Here you will find curated research articles about sustainable hop growing. This site aims to provide growers, researchers, and industry partners with vetted information to help them make sustainable choices in their hop farming practices.
Research on this site has been carefully selected by Hop Growers of America (HGA), a trade association that supports and promotes hop growers throughout the United States. You can learn more about HGA on their website, usahops.org.
Please note: Only HGA members may view the articles on this site. Not a member? Please click the Register button below. If you are a member and cannot remember your login credentials, please click the Forgot Password button below.
Economic Sustainability
Published August, 2012
According to USDA report/data (USDA/NASS) U.S. hop prices have changed dramatically in the last 2 decades. For example, prices increased by 35% (20% in real terms) from 2007-2008 and decreased by 11% (20% in real terms) from 2009-2010.
Environmental SustainabilityPublished 2016
Hop petioles were excluded from this study because they were too inconsistent as compared to leaves plus petioles collected at 5 ½ feet above ground and leaves plus petioles collected 1 foot below the wire.
Not a member?
Environmental SustainabilityPublished 2015
Results of 28 field trials conducted over a 12-year period investigating management of hop powdery mildew caused by Podosphaera macularis were quantitatively summarized by meta-analysis to compare product efficacy and use patterns by mode of action as defined by Fungicide Resistance Action Committee (FRAC) groups. Availability of original observations enabled individual participant data meta-analysis. Differences in control of powdery mildew on leaves and cones were apparent among fungicide FRAC groups when individual products were evaluated over the course of a growing season. FRAC groups 13, 3, and U13 provided the most efficacious control of powdery mildew on leaves. Percent disease control on cones was influenced by midseason foliar disease and fungicide mode-of-action. FRAC 13 provided significantly better disease control on cones than all other groups except U13, 3, and premixes of 7 with 11.
Not a member?
Categories: Pests
Environmental SustainabilityPublished March, 2016
Podosphaera macularis, the casual agent of hop powdery mildew, is a recurrent threat to hops in the Pacific Northwest because of the potential to reduce cone yield and quality. Early-season pruning is a common practice in hop production for horticulture reasons. Studies were conducted over a 3-year period in a commercial hop yard to quantify the effect of pruning method and timing on disease development, yield, and cone quality factors. A 4-week delay in pruning reduced the incidence of leaves with powdery mildew from 46% to 10% and cones from 9 to 1%, with the specific effect being season dependent.
Not a member?
Categories: Pests
