Preemergence and Postemergence Control of Artilleryweed (Pilea microphylla) in Container Nurseries and Landscapes

Abstract

These proceedings are a compilation of 14 papers that were presented at the regional meetings of the forest and conservation nursery associations in the United States in 2013. The Joint Northeast and Southern Forest Nursery Conference was held at the Holiday Inn City Centre, Lafayette, Indiana, July 22 to 25, 2013. Subject matter for the technical sections included nursery fertilization, black walnut research, and exploring the threat of hybrid Phytopthoras (and how to prevent this). Field trips included tours of the Purdue Department of Forestry and Natural Resources, the Hardwood Tree Improvement and Regeneration Center plantings, the Martell Forest -Wright Forestry Center, ArborAmerica, and Vallonia Nursery. The meeting of the Western Forest and Conservation Nursery Association was held at the Red Lion Hotel, Olympia, Washington, August 6 to 7, 2013. Subject matter for the sessions was themed around management of soils, growing media, and roots in the production of forest and conservation seedlings. This included tree pathology, Methyl Bromide alternatives, mycofiltration technology, photoperiod manipulation, fertilization, root zone heating, evaluating alternative growing media components and conducting effective research in the nursery. The meeting was hosted by the Washington Department of Natural Resources (DNR). An afternoon field trip included tours of Washington DNR's Meridian Seed Orchard, Lawyer Nursery, and Washington DNR's Webster Nursery. Evening presentations centered around the local area, historic shellfish growing, and tree farms.Key Words-bareroot nursery, container nursery, nursery practices, fertilization, pest management, seeds, reforestation, restoration, tree physiology, hardwood species, native species Papers were edited to a uniform style; however, authors are responsible for content and accuracy.i Pesticide Precautionary StatementThis publication reports research involving pesticides. It does not contain recommendations for their use, nor does it imply that the uses discussed here have been registered. All uses of pesticides must be registered by the appropriate state and/or federal agencies before they can be recommended. CAUTION:Pesticides can injure humans, domestic animals, desirable plants, fish, and wildlife if they are not handled or applied properly. Use all pesticides selectively and carefully. Follow recommended practices for the disposal of surplus pesticides and their containers. The use of trade or firm names in this publication is for reader information and does not imply endorsement of any product or service by any of the organizations represented here.ii iii Acknowledgments:The Funding for this publication was provided as a technology transfer service by the USDA Forest Service, State and Private Forestry through the National Reforestation, Nurseries, and Genetic Resources (RNGR) Program. The compilers thank Jim Marin, Lane Eskew, Nancy Chadwick, and Phillip Cates for their assistance in the preparation, printing, and distribution of this publication. Searcha...

First record of Pilea microphylla (Urticaceae) in Sicily

“…Pilea microphylla, commonly known as artillery weed, rockweed or gunpowder plant, is native to Mexico and tropical South America (Monro 2001). It is mainly utilized in gardens and landscapes as foliage or groundcover ornamental plant (Saha & al. 2017), but also for many ethnobotanical uses (Bhellum & Hamid 2016).…”

Native Weedy Pests of the Deep South

“…Once widely planted as an ornamental groundcover (Blessington and Collins, 1993), artillery weed spreads aggressively in landscape planting beds and in cracks in hardscapes. Saha et al (2017) reported that glyphosate provides only suppression of mature artillery weed, with fresh weight reductions ranging from 30% to 50% in one experiment. Numerous preemergence herbicides provide effective control, and herbicides including flumioxazin and glufosinate provide effective postemergence control (Saha et al, 2017).…”

“…Saha et al (2017) reported that glyphosate provides only suppression of mature artillery weed, with fresh weight reductions ranging from 30% to 50% in one experiment. Numerous preemergence herbicides provide effective control, and herbicides including flumioxazin and glufosinate provide effective postemergence control (Saha et al, 2017). Although many of these herbicides are available to homeowners, they are typically only available for purchase in very large quantities (e.g., 9.5-L bottles or 23-kg bags), which increases the cost considerably for homeowners managing small areas.…”

Annual bluegrass control in bermudagrass using dimethenamid and pendimethalin

“…], large crabgrass [ Digitaria sanguinalis (L.) Scop. ], garden spurge ( Euphorbia hirta L.), and eclipta ( Eclipta prostrata L.) (Saha, Marble, Stewart, & Chandler, 2017; Saha et al., 2019). In turfgrass, FreeHand effectively controlled simazine (6‐chloro‐2‐ N ,4‐ N ‐diethyl‐1,3,5‐triazine‐2,4‐diamine)‐resistant ABG when applied preemergence in a zoysiagrass ( Zoysia spp.)…”