Liverworts (Marchantia sp.) are difficult to manage during the production of perennial environmental horticulture crops grown in containers. Liverworts are among the most serious weeds of container grown ornamentals.
Category: Efficacy
Powdery Mildew Efficacy Summary – 2023
Powdery mildew is a highly recognizable disease with pronounced colonies of white on foliage and, for some species, on petals. Due to the high number of spored produced, powdery mildews often develop resistance quickly to fungicides.
Scale Efficacy – 2023
Managing scale insects presents unique challenges. Products with contact modes of action must be applied at specific timings in order to reach the most susceptible crawler stages. Products with
Abamectin Crop Safety Summary – 2023
Abamectin has been registered since 1987 for environmental horticulture crops, initially for leafminers and spider mites on annuals and herbaceous perennials. Then in 2000, woody ornamentals plus aphids,
Botrytis Efficacy Summary – 2023
At the IR-4 Environmental Horticulture Program Workshop in 2011, Botrytis Efficacy was selected as a high priority project to expand the knowledge and list of fungicides available to growers for these diseases.
Mealybug Efficacy – 2023
Managing mealybugs and scale insects presents unique challenges. Products with contact modes of action must be applied at specific timings in order to reach the most susceptible crawler stages
Beetle, Borer, Weevil & White Grub Efficacy – 2023
Collectively, managing coleopteran insects can be challenging because the adult and larval stages may both cause damage and sometimes occur on different hosts or on different plant parts.
Pythium Efficacy Summary – 2022
At the IR-4 Environmental Horticulture Program Workshops in 2009 and 2019, Pythium Efficacy was selected as a high priority project to expand the knowledge and list of fungicides available to growers for these diseases.
Beetle, Borer, Weevil & White Grub Efficacy – 2022
Collectively, managing coleopteran insects can be challenging because the adult and larval stages may both cause damage and sometimes occur on different hosts or on different plant parts.
Thrips Efficacy – 2022
For the last 16 years, the IR-4 Environmental Horticulture Workshop has ranked developing efficacy data on new products to manage thrips as a High Priority Project either nationally or regionally.