From Wagga Wagga, a farmer's guide to increasing soil organic matter under pastures
The New South Wales Department of Primary Industries has an interesting 60-page guide to growing soil organic matter in pastures.
"This book is based on findings from a three year project investigating soil carbon levels in pastures under different management practices in south east NSW. It is designed to be of practical use to farmers who want to increase their soil carbon levels. It includes basic information on soil carbon and reports the project's findings regarding the impact of pasture management on soil carbon."
It can be downloaded from here: