Page 175 - Ilmu Tanah

162 The Chemistry and Fertility of Soils under Tropical Weeds

Bridges, D.C. 1999. General overview of weeds in crop systems. pp.547-567. In J. R.
Ruberson (Ed.). Handbook of Pest Management. Marcel Dekker, Inc., New York.
Broadbent, F.E., T. Nakashima, and G.Y. Chang. 1985. Performance of some urease
inhibitors in field trials with corn. Soil Sci. Soc. Am. J., 49:348-351.
Brummer, G., K.G. Tiller, U. Herms, and P.M. Clayton. 1983. Adsorption-desorption and/or
precipitation-dissolution processes of Zn in soils. Geoderma, 31:337-354.
Brzostek, E.R., A. Greco, J.E. Drake, and A.C. Finzi. 2013. Root carbon inputs to the
rhizosphere stimulate extracellular enzyme activity and increase nitrogen availability in
temperate forest soils. Biogeochem., 115:65-76
Cabrera, C., E. Ortega, C. Gallego, M.L. Lorenzo, C. Asesnsio, and M.C. Lopez. 1994. Lead
concentration in farmlands in Southern Spain: Influence of the use of sewage sludge as
fertilizer. Bull. Environ. Contam. Toxicol., 53:32-38.
Cabugao, K.G., C.M. Timm, A.A. Carrell, J. Childs, T-Y.S. Lu, D.A. Pelletier, D.J. Weston, and
R.J. Norby. 2017. Root and rhizosphere bacterial phosphatase activity varies with tree
species and soil phosphorus availability in Puerto Rico tropical forest. Front. Plant Sci.,
https://doi.org/10.3389/fpls.2017.01834.
Cai, G.X., J.R. Freney, W.A. Muirhead, J.R. Simpson, D.L. Chen, and A.C.F. Trevitt. 1989. The
evaluation of urease inhibitors to improve the efficiency of urea as a N-source for
flooded rice. Soil Biol. Biochem., 21(1):137-145.
Cakmak, D., E. Saljnikov, V. Mrvic, M. Jakovljevic, Z. Marjanovic, B. Sikiric, and S. Maksimovic.
2010. Soil properties and trace element contents following 40 years of phosphate
fertilization. J. Environ. Qual., 39:541-547.
Calvaruso, C., M.-P. Turpault, E. Leclerc, J. Ranger, J. Garbaye, S. Uroz, and P. Frey-Klett.
2010. Influence of forest trees on the distribution of mineral weathering-associated
bacterial communities of the Scleroderma citrinum Mycorrhizosphere. Applied Environ.
Microbiol. 76, 4780-4787.
2+
2+
Cavallaro, N. and M.B. McBride. 1980. Activities of Cu and Cd in soil solutions as affected
by pH. Soil Sci. Soc. Am. J., 44:729-732.
Chan, K.Y. 1997. Consequences of changes in particulate organic carbon in Vertisols under
pasture and cropping. Soil Sci. Soc. Am. J., 61:1376-1382.
Chekai, R.T., L.L. Hendrickson, R.B. Corey, and P.A. Helmke. 1987a. A method for controlling
the activities of free metal, hydrogen, and phosphate ions in hydroponic solutions using
ion exchange and chelating resins. Plant Soil, 99:321-334.
Chekai, R.T., R.B. Corey, and P.A. Helmke. 1987b. Effect of ionic and complexed metal
concentrations on plant uptake of cadmium and micronutrient metals from solution.
Plant Soil, 99:335-345.
Corey, R.B. 1964. Soil Analysis. College of Agriculture and Life Sciences, University of
Wisconsin, Madison.
CropLife Asia. 2007. CropLife Asia Annual Report. 26 p.
Davies, B.E. 1990. Lead. pp. 177-196. In B.J. Alloway (Ed.). Heavy Metals in Soils. John
Wiley and Sons, Inc., New York.
Deng, S.P. and M.A. Tabatabai. 1996. Effect of tillage and residue management on enzyme
activities in soils: 1. Amidohydrolases. Biol. Fert. Soils, 22:202-207.
Dharmakeerti, R.S. and M.W. Thenabadu. 1996. Urease activity in soils: a review. J. Natn.
Sci. Coun., 24(3):159-195.

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