Field Crops
Agronomy Research and Information Center, UC Davis
Cost Studies for various crops
UC ANR Publications Catalogue – Online (fully searchable, many free publications, many priced publications can be fully previewed)
Small Grains
Integrated Pest Management for Small Grains, UCANR #3333, 1990, $22 (full online preview available)
Oat Cultivars of California, Lee Jackson, 2007
Pest Management Guidelines – Small Grains
Small Grain Production Manual, UC ANR #8208, 2006, FREE (9.6 MB) (you can download each chapter separately or as a whole manual)
Wheat Cultivars of California, Lee Jackson, 2007
Alfalfa
Cost Studies (search on alfalfa)
Irrigated Alfalfa Management Manual, UC ANR #3512, 2008, $65, or download individual chapters for FREE
Methods to Enable Coexistence of Diverse Production Systems Involving Genetically Engineered Alfalfa, UC ANR #8193, 2006, FREE
Overseeding and Companion Cropping in Alfalfa, UC ANR #21594, 2000, $10 (full online preview)
Pest Management:
Integrated Pest Management for Alfalfa, UC ANR #21594, 2000, $10 (full online preview)
Pest Management Guidelines - Alfalfa
Roundup Ready Alfalfa: An Emerging Technology, UC ANR #8153, 2004, FREE