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Category: Weed Science Efficacy

Bittercress Efficacy – 2020

Posted on June 9, 2020August 23, 2021

Nursery growers have had a longstanding battle to control weeds in environmental horticulture crops. Bittercress(Cardimine spp.), is one of the most difficult weeds to control

Posted in Efficacy, Weed Science, Weed Science Efficacy

Spurge Efficacy Summary – 2020

Posted on March 18, 2020August 20, 2021

Nursery growers have had a longstanding battle to control weeds in environmental horticulture crops. Spurge (Chamaesyce maculata), is one of the most difficult weeds to control

Posted in Efficacy, Weed Science, Weed Science Efficacy

Oxalis Efficacy Summary – 2020

Posted on January 31, 2020August 20, 2021

Nursery growers have had a longstanding battle to control weeds in environmental horticulture crops. Oxalis (Oxalis spp.) is one of the most difficult weeds to control in

Posted in Efficacy, Environmental Horticulture Program, Weed Science, Weed Science Efficacy

Early Post Emergence Efficacy Summary – 2011

Posted on October 26, 2017August 20, 2021

From 2008 through 2011, fourteen pre-emergent herbicides were tested across the United States through the IR-4 Ornamental Horticulture Program to determine whether they can control

Posted in Efficacy, Environmental Horticulture Program, Weed Science, Weed Science Efficacy

Liverwort Efficacy Summary – 2012

Posted on October 26, 2017August 20, 2021

Data in this report were generated to evaluate several products for post-emergent control of liverworts (Marchantia sp.). Liverworts are among the most serious weeds of container grown ornamentals.

Posted in Efficacy, Environmental Horticulture Program, Weed Science, Weed Science Efficacy

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This website is based upon work that is supported by the National Institute of Food and Agriculture, U.S. Department of Agriculture, under award numbers 2021-34383-34848 and 2020-34383-32455 with substantial cooperation and support from the State Agricultural Experiment Stations, USDA-ARS, USDA-APHIS, and USDA-FAS. In accordance with Federal Law and U.S. Department of Agriculture policy, this institution is prohibited from discriminating on the basis of race, color, national origin, sex, age or disability.

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  • About IR-4
    ▼
    • Annual Reports
    • Careers
    • Contacts
      ▼
      • Headquarters Staff
      • National Directory
      • Regions & USDA-ARS
    • History
    • Mission & Vision
    • News
    • Outreach
    • Participants in the Process
  • Food Crops
    ▼
    • Biopesticide Regulatory Support Program
    • Crop Grouping
    • Integrated Solutions
    • International Programs
    • Residue and Product Performance
  • Environmental Horticulture
  • Events & Training
  • Stakeholder Resources
    ▼
    • Database: Food Crops
    • eQA/eDOCs
    • Database: Environmental Horticulture
    • Databases: Biopesticides and Organic Support
    • Glossary of Acronyms
    • Upload Files
  • Submit a Request