TOPSOIL AS A VALUABLE SOURCE - Agricultural Research Updates - page 72

nitrification and denitrification. Global Biogeochemical Cycles 10:401-
412.
Post, W.M., Izarurralde, R.C., Jastrow, J.D., McCarl, B.A., Amonette, J.E.,
Bailey, V.L., Jardien, P.M., West, T.O., Zhou, J., 2004. Enhancement of
carbon sequestration in U.S. Soils. BioScience. 54:895-908.
Puget, P., Lal, R. 2005. Soil organic carbon and nitrogen in a Mollisol in
central Ohio as affected by tillage and land use . Soil and Tillage Research
80:201-213.
Ramos, C., Molbak, L., Molin, S. 2000. Bacterial activity in the rhizosphere
analysed at the single-cell level by monitoring ribosome contents and
synthesis rates. Applied and Environonmental Microbiology 66:801-809.
Riley, H., Pommeresche, R., Eltun, R., Hansen, S., Korsaeth, A. 2008. Soil
structure, organic matter and earthworm activity in a comparison of
cropping systems with contrasting tillage, rotations, fertilizer levels and
manure use. Agriculture, Ecosystems and Environment 124: 275-284.
Robertson, G., Paul, E., Harwood, R. 2000. Greenhouse gases in intensive
agriculture: contributions of individual gases to the radiative forcing of
the atmosphere. Science 289:1922-1925.
Ryan, M., Graham J. 2002. Is there a role for arbuscular mycorrhiza in
production agriculture? Plant and Soil 244:263-271.
Ryan, M.H., Derrick, J.W., Dann, P.R., 2004. Grain mineral concentrations
and yield of wheat grown under organic and conventional management .
Journal of Science of Food and Agriculture 84:207-216.
Samarbakhsh, S., Rejali, F., Ardekani, M., Pak Nejad F., Miransari, M. 2009.
The combined effects of fungicides and arbuscular mycorrhiza on corn
(Zea mays L.) growth and yield under field conditions . Journal of
Biological Sciences, 9:372-376.
Schreiner, R.P., Bethlenfalvay, G.J., 1997. Mycorrhizae, biocides, and
biocontrol. 3. Effects of three different fungicides on developmental stages
of three AM fungi . Biology and Fertility of Soils 24:18-26.
Sharma, S., Aneja, M.K., Mayer, J., Munch, J.C., Schloter, M. 2005.
Characterization of bacterial community structure in rhizosphere soil of
grain legumes . Microbial Ecology 49:407-415.
Six, J., Ogle, S., Breidt, F., Conant, R., Moiser, A., Paustian, K. 2004. The
potential to mitigate global warming with no-tillage management is only
realized when practised in the long term. Global Change Biology 10:155-
160.
Smith, S., Read, D. 2008. Mycorrhizal Symbiosis . Third Edition. Academic
Press. 787p.