Vol. 54â2000 - NorthEastern Weed Science Society

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Physostegia viginiana variegate rhizomes all season Polygonatum multiflorum variegatum var sol seal rhizomes all season Sanguinaria canadensis Bloodroot rhizomes all season Sanguisorba obtusa Japaneseburnet seeds sununer Sedurn acre Golden sedurn leaves, stems, plantlets summer, autumn Sedum mmus Tiny sedum leaves, plantlets all season Sedum reptans. stolorufera Creeping sedum leaves,stems,plantlets all season, dormant Silphium perfoliatum Cup plant. rosinwecd rhizomes, seeds sununer, autumn Solidago rugosa 'Fireworks' rhizomes,seeds all season Stylophorum diphyllum Celandine poppy rhizomes, seeds spring,sununer,autunln Symphyrumgrandiflorum Comfrey rhizomes,seeds spring,sutumn Tiarella cordifolia 'Running Tapestry' stolons all season Tiarella cordifolia 'Slick Rock' stolons all season Veronica pectinata Comb speedwell stolons spring, autumn Veronica spicata Waterperry' stolons spring, sutumn Vinca minor variegated 'Ralph Sbugert' stolons all season I Capabk of infesting host plants wn..nhoa plants are fully donnant; weedmay or may no( exhibit season of dormancy Table-i. The occ~~ce within~ relative distance crop~ traveled during a single season;' Numbers of infested plants found at a given distance (feet, acres) Species: Less than50 ft 50-100ft lOa-200ft 1-2acre 2-5acre Ixerisdentata 556 478 306 88 56 Viola koreana 343 201 106 51 42 Viola labradorica 247 198 142 29 12 Oxalis acetostella 301 228 216 60 31 Trifolium tricolor 108 56 43 28 3 Sedum reflexum 228 217 209 187 % Hieraceumpilosella 18 9 6 0 0 Lysimachia ciliata p. 46 18 4 0 0 Rumex sanginea 208 156 98 12 0 'The numbers of plants infested in a linear measure, independent of host plant species or genera. Table 3: The numbers of crop weedsencountered in -stockplants grouped by plant association. Numbers of ewfound Pet category of crop plant Crop weed: Ixens dentata Herb. per. 1,504 Woody trees Viola koreana 743 176 192 12 Viola labradorica 628 143 190 ° Oxalis acetostella 736 191 208 63 Woody shrubs AnnuaIs(flats)i 233 163 43 Annuals
Trifolium tricolor 232 26 62 0 18 Sedum reflexum 933 209 178 13 1,036 Hieraceum pilosella 33 4 16 0 0 Lysimachiaciliata p. 68 14 19 0 0 Rumex sanginea 474 106 109 0 6 Total plants available: 25,000 2,500 2,500 25,000 20,000 4 Majority of annual flats had sold priorto weed movement or seed disperal -, Table 4: Categorizing host plant strength as a function ofpot coverage and soil visibility Category: Criteria: Strength Examples: Category I: 75-95% I Hemerocallis, Iris, Lupinus, Hosta, Lilium, Delphinium, Eupatorium Category 2: 50-75% 2 Campanula, Geranium, Euphorbia, Stokesia, Columbine, Helenium, Malva Category 3: 25-50% 3 Veronica, Salvia, Erica, Calluna, Heuchera, CaImagrostis, Festuca Category 4: 5-25% 4 Asters, Ground covers, Sedum, Symphytum, Penniseturn, Galium Category 5a: -5% 5a Monarda, Physostegia, Solidago, Phalaris, Lysarnachia, Vinca, Aguja Category 5b: -5% 5b Epimedium, Tiarella, Waldensteina, Lamium, Solomon Seal, Chrysagonum " Table 5: Invasive potential ----, of CW as a function of host plant category: Numbers of plants per strength category infested with crop weeds Crop <strong>Weed</strong>s: L a, a, ±.; 5a: Sh: Ixeris dentata 86 72 48 50 56 32 Viola koreana 72 56 52 56 39 38 Viola labradorica 82 85 60 56 52 48 OxaltsacetosteUa 53 62 49 53 61 49 Trifolium tricolor 28 16 9 II 6 3 Sedum reflexum 90 78 63 66 69 58 Hieraceumpilosella 16 6 3 0 0 0 Lysimachiaciliata p. 28 4 0 0 0 0 Rumex sanginea 66 48 49 39 25 18 Total plants available: 3,500 3,500 3,000 3,000 2,500 2,000 Table 6: The number of cw found in herbicide treated crop plants 6 and 16weeks after treatment(wat): Number of cwplants counted per herbicide treatment made to mixed perennials Gallery Dacthal Preen Scotts om Rout Crop <strong>Weed</strong>: 6wat 16wat 6wat 16wat 6wat 16wat 6wat 16wat 6wat 16wat Ixeris dentata 2 98 4 96 3 100 3 86 0 58 Viola koreana Viola labradorica Oxalis ace10stella 4 16 21 86 92 100 12 31 3 92 100 100 5 6 11 98 97 100 3 4 5 81 82 100 2 3 4 62 68 100 93
