Hay

Buying and Selling Hay

Hay Quality

How to Judge Hay Quality Visually - Delaware Cooperative Extension
Hay Sampling and Grading - guidelines for sampling and interpreting chemical analysis of hay - Delaware Cooperative Extension
Hay Judging - Oklahoma State University (PDF)
Evaluating Hay Quality - University of Maryland
Blister beetles - Colorado State University
Forage testing labs

Hay Market

Colorado Hay Report - Provides weekly updates on hay prices and market conditions.  Expect to pay slightly higher prices if you are buying small quantities of hay.

Colorado Hay Directory - a listing of hay producers published by the Colorado Dept. of Agriculture

Colorado Weed Free Forage - a listing of certified weed free forage producers published by the Colorado Dept. of Agriculture

Buying and selling hay - an internet hay exchange

Hay Production

Alfalfa

Alfalfa Production Handbook - Kansas State University - a highly recommended comprehensive guide (34 pages, PDF)
Alfalfa: Production and Management - Colorado State University
Alfalfa: Weeds, Diseases and Insects - Colorado State University
Fertilizing Alfalfa and Grasses - Colorado State University
Aphids in Alfalfa - Colorado State University
Alfalfa Weevil - Colorado State University

Grass

How cutting date relates to grass hay quality in northeastern Nevada - University of Nevada
Will Ripping Or Aerating Improve Pasture Or Meadow Productivity?

Hay Preservation

Hay preservatives and drying agents are designed to reduce molding and fermentation.  
Preservatives inhibit fungal and bacterial growth in high moisture hay.  Biological inoculants are the most widely used preservatives in Colorado.
Drying agents quicken the drying process in the field before hay is baled. While drying agents have been found useful in some alfalfa production systems, they have not been effective for grass hay. Hay crushers or crimpers can also reduce drying time. Drying agents are not widely used in Colorado.

Hay Preservation Systems - - Colorado State University
Hay Preservatives - Ohio State University
Making and Storing Quality Hay - University of Missouri
Chemical Drying Agents In Harvesting Legume Hay - Ohio State University
Hay Harvesting, Handling and Storage - Oklahoma State University

Small Grains for Hay

Small Grains for Silage or Hay - University of Nebraska Extension