Vol. 54â2000 - NorthEastern Weed Science Society
Vol. 54â2000 - NorthEastern Weed Science Society Vol. 54â2000 - NorthEastern Weed Science Society
Trifolium tricolor 0 18 0 26 0 21 0 11 0 14 Sedumreflexum 28 122 11 100 23 100 3 100 8 92 Hieraceum piloseJla 0 0 0 4 0 6 0 12 0 9 Lysimachia ciliata p. 0 2 0 5 0 8 0 9 0 8 Rumex sanginea 0 76 0 62 0 58 0 49 0 48 Total plants available: 100 100 100 100 100 100 100 100 100 100 Appendix I: Identification, morphological characteristics andseason of dispersal of familiar herbaceous perennials exhibiting weedinessandindustry-recognized invasiveness. Crop plants with commonly recognizedweedtendencies Identification: Conunooname MOIl'hologyof dispernU Season of dispersal Genus. species Aegopodiumpodagraria Goutweed rhizomes all season Ajuga reptans Bugleweed, maoy cvs stolons,seeds allseasoo Artemisiasps. Silverking. queen rhizomes,seeds summer, autumn Cerastium tomentosum Snowin sununer stolons,stems summer Cephalariagigantea ConvalIaria majalis Epimediumversicolor Euphorbiaepithymoides Euphorbia myrsintes Euphorbiacyparassis Geraniumendressii Geranium macrorrhizum Hederahelix Hemeroca11isflava HemerocaIlis fulva Lamiastrum galeobdolon Lysamachiaclethroides Mecleaya cordata Mooanladidyma Oenothera fmticosa Pachysandratenninalis Phlox subulata Physostegiavirginiana Sanguisorbacanadensis Solidago sps. Tiarella cordafolia Vinca minor Giant scabious seeds,rhizomes summer, autumn Lilyof the valley rhizomes,pips all season Sulphurbishops hat rhizomes summer, autumn Cushionspurge seeds summer, autumn Myrtleleaved spurge rhizomes, seeds summer, autumn Poor mansevergreen rhizomes,seeds summer, autumn Wargravepink rhizomes,seeds summer, autumn Spessart rhizomes,seeds spring, summer, autumn Baltic ivy rootedstems summer, autumn Lemon lily stolons,daughter plants summer,autumn Roadsideorange daylily stolons,daughter plants aUseason Golden archangel stolons, rooted stems summer,autumn Gooseneckloosestrife rhizomes.seeds all season Plumepoppy rlUzomes,seeds spring, summer, autumn CambridgeScarlet rhizomes all season EveningPrimrose rhizomes,seeds summer,autumn JapaneseSpurge rhizomes.rootedstems spring, summer, autumn Mosspink rhizomes.seeds spring, summer, autumn Obedientplant rhizomes,seeds all season Canadianburnet seeds summer Goldenrod rhizomes,seeds spring, summer, autumn Foamflower stolons, rooted stems summer, autumn Myrtle stolons all season 94
NUTRIENT REMOVAL BY WEEDS IN CONTAINER NURSERY CROPS G.M. Penny and J.C. Neall ABSTRACT A field studywas conductedto determinethe nutrientremovalfroma containersubstrate by five common nurseryweed species: chamberbitter(Phyllamhus urinaria).longstalked phyllanthus(Phyllanthus /ennu/us), eclipta(Eclipta pros/rata), flreweed (Errechtities hieracifolia) andgardenspurge(Euphorbia hirta}. One-gallonpots were filled witha bark:sand substrate (6: I v:v), amended with 2.2 lb N (in the formof Scotts High N 24-4 8) andfi lb dolomitic limestone per cubic yard,anduniformly sown withweed seed of each species. Plantswerethengrownundernormal containerproductionconditionsfor 10 weeks after which plants were destructively harvested, and fresh and dry weights recorded.Ecliptaandflreweed hadthe greatestbiomassproduction.Percentnitrogenon a dry weight basis for chamberbitter, longstalked phyllanthus, eclipta, fireweed,and garden spurgewere 2.35%,1.91%,1.75%,1.95% and 1.86%respectively.Therewere no significantdifferencesin nitrogenandpotassiumuptakebetweenspecies withthe exceptionof gardenspurgeforwhichnitrogenandpotassiumuptakewas significantly less. Species differedin uptakeof phosphorous,as follows eclipta> fireweed"'" chamberbitter>longstalkedphyllanthus> gardenspurge.The nitrogenuptakeby weed species in this experimentresultedin dollarlosses (i.e. losses of appliedfertilizer)of $0.85-$1.74 per 1000 pots. In an unreplicated sample of weeds from a commercial nurseryit was foundthatspottedspurge(Euphorbia maculafa) hada nitrogenuptakeof 1.161b per 1000 pots, which equates to a dollar loss of approximately $4.09. JDepartmentof Horticultural Science,NorthCarolinaStateUniversity,RaleighNC 27695 95
- Page 43 and 44: INFLUENCE OF TIMING ON WEED MANAGEM
- Page 45 and 46: IMPACT OF GLYPHOSATE TIMING AND COR
- Page 47 and 48: PREEMERGENCE HERBICIDES INFLUENCE W
- Page 49 and 50: COMPARISON OF WEED CONTROL SYSTEMS
- Page 51 and 52: Table I Mean Percent Weed Control V
- Page 53 and 54: SMALL GRAIN WEED CONTROL - NEW WEED
- Page 55 and 56: MODE OF ACTION, ABSORPTION, TRANSLO
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- Page 65 and 66: 0... Figure1. GerminationRateof Roo
- Page 67 and 68: BIOLOGICALLY BASED WEED CONTROL STR