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WEED REMOVAL TIMING WITH ROUNDUP RE
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EFFECT OF HERBICIDE RATES AND IRRIG
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40 Effect of Pronone Applied with A
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Comparisonof Sulfosateand Glyphosat
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N 1175 feet Roundup Ready Studies R
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VIRGINIA TECH'S ONLINE WEED IDENTIF
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WEED CONTROL AND YIELD OF CUT FLOWE
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Table I. Effect of napropamide and
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The Effect of Total Postemergence H
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with commercial fertilizer. In gene
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HERBICIDE APPLICATIONS VERSUS HANDW
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exceeded 4. The success of training
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_u ____ Table2: Estimatesof herbace
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DOUBLE CROP CORN WEED CONTROL IN VI
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ANNUAL WEED AND GRASS CONTROL IN CO
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MANAGING QUACKGRASSINFESTATIONSAS C
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USING HERBICIDE RESISTANT HYBRIDS T
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NICOSULFURONIRIMSULFURON COMBINATIO
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GLYPHOSATE ALONE AND PRECEDED BY PR
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ROUNDUPVS. LIBERTY:WHATHAVE WE LEAR
Page 41 and 42: In summary, application timing for
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
Page 57 and 58: INFLUENCE OF CROWNVETCH WITH AND WI
Page 59 and 60: lRUMPETCREEPER, HONEYVINEMILKWEED,A
Page 61 and 62: FLUFENACET PLUS METRIBUZIN PLUS ATR
Page 63 and 64: CONTROLLING ASTERACEAE WEEDS WITH R
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
Page 75 and 76: AUTOMATING MONITORING OF ROADSIDE W
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: Table I: Identification, morphologi
Page 95 and 96: NUTRIENT REMOVAL BY WEEDS IN CONTAI
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
Page 103 and 104: RE-ROOTING OF FOUR VARIETIES OF CRE
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
Page 115 and 116: ADVANCED FORMULATION TECHNOLOGY FOR
Page 117 and 118: Table I. Preemergence smooth crabgr
Page 119 and 120: 0.57EW at O.l21bs ai/A plus Confron
Page 121 and 122: EFFICACY OF DITHIOPYR FORMULATIONS
Page 123 and 124: EFFECTS OF DROUGHT ON THE INTERFERE
Page 125 and 126: WEED MANAGEMENT WITH HALOSULFURON I
Page 127 and 128: WEED CONTROL IN SWEET CORN WITH CAR
Page 129 and 130: COMPARISON OF USING LEAF AREA AND W
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.
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WINTER SQUASH CULTIVARS DIFFER IN R
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INCORPORATING QUINCLORAC IN AUTUMN
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Control efforts aim to eradicate bo
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Table I Weed canopy, insect and dis
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Table 1: Percent mortality of respr
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Vol. 54â2000 - NorthEastern Weed Science Society

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Vol. 54â2000 - NorthEastern Weed Science Society