Proceedings of the Sixty-first Annual Meeting of the Northeastern ...
Proceedings of the Sixty-first Annual Meeting of the Northeastern ... Proceedings of the Sixty-first Annual Meeting of the Northeastern ...
36 INVASIVE AQUATIC WEEDS IN NORTH CAROLINA. R.J. Richardson, A.P. Gardner, S.T. Hoyle, and A.M. West, North Carolina State Univ., Raleigh, NC. ABSTRACT Several invasive aquatic weeds have become established in North Carolina. Notable species include hydrilla (Hydrilla verticillata (L.f.) Royle), Brazilian elodea (Egeria densa Planch.), Eurasian watermilfoil (Myriophyllum spicatum L.), brittle naiad (Najas minor All.), parrot feather (Myriophyllum aquaticum (Vell.) Verdc.), water hyacinth (Eichhornia crassipes (Mart.) Solms), water lettuce (Pistia stratiotes L.), giant salvinia (Salvinia molesta Mitchell), alligatorweed (Alternanthera philoxeroides (Mart.) Griseb.), and creeping water primrose ([Ludwigia grandiflora (M. Micheli) Greuter & Burdet). Hydrilla may be found in most piedmont counties, but is sporadic in tidewater and mountain counties. Approximately 4,000 acres of Hydrilla can be found in Lake Gaston alone. Brazilian elodea is distributed intermittently throughout the entire state. Eurasian watermilfoil can be found in Lake Gaston (VA and NC) and down the Roanoke River and adjacent counties to the Albemarle Sound. Brittle naiad is infrequently distributed among at least 13 counties. Parrot feather is widely distributed throughout much of the state. Water hyacinth is currently in 10 counties, mainly in southeastern North Carolina. Giant salvinia and water lettuce are limited to the Wilmington area and current infestations of both weeds are not believed to be more than 10 acres. Alligatorweed is widely distributed throughout eastern North Carolina and may be found sporadically in the piedmont. 18
37 WEED PROPAGATION TECHNIQUES FOR USE IN DISCOVERING NEW HERBICIDES FOR TURF. M.S. Casini, L.F. Houck, G.R. Armel, and P.L. Rardon, DuPont Crop Protection, Newark, DE. ABSTRACT Plant propagation techniques were investigated at the DuPont Stine-Haskell Research Center in Newark, DE over the past several years to establish a means for optimizing targeted plant species growth for herbicide screening on key turfgrass weed species. Highly reproducible propagation techniques for difficult to grow species have been integrated into our screening methods in an effort to enhance the quality of data generated via whole plant testing. Such methods aid in the elimination of plant growth variability, making it easier for the evaluating biologist to discern true differences in plant responses. Propagation techniques employed include seed soaks, chemical scarification and vegetative reproduction. Target species investigated included: wild violet (Viola papilionacea Pursh p.p.), wild garlic (Allium vineale L.), buckhorn plantain (Plantago lanceolata L.), ivyleaf speedwell (Veronica hederifolia L.), dollarweed (Hydrocotyle umbellata L.), torpedo grass (Panicum repens L.) and green kyllinga (Kyllinga brevifolia Rottb). 19
- Page 1 and 2: 1 Proceedings of the Sixty-first An
- Page 3 and 4: 3 NORTHEASTERN WEED SCIENCE SOCIETY
- Page 5 and 6: 5 SECTION CHAIRS Agronomy Chair: J.
- Page 7 and 8: 7 CARFENTRAZONE AND QUINCLORAC FOR
- Page 9 and 10: 9 THE EFFICACY AND CROP TOLERANCE O
- Page 11 and 12: 11 EVALUATION OF HERBICIDES FOR CON
- Page 13 and 14: 13 BEING HEARD BY THE IR-4 PROJECT.
