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First-of-Its-Kind Hops Terroir Research Study

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  • First-of-Its-Kind Hops Terroir Research Study

    Coleman Agriculture Partners with Oregon State University for First-of-Its-Kind Hops Terroir Research Study
    Press release:

    Initial results reveal that soil influences hop flavor and, ultimately, beer profiles

    GERVAIS, Ore. (August 19, 2019) – Scientists at Oregon State University’s College of Agricultural Sciences (OSU) and Red Hill Soils, along with farmers from Oregon’s largest hop grower, Coleman Agriculture, recently shared the initial findings of a yearlong study into the effects of terroir on the flavor profile of hops, a primary ingredient in beer. For the purpose of the study, terroir is defined as the unique soil composition, climate, and cultural practices that may impact the flavor and aroma of hops. The preliminary findings were presented at the Coleman Hop Terroir event in one of Coleman Agriculture’s hop yards near Independence, Ore., to a select group of industry professionals, including brewers, industry professionals, media, scientists and neighboring farmers.

    Attendees were the first to hear about the approach to the study and the initial results of the partnership, learning that there is a measurable, perceptible difference in the beers brewed from hops grown in different locations and soil types. This work is the first step toward determining exactly how to manage the crop to produce the most desirable hops with specific traits.

    “Growing hops and brewing beer are each an intricate blend of science and art, and we know intuitively that the flavor of hops can vary from field to field, and that some beers have a distinctive taste that could only have been created by hops from a specific yard,” said John Coleman, farmer and partner at Coleman Agriculture. “This study validates what so many of us farmers and brewers have instinctively known—that there are differences, and that they matter. But now we’ve started to learn why those differences exist.”

    The project examined two different varietals of hops, Sterling and Centennial, grown across four different locations in the Willamette Valley and two main types of soil. Scientists analyzed the physical and chemical characteristics of the soil, the climate and weather conditions over the course of the growing season, the crop management techniques employed, and the chemistry of the hops grown there. A sensory panel was conducted to evaluate perceptible differences among the beers brewed with hops from each location studied.“

    The most important thing we learned is that terroir does measurably affect the hops,” said OSU Professor of Fermentation Science Dr. Tom Shellhammer, who led the scientific team’s efforts. “There are differences in soil, climate and hop chemistry, and we can even taste the difference in the beers brewed from these hops. In this study, we found that the differences between Sterling hops from different locations were more muted and nuanced, and in the Centennial hops the differences were clearer and more easily identifiable.”

    Guests at the Coleman Hop Terroir event were offered samples of the study’s beers under a tent located in one of the yards featured in the study. Anecdotal reports from the event affirmed the sensory panel’s conclusion that the beers have distinctively different characteristics.

    “This isn’t the end of the story, it just verifies that there is something there worth investigating,” added Dr. Shellhammer. “The next part of the journey is to dig deeper, both metaphorically and literally, to find out what drives these differences and how we can manipulate them to achieve specific results.”

    Coleman Agriculture and OSU will release the full study results publicly in late 2019 and have announced their intent to launch the second phase of the study in the months ahead.

    “This is only the beginning of an exciting movement for the entire beer industry, with the potential to benefit hop farmers, brokers, brewers and beer enthusiasts worldwide,” said Liz Coleman, Terroir Project Lead. “The work we’ve done here is a great example of all boats rising with the tide. Together, as those of us in the industry continue to learn and share research into terroir’s impact on hops, we will position Oregon as one of the world’s premier sources for high-quality hops and brews. And that’s good for everyone who loves beer.”

    The Coleman Hop Terroir Team is composed of the following people:
    Liz Coleman—Project Lead
    Garrett Weaver—Hop Terroir Program Manager
    John Coleman—Sr. Hop Resource
    Bill Cahill—Hop Management & Soil Resource
    Haley Nelson—Communication & Collaboration Program Manager
    Andy Gallagher—Soil Classifier & Soil Scientist, Red Hills Soils
    Dr. Betsy Verhoeven—OSU Extension Agent, Field Crops
    Dr. Tom Shellhammer—Nor’Wester Endowed Professor of Fermentation Science at OSU
    Dr. Shaun Townsend—OSU Aroma Hop Breeder

    About Coleman Agriculture
    Coleman Agriculture is a sixth-generation family-owned and -operated farm with headquarters just south of the small Western Oregon community of St. Paul. Coleman manages over 8,000 acres of land in the Willamette Valley, cultivating some of the highest-quality crops you’ll find anywhere. They specialize in hops, hazelnuts, seed crops and a variety of vegetables, selling directly to brokers and commercial partners. Coleman Agriculture is one of the most diverse hop growers in Oregon, producing over 2 million pounds, from 24 distinct varieties, every year.
    About the OSU College of Agricultural Sciences
    Through its world-class research on agriculture and food systems, natural resource management, rural economic development and human health, the College provides solutions to Oregon’s most pressing challenges and contributes to a sustainable environment and a prosperous future for Oregonians.
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