- Page 69 and 70: NON·NATIVE VASCULAR FLORA OF BISCA
- Page 71 and 72: principally in ruderal sites. lawns
- Page 73 and 74: EVALUATION OF AZAFENlDIN FOR PREEME
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- Page 77 and 78: Table I: Swnmary of brush managemen
- Page 79 and 80: Table I: Sequence codes and general
- Page 81 and 82: IR-4 ORNAMENTAL RESEARCH PROGRESS F
- Page 83 and 84: personnel with many of the illegal
- Page 85 and 86: TOLERANCE OF ORNAMENTAL GROUNDCOVER
- Page 87 and 88: MUGWORT CONTROL WITH CLOPYRALID AND
- Page 89 and 90: POTENTIAL WEEDINESS OF SEVERAL NEW
- Page 91 and 92: Table I: Identification, morphologi
- Page 93: Trifolium tricolor 232 26 62 0 18 S
- Page 97 and 98: CONTROL OF POAANNUA FROM MULTIPLE S
- Page 99 and 100: ANNUAL BLUEGRASS (PDaannual CONTROL
- Page 101 and 102: LATERAL DEVELOPMENT OF PLANT oaowra
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- Page 105 and 106: Table 2. Top growth weights (fresh)
- Page 107 and 108: CONTROL OF DALLISGRASS IN COOL SEAS
- Page 109 and 110: Kentucky bluegrass was rated to hav
- Page 111 and 112: Table 2. Fresh weight (grams) barve
- Page 113 and 114: MANAGING FENOXAPROP RESIST ANT CRAB
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- Page 117 and 118: Table I. Preemergence smooth crabgr
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- Page 125 and 126: WEED MANAGEMENT WITH HALOSULFURON I
- Page 127 and 128: WEED CONTROL IN SWEET CORN WITH CAR
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- Page 131 and 132: RESULTS OF NEW YORK VINEYARD TRIALS
- Page 133 and 134: HERBICIDE TOLERANCE IN CRANBERRIES
- Page 135 and 136: Classification based on action on a
- Page 137 and 138: EFFECTS OF SEVERAL POTENTIALLY USEF
- Page 139 and 140: Supplement of the 53 rd Annual Meet
- Page 141 and 142: with society activities to anyone.
- Page 143 and 144: WINTER SQUASH CULTIVARS DIFFER IN R
Trifolium tricolor 0 18 0 26 0 21 0 11 0 14<br />
Sedumreflexum 28 122 11 100 23 100 3 100 8 92<br />
Hieraceum piloseJla 0 0 0 4 0 6 0 12 0 9<br />
Lysimachia ciliata p. 0 2 0 5 0 8 0 9 0 8<br />
Rumex sanginea 0 76 0 62 0 58 0 49 0 48<br />
Total plants available: 100 100 100 100 100 100 100 100 100 100<br />
Appendix I: Identification, morphological characteristics andseason of dispersal of familiar herbaceous<br />
perennials exhibiting weedinessandindustry-recognized invasiveness.<br />
Crop plants with commonly recognizedweedtendencies<br />
Identification:<br />
Conunooname MOIl'hologyof dispernU Season of dispersal<br />
Genus. species<br />
Aegopodiumpodagraria Goutweed rhizomes all season<br />
Ajuga reptans<br />
Bugleweed, maoy cvs stolons,seeds allseasoo<br />
Artemisiasps.<br />
Silverking. queen rhizomes,seeds summer, autumn<br />
Cerastium tomentosum Snowin sununer stolons,stems summer<br />
Cephalariagigantea<br />
ConvalIaria majalis<br />
Epimediumversicolor<br />
Euphorbiaepithymoides<br />
Euphorbia myrsintes<br />
Euphorbiacyparassis<br />
Geraniumendressii<br />
Geranium macrorrhizum<br />
Hederahelix<br />
Hemeroca11isflava<br />
HemerocaIlis fulva<br />
Lamiastrum galeobdolon<br />
Lysamachiaclethroides<br />
Mecleaya cordata<br />
Mooanladidyma<br />
Oenothera fmticosa<br />
Pachysandratenninalis<br />
Phlox subulata<br />
Physostegiavirginiana<br />
Sanguisorbacanadensis<br />
Solidago sps.<br />
Tiarella cordafolia<br />
Vinca minor<br />
Giant scabious seeds,rhizomes summer, autumn<br />
Lilyof the valley rhizomes,pips all season<br />
Sulphurbishops hat rhizomes summer, autumn<br />
Cushionspurge seeds summer, autumn<br />
Myrtleleaved spurge rhizomes, seeds summer, autumn<br />
Poor mansevergreen rhizomes,seeds summer, autumn<br />
Wargravepink rhizomes,seeds summer, autumn<br />
Spessart rhizomes,seeds spring, summer, autumn<br />
Baltic ivy rootedstems summer, autumn<br />
Lemon lily stolons,daughter plants summer,autumn<br />
Roadsideorange daylily stolons,daughter plants aUseason<br />
Golden archangel stolons, rooted stems summer,autumn<br />
Gooseneckloosestrife rhizomes.seeds all season<br />
Plumepoppy rlUzomes,seeds spring, summer, autumn<br />
CambridgeScarlet rhizomes all season<br />
EveningPrimrose rhizomes,seeds summer,autumn<br />
JapaneseSpurge rhizomes.rootedstems spring, summer, autumn<br />
Mosspink rhizomes.seeds spring, summer, autumn<br />
Obedientplant rhizomes,seeds all season<br />
Canadianburnet seeds summer<br />
Goldenrod rhizomes,seeds spring, summer, autumn<br />
Foamflower stolons, rooted stems summer, autumn<br />
Myrtle stolons all season<br />
94
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