- Page 15 and 16: 15 ABSTRACTS FROM THE 7 TH CONFEREN
- Page 17: 17 HERBICIDE NAMES: COMMON, TRADE,
- Page 20 and 21: 20 INTEGRATING WEED CONTROL STRATEG
- Page 22 and 23: 22 GIANT HOGWEED ERADICATION IN PEN
- Page 24 and 25: 24 EFFECTS OF EMERGENCE PERIODICITY
- Page 26 and 27: 26 PRODUCER AND PRODUCTION IMPACTS
- Page 28 and 29: 28 A SIMPLE METHOD FOR CLEANING TUF
- Page 30 and 31: 30 EMERGENCE AND PERFORMANCE OF TWO
- Page 32 and 33: 32 CARFENTRAZONE AND QUINCLORAC FOR
- Page 34 and 35: 34 2006 NEWSS SUMMER WEED CONTEST R
- Page 38 and 39: 38 AMMONIUM PELARGONATE AS A BIOHER
- Page 40 and 41: 40 TRINEXAPAC-ETHYL INFLUENCES EFFI
- Page 42 and 43: 42 Table 1. Insect feeding damage,
- Page 44 and 45: 44 WEED CONTROL WITH TOPRAMEZONE PR
- Page 46 and 47: 46 ROTARY HOE EFFICACY IN CORN: INF
- Page 48 and 49: 48 ALFALFA/GRASS FORAGE MIXTURES US
- Page 50 and 51: 50 CONTROL OF NEW WEED SPECIES IN T
- Page 52 and 53: 52 Table 1. Results of 2006 contain
- Page 54 and 55: 54 TOLERANCES OF ORNAMENTAL SHRUBS
- Page 56 and 57: 56 2006 WEED MANAGEMENT TRIALS IN C
- Page 58 and 59: 58 THE RESPONSE OF FIELD AND CONTAI
- Page 60 and 61: 60 THE EFFICACY AND CROP TOLERANCE
- Page 62 and 63: 62 Table 2. Plant quality ratings o
- Page 64 and 65: 64 EVALUATION OF PROLINE-LINKED PEN
- Page 66 and 67: 66 ANNUAL BLUEGRASS AND DOLLAR SPOT
- Page 68 and 69: 68 Table 1. Autumn 2005 versus spri
- Page 70 and 71: 70 A PRELIMINARY STUDY OF THE NON-N
- Page 72 and 73: 72 native species, covering and smo
- Page 74 and 75: 74 EFFECTS OF BUCKWHEAT RESIDUE ON
- Page 76 and 77: 76 Japanese knotweed control 28 DAT
- Page 78 and 79: 78 ENHANCED TOLERANCE TO WEED COMPE
- Page 80 and 81: 80 EFFECTS OF PLANTING AND TERMINAT
- Page 82 and 83: 82 A UNIFYING FRAMEWORK FOR SPECIES
- Page 84 and 85: 84 BIOLOGY OF MULTIFLORA ROSE: AN I
36<br />
INVASIVE AQUATIC WEEDS IN NORTH CAROLINA. R.J. Richardson, A.P. Gardner,<br />
S.T. Hoyle, and A.M. West, North Carolina State Univ., Raleigh, NC.<br />
ABSTRACT<br />
Several invasive aquatic weeds have become established in North Carolina.<br />
Notable species include hydrilla (Hydrilla verticillata (L.f.) Royle), Brazilian elodea<br />
(Egeria densa Planch.), Eurasian watermilfoil (Myriophyllum spicatum L.), brittle naiad<br />
(Najas minor All.), parrot fea<strong>the</strong>r (Myriophyllum aquaticum (Vell.) Verdc.), water<br />
hyacinth (Eichhornia crassipes (Mart.) Solms), water lettuce (Pistia stratiotes L.), giant<br />
salvinia (Salvinia molesta Mitchell), alligatorweed (Alternan<strong>the</strong>ra philoxeroides (Mart.)<br />
Griseb.), and creeping water primrose ([Ludwigia grandiflora (M. Micheli) Greuter &<br />
Burdet). Hydrilla may be found in most piedmont counties, but is sporadic in tidewater<br />
and mountain counties. Approximately 4,000 acres <strong>of</strong> Hydrilla can be found in Lake<br />
Gaston alone. Brazilian elodea is distributed intermittently throughout <strong>the</strong> entire state.<br />
Eurasian watermilfoil can be found in Lake Gaston (VA and NC) and down <strong>the</strong> Roanoke<br />
River and adjacent counties to <strong>the</strong> Albemarle Sound. Brittle naiad is infrequently<br />
distributed among at least 13 counties. Parrot fea<strong>the</strong>r is widely distributed throughout<br />
much <strong>of</strong> <strong>the</strong> state. Water hyacinth is currently in 10 counties, mainly in sou<strong>the</strong>astern<br />
North Carolina. Giant salvinia and water lettuce are limited to <strong>the</strong> Wilmington area and<br />
current infestations <strong>of</strong> both weeds are not believed to be more than 10 acres.<br />
Alligatorweed is widely distributed throughout eastern North Carolina and may be found<br />
sporadically in <strong>the</strong> piedmont.<br />
18
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