References:
Madden, N.M., R.J. Southard, and J.P. Mitchell. 2008. Conservation tillage reduced PM10 emissions is forage rotations. Atmospheric Environment 42:3795-3808.
Pearson, C.H, C.A. Holcomb, A.W. Cooley and J.E. Murray. 2002. Guidelines for using conservation tillage under furrow irrigation. Colorado Ag. Expt. Tech. Report TR02-6.
Sharkoff, J.L., J.G. Davis and T.A. Bauder. 2008. Colorado Phosphorus Index Risk Assessment
(Version 4). USDA/NRCS.
Sprague, L. A. and A.I. Greve. 2003. Changes in Nutrient and Pesticide Concentrations in Urban and Agricultural Areas of the South Platte River Basin, Colorado, Wyoming, and Nebraska, 1994–2000, USGS Water-Resources Investigations Report 02-4270, 12 p.
Troeh, F.R., J.A. Hobbs, and R.L. Donahue. 2004. Soil and water conservation for productivity and environmental protection – fourth edition. Prentice Hall. New Jersey.
Wortman, C.S., and P.J. Jasa. 2009. Choosing the right tillage system for row crop production. University of Nebraska-Lincoln Extension Nebguide G1516.
Links:
Conservation Technology Information Center
NRCS Energy Estimator: Tillage
Colorado Conservation Tillage Association