Plant Information Impatiens is a genus of more than 1,000 flowering plants in the family Balsaminaceae widely distributed throughout the Northern Hemisphere and the tropics. Most Impatiens species occur in the tropical and subtropical mountain forests in Africa, Madagascar, the Himalayas, the Western Ghats (southwest India), and Southeast Asia. Two species (I. turrialbana and I. […]
Category: Environmental Horticulture Program
Indaziflam Crop Safety – 2021
From 2011 through 2020, IR-4 has completed 159 trials evaluating two granular and one liquid formulations of indaziflam for crop safety. The data contained in this report was generated to
Isoxaben + Dithiopyr Crop Safety – 2021
Fortress (isoxaben + dithiopyr) was registered in 2018 for environmental horticulture crop uses. Between 2018 and 2020, IR-4 examined 17 crop species / genera to expand this label to
Crop Vignette: Holly
Plant Information Ilex or holly is a genus of about 480 species of flowering plants in the family Aquifoliaceae, and the only living genus in that family. The species are evergreen or deciduous trees, shrubs, and climbers from the tropics to temperate zones worldwide. The common ancestor of most of the extant species probably appeared […]
IR-4 Project Facilitating Two Studies to Track and Mitigate Invasive Pests
Two multi-institutional research studies will soon be underway to analyze the movement and mitigation of invasive pests negatively impacting plants in North America.
Botrytis Efficacy Summary – 2021
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.
SOAR Award: Nomination Deadline Extended to April 19
The IR-4 Project is now accepting nominations for the 2021 SOAR Award. This award honors external partners who exemplify the areas of Service, Outreach, Altruism and Research, while supporting specialty crop growers and the mission of the IR-4 Project. If you know someone who demonstrates excellence in these areas, we encourage you to nominate them for this award. Nominees […]
Crop Vignette: Flowering Cherry
Plant Information Ornamental flowering cherries belong to the genus Prunus in the rose family Rosacea, consisting primarily of species native to Asia. The majority of the flowering species are native to Japan and Korea, where centuries of propagation and cultivation have led to the selection of hundreds of genotypes. The most well-known ornamental cherry is […]
2020 Annual Report Now Available
The 2020 IR-4 Project Annual Report is now available. The year 2020 was like no other year in the history of the IR-4 Project. Despite a world-wide pandemic changing day-to-day aspects of how we work, funding uncertainty, and the transition of IR-4 headquarters from Rutgers University to North Carolina State University, our dedicated team of [...]
Crop Vignette: Ferns
Plant Information Ferns first appear in the fossil record about 360 million years ago in the middle Devonian period, but many of the current families and species did not appear until roughly 145 million years ago in the early Cretaceous, after flowering plants came to dominate many environments. Along with club mosses, spikemosses, horsetails, and […]