Dr. Robert Miller serves as the ALP Program Technical Director. Dr. Miller has wide-ranging expertise in agricultural laboratory analyses, coordinating multiple interlaboratory proficiency programs and laboratory QA/QC.
Dr. Miller received his BS and MS degrees from the University of Nebraska. He went on to manage a plant nutrition laboratory at Texas A&M University before earning his Ph.D. degrees at Montana State University in Soil Fertility and Soil Chemistry. He served as the Director of the Division of Agriculture and Natural Resources Diagnostic Laboratory at the University of California Davis and as Extension Soil Specialist from 1988 to 1997. While director, in 1992, he co-founded the Western States Proficiency Testing Program, a pioneering agricultural interlaboratory program in the western United States.
In 1997 Dr. Miller joined the faculty of Colorado State University as an affiliate Professor in Soils and Crop Sciences, where he was a leader in the development of the North American Proficiency Testing program, which superseded the Western States Program. He worked closely with state agencies, which certified Ag analysis laboratories. In 1997 he founded interlaboratory proficiency programs for geo-technical materials for the United States Golf Association and the Compost Analysis Proficiency Program (CAP) for the United States Compost Council; he continues to coordinate both programs. In 2002 he co-authored a US-EPA grant with the Minnesota Dept. of Agriculture (MDA) to support the Manure Analysis Proficiency (MAP) Program, which today he coordinates with MDA.
Dr. Miller conducts educational lab workshops, provides consulting services and continues to conduct research into agricultural analysis. He has authored over twenty five papers in the agricultural analysis and authored chapters in: Soil, Plant and Water Reference Methods for the Western Region, (1996 and subsequent editions); contributed multiple chapters in Test Methods for the Examination of Composting and Compost and Soil Test Methods from the Southeastern United States. He has served as president of the Soil and Plant Analysis Council and Council Secretary, serves as Chair of the USGA Putting Green Advisory committee and is internationally recognized for his expertise.
With more than three decades coordinating soil analysis proficiency programs and related PT programs, Dr. Miller has developed extensive knowledge of statistical analysis, method performance, and laboratory quality.
CTS encourages all ALP participating labs to contact Dr. Miller with analysis and proficiency questions at robert.miller@cts-interlab.com.
Enroll at any time during the year. A subscription includes three cycles, which are outlined below. Note that data due dates occur approximately 6 weeks after a shipment date and that results must be submitted on or before a data due date in order to be included in the report. Participants can track shipments, submit data and access reports through the CTS Customer Portal.
*While CTS will make every effort to adhere to the published program schedules, all dates provided are tentative and are subject to change.
Samples Ship | Data Due | Report Issued |
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March | April | May |
June | August | September |
September | October | November |
Samples Ship | Data Due | Report Issued |
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June | August | September |
September | October | November |
March | April | May |
Samples Ship | Data Due | Report Issued |
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September | October | November |
March | April | May |
June | August | September |
Our extensive list of properties for soil, botanicals and water analyses is presented below.
Summer 2024
ALP Summary Report No. 54
Spring 2024
ALP Summary Report No. 53
Fall 2023
ALP Summary Report No. 52
Summer 2023
ALP Summary Report No. 51
Spring 2023
ALP Summary Report No. 50
Fall 2022
ALP Summary Report No. 49
Summer 2022
ALP Summary Report No. 48
Spring 2022
ALP Summary Report No. 47
Fall 2021
ALP Summary Report No. 46
Summer 2021
ALP Summary Report No. 45
Spring 2021
ALP Summary Report No. 44
Fall 2020
ALP Summary Report No. 43
Summer 2020
ALP Summary Report No. 42
Spring 2020
ALP Summary Report No. 41
Fall 2019
ALP Summary Report No. 40
Summer 2019
ALP Summary Report No. 39
Spring 2019
ALP Summary Report No. 38
Fall 2018
ALP Summary Report No. 37
Summer 2018
ALP Summary Report No. 36
Spring 2018
ALP Summary Report No. 35
Fall 2017
ALP Summary Report No. 34
Summer 2017
ALP Summary Report No. 33
Spring 2017
ALP Summary Report No. 32
Fall 2016
ALP Summary Report No. 31
Summer 2016
ALP Summary Report No. 30
Spring 2016
ALP Summary Report No. 29
Fall 2015
ALP Summary Report No. 28
Summer 2015
ALP Summary Report No. 27
Spring 2015
ALP Summary Report No. 26
Fall 2014
ALP Summary Report No. 25
Summer 2014
ALP Summary Report No. 24
Spring 2014
ALP Summary Report No. 23
Participants in CTS ALP Program tests can access Test Instructions on the CTS Customer Portal.