Global Humic Products Ltd. believes that its long-term success depends on providing its customers objective research data that support our product claims, and sound scientific information that increases their understanding of our products’ benefits.  Our evidence-based research is built on over 20 years of industry experience.  It is designed to provide knowledge and insight into the many benefits of humic substances and a practical approach on how to get the best value out of their use.

Here are representative technical and research papers that have been published by our staff on the analytical method of humic substances and the efficacy of commercial humic products for agriculture.

1). Liem, L. E. 2021. Low-Rank Coal Applications in Agriculture: Humic Analyses, Products, and Performance. John Wiley and Sons (US/UK), 336 pages.

2). Liem, L. E., Serben, T., and Cano, M. 2019. Gravimetric Quantification of Hydrophobic Fulvic Acids in Lignite Material using Acetone. Journal of AOAC (Association of Official Analytical Chemists) International, 102(6): 1901-1907. 

3). Verdi, P., Cano, E., Liem, E., and Boissoneault, M. 2017. Reducing Soil Compaction. Acres USA Magazine, 47(November 11): 1 page.

4). Verdi, P., Cano, M., and Liem, L. E. 2015. Low Concentration of Humic Substances Enhanced the Growth of Lactuca sativa L. Journal of Experimental Agriculture International (formerly American Journal of Experimental Agriculture), 5(6): 555-561. 

5). Tho, A. and Liem, E. 2015. Organic Matter Products Increase Yields. Acres USA Magazine, 45(October 10): 1 page. 

6). Liem, E., Verdi, P., Cano, M., and Bates, M. 2014. Amending High Salt Content Soils. Acres USA Magazine, 43(November 11): 2 pages. 

7). Cano, M., Verdi, P., and Liem, E. 2014. Liquified Organic Matter Trials. Acres USA Magazine, 41(March 3): 2 pages. 

Check back here for future updates on our continued research efforts.

Global Humic Products Ltd. is proud to have as one of its founding members Dr. Edwin Liem.  He is a noted researcher and author of numerous technical and research papers on humic substances. Edwin holds MSc and PhD degrees in civil environmental engineering from the University of Alberta and has been involved in the study of humic substances since 2001.

His latest work, Low-Rank Coal Applications in Agriculture: Humic Analyses, Products, and Performance, a textbook published in 2021 by John Wiley & Sons (US/UK), contains original data collected from laboratory and agricultural field trials as well as providing a literature review on the science and regulation behind humics. Edwin has been working with low-rank coal since 2001, including its commercial applications in oil/gas drilling, mining remediation, and agriculture.

Low-Rank Coal Applications in Agriculture: Humic Analyses, Products, and Performance by L. Edwin Liem Published by John Wiley & Sons, 2021 (US/UK).

Low-Rank Coal Applications in Agriculture explores the commercialization and marketing potential of low-rank coal, which is rich in organic matter and humic substances. The author—a noted expert on the topic—clearly shows from a practical perspective, that rather than using it as an energy source, this material can be applied for the agricultural sector.  

The author investigates low-rank coal’s potential as used in dry and liquid humic products. This book discusses both raw materials and commercial products, and provides data on improved soil quality, crop yields, and livestock