan 1995. Fundamental differences between conventional and organic tomato agroecosystems in California. Ecological Applications 5:1098–1112.
16S. Melero , E. Madejon , J.F. Herencia , and J.C. Ruiz 2008. Effect of implementing organic farming on chemical and biochemical properties of an irrigated loam soil. Agronomy Journal 100:136–144.
17M.M. Wander , D.S. Hedrick , D. Kaufman , S.J. Traina , B.R. Stinner , S.R. Kehrmeyer , and D.C. White 1995. The functional significance of the microbial biomass in organic and conventionally managed soils. Plant and Soil 170:87–97.
18P. Mäder , A. Fließbach , D. Dubois , L. Gunst , P. Fried , and U. Niggli 2002. Soil fertility and biodiversity in organic farming. Science 296:1694–1697.
19M.A. Arshad and S. Martin 2002. Identifying critical limits for soil quality indicators in agro-ecosystems. Agriculture, Ecosystems and Environment 88:153–160.
20V. Acosta-Martinez , T.M. Zobeck , T.E. Gill , and A.C. Kennedy 2003. Enzyme activities and microbial community structure in semiarid agricultural soils. Biology and Fertility of Soils 38:216–227.
21K. Pritchett , A.C. Kennedy , and C.G. Cogger 2011. Management effects on soil quality in organic vegetable systems in western Washington. Soil Science Society of America Journal 75:605–615.
30J.A. Parham and S.P. Deng 2000. Detection, quantification and characterization of glucosaminidase activity in soil. Soil Biology and Biochemistry 32:1183–1190.
32V.S. Green , D.E. Stott , and M. Diack 2006. Assay for fluorescent diacetate hydrolytic activity: optimization for soil samples. Soil Biology and Biochemistry 38:693–701.
34V. Acosta-Martinez , T.M. Zobeck , and V.G. Allen 2010. Soil microbial communities and function in alternative systems to continuous cotton. Soil Science Society of America Journal 74:1181–1192.
38M.J. Acea and T. Carballa 1996. Microbial response to organic amendments in a forest soil. Bioresource Technology 57:193–199.
39J.R. Teasdale , C.B. Coffman , and R.W. Mangum 2007. Potential long-term benefits of no-tillage and organic cropping systems for grain production and soil improvement. Agronomy Journal 99:1297–1305.
40R.J. Kremer and J. Li 2003. Developing weed-suppressive soils through improved soil quality management. Soil & Tillage Research 72:193–202.
42R.P. Dick 1992. A review: long-term effects of agricultural systems on soil biochemical and microbial parameters. Agriculture, Ecosystems and Environment 40:25–36.
44A.K. Bandick and R.P. Dick 1999. Field management effects on soil enzyme activities. Soil Biology & Biochemistry 31:1471–1479.
45J.R. Reeve , C.W. Schadt , L. Carpenter-Boggs , K. Sanghoon , J. Zhou , and J.P. Reganold 2010. Effects of soil type and farm management on soil ecological functional genes and microbial activities. ISME Journal 4:1099–1107.
46V. Acosta-Martinez , L. Cruz , D. Sotomayor-Ramirez , and L. Perez-Alegria 2007. Enzyme activities as affected by soil properties and land use in a tropical watershed. Applied Soil Eology 35:35–45.
47M. Ekenler and M.A. Tabatabai 2003. Tillage and residue management effects on β-glucosaminidase activity in soils. Soil Biology and Biochemistry 35:871–874.
48R.P. Udawatta , R.J. Kremer , H.E. Garrett , and S.H. Anderson 2009. Soil enzyme activities and physical properties in a watershed managed under agroforestry and row-crop systems. Agriculture, Ecosystems and Environment 131:98–104.
49M.F. Fernandesa , A.C. Barretoa , I.C. Mendesb , and R.P. Dick 2011. Short-term response of physical and chemical aspects of soil quality of a kaolinitic Kandiudalfs to agricultural practices and its association with microbiological variables. Agriculture, Ecosystems and Environment 142:419–427.
50D. Jordan , R.J. Kremer , W.A. Bergfield , K.Y. Kim , and V.N. Cacnio 1995. Evaluation of microbial methods as potential indicators of soil quality in historical agricultural fields. Biology and Fertility of Soils 19:297–302.
51J.P. Reganold , P.K. Andrews , J.R. Reeve , L. Carpenter-Boggs , C.W. Schadt , J.R. Alldredge , C.F. Ross , N.M. Davies , and J. Zhou 2011. Fruit and soil quality of organic and conventional strawberry agroecosystems. PLoS ONE 5(9):e12346. doi:10.1371/journal.pone.0012346.