From 1999 to 2023, 44 products or active ingredients were evaluated for Rhizoctonia solani management in greenhouse experiments as soil drench, soil incorporation, foliar or soak application, and in field experiments as soil drenches.
Category: Environmental Horticulture Program
Crop Vignette: Dogwood
Plant Information Cornus florida, also known as flowering dogwood, is a native North American species of deciduous tree in the Cornaceae family. It is popular across its range, from southeastern Canada to northern Mexico, due to its beautiful petal-like bracts and its interesting bark. The hard wood likely inspired its genus name, which comes from [...]
Prodiamine + Isoxaben Crop Safety – 2023
Prodiamine + Isoxaben (Gemini G) is a herbicide combination developed by ICL Specialty Fertilizers for pre-emergent control of grasses and broadleaf weeds on environmental horticulture crops.
Crop Vignette: Eastern Redbud
Plant Information The eastern redbud or American redbud,also known as Cercis canadensis, is a deciduous woody perennial in the Fabaceae family that is native to eastern North America. The genus name comes from the Greek kerkis meaning weaver’s shuttle, which refers to the shape of the seed pod. The Eastern redbud can be identified by [...]
Dimethenamid-p Crop Safety – 2023
From 2007 to 2021, IR-4 completed 594 trials on Tower EC (dimethenamid-p). The data contained in this report was generated to register uses of dimethenamid-p on and around environmental horticulture plants
Crop Vignette: Coneflower
Plant Information Echinacea is a genus of about 10 perennial species, commonly known as coneflowers, in the Asteraceae family. They are native to eastern and central North America where they naturally grow in open woodlands and prairies. The genus name comes from the Greek ekhinos, meaning hedgehog, likely referring to the spiny central disk of [...]
Crop Vignette: Bleeding Heart
Plant Information Bleeding Heart (Dicentra sp.) is a genus in the Papaveraceae family with over 20 species native to North America and eastern Asia. The name Dicentra comes from the Greek words dis and kéntron meaning “twice” and “spur”, referring to the two spurred outer petals that give the flowers their distinctive shape. This distinctive [...]
Liverwort Efficacy – 2023
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.
Pydiflumetofen + Difenconazole Crop Safety – 2023
Postiva (pydiflumetofen + difenoconazole) is a new fungicide registered by Syngenta for the control of foliar diseases of environmental horticulture crops. The IR-4 Project completed 43 crop safety trials
Picarbutrazox Crop Safety – 2023
Picarbutrazox is a novel fungicide with a new mode of action being developed by Nisso America for the control of oomycete diseases such as Bremia, Peronospora, Pseudoperonospora, Phytophthora,