Page 176 - Ilmu Tanah

The Chemistry and Fertility of Soils under Tropical Weeds 163

Dowdy, R.H., J.J. Latterell, T.D. Hinesly, R.B. Groesman, and D.L. Sulivan. 1991. Trace metal
movement in an Aeric Ochraqualf following 14 years of annual sludge applications. J.
Environ. Qual., 20:119-123.
Duxbury, J.M. and R.L. Tate III. 1981. The effect of soil depth and crop cover on enzymatic
activities in pahokee muck. Soil Sci. Soc.Am. J., 45:322-328.
Ekenler, M. and M.A. Tabatabai. 2003. Responses of phosphatases and arylsulfatase in soils
to liming and tillage systems. J. Plant Nutr. Soil Sci., 166: 281–290.
El-Falaky, A.A., S.A. Aboulroos, and W.L. Lindsay. 1991. Measurement of cadmium activities
in slightly acidic to alkaline soils. Soil Sci. Soc. Am. J., 55:974-979.
Ellis, B.G. and B.D. Knezek. 1982. Adsorption reactions of micronutrients in soils. pp. 57-78.
In J.J. Mortvedt, P.M. Giordano, and W.L. Lindsay (Eds.). Micronutrients in Agriculture.
SSSA, Inc., Madison.
Fan, X.H. and Y.C. Li. 2010. Nitrogen release from slow-release fertilizers as affected by soil
type and temperature. Soil Sci. Soc. Am. J., 74:1635-1641.
Fang, S., J. Liu, D. Liu, and B. Xie. 2010. Enzymatic activity and nutrient availability in the
rhizosphere of poplar plantations treated with fresh grass mulch. Soil Sci. Plant Nutr.,
56:483-491.
Farshadirad, A., E. Dordipour, and F. Khormali. 2012. Kinetics of non-exchangeable
potassium release from soil and its components in some soils of Golestan Province. J.
Water Soil Sci., 16:273-285.
Fernandez-Calvino, D., M. Arias-Estevez, M. Diaz-Ravina, and E. Baath. 2012. Assessing the
effects of Cu and pH on microorganisms in highly acidic vineyard soils. Europ. J. Soil
Sci., 63:571-578.
Flegal, A.R. and D.R. Smith. 1995. Measurement of environmental lead contamination and
human exposure. Environ. Contam. Toxicol., 143:1-45.
Frankenberger, W.T., Jr. and J.B. Johanson. 1982. Effect of pH on enzyme stability in soils.
Soil Biol. Biochem., 14:433-437.
Frankenberger, W.T., Jr. and W.A. Dick. 1983. Relationship between enzyme activities and
microbial growth and activity indices in soils. Soil Sci. Soc. Am. J., 47:945-951.
Garbuio, F.J., D.L. Jones, L.R.F. Alleoni, D.V. Murphy, and E.F Caires. 2011. Carbon and
nitrogen dynamics in an Oxisol as affected by liming and crop residues under No-Till.
Soil Sci. Soc. Am. J., 75:1723-1730.
Garcia-Morote, F.A., F.R. Lopez-Serrano, M. Andres, E. Martinez-Garcia, M. Lucas-Borja, T.
Dadi, D. Candel, and C. Wic. 2012. Effects of woodland maturity, vegetation cover and
season on enzymatic and microbial activity in thermophilic Spanish Juniper woodlands
(Jiniperus thurifera L.) of southern Spain. Europ. J. Soil Sci., 63:579-591.
Garrels, R.M. and C.L. Christ. 1965. Solutions, Minerals, and Equilibria. Freeman, Cooper &
Co., San Fransisco.
Ge, Y.Y., Q-L. Wang, L. Wang, W-X. Liu, X-Y. Liu, and Y-J. Huang. 2017. Response of soil
enzymes and microbial communities to root extracts of the alien Alternanthera
philoxeroides. Arch. Agron. Soil Sci. 64:708-717
Geiger, G., H. Brandl, G. Furrer, and R. Schulin. 1998. The effect of copper on the activity of
cellulase and -glucosidase in the presence of montmorillonite or Al-montmorillonite.
Soil Biol. Biochem., 30(12):1537-1544.
Gianfreda, L., M.A. Rao, and A. Violante. 1992. Adsorption, activity, and kinetic properties
of urease on montmorillonite, aluminum hydroxide and Al(OH) x -montmorillonite
complexes. Soil Biol. Biochem., 24(1):51-58.

Abdul Kadir Salam and Nanik Sriyani – 2019