Compost Analyses
The Dairy Compost Utilization Project helped the dairy compost producers become members in the Seal of Testing Assurance (STA) Program. Compost facilities in the STA Program must follow a regular testing schedule and utilize laboratories in the STA Program for compost analysis.
Texas Cooperative Extension and Texas Water Resources Institute also worked with the dairy compost facilities to ensure the facilities produced a high quality consistent composted product.
To analyze the material, dairy compost samples were submitted to the Soil, Water and Forage Testing Laboratory at Texas A&M University (Non-STA Laboratory) and to Soil Control Laboratory in Watsonville, CA (STA Laboratory) throughout the project. Laboratory analysis is provided below. The samples analyzed by the Soil, Water and Forage Testing Laboratory were collected in 2003. The samples analyzed by the Soil Control Laboratory were collected in 2005.
Dairy manure compost analysis - Non-STA Laboratory (2003)
Dairy manure compost analysis - STA Laboratory (2005)