2006 PNW Weed Management Handbook      http://pnwpest.org/pnw/weeds

2006 PNW Insect Management Handbook      http://pnwpest.org/pnw/insects

2006 PNW Plant Disease Management Handbook      http://plant-disease.ippc.orst.edu/

This web site calculates the relative fuel costs for different farming operations
and tillage systems, based on zip code.   http://ecat.sc.egov.usda.gov/

Use this USDA website to see 2004 estimates of cost of wheat production.  In the 2nd box
down you can choose commodity and region.   http://www.ers.usda.gov/Data/CostsAndReturns/testpick.htm