Proceedings of the Sixty-first Annual Meeting of the Northeastern ...

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42 Table 1. Insect feeding damage, yield, and silage toxin levels as affected by hybrid. Hybrid CBL CBS CBT Yield 30% Vomitoxin (#/1000 ft row) (#/1000 ft row) (#/1000 ft row) DM H6466cb/gt 7.2 0.9 0.6 19.8 0.5 H6395 12.8 3.5 0.5 19.2 0.6 DK4442bt 17.9 0.9 0.1 17.4 1.3 DK440 23.9 5.2 1.2 17.0 0.5 38H64bt 3.9 0.1 0.0 17.9 0.5 38H67 10.0 4.4 0.3 19.1 2.1 37D02 8.6 3.7 1.2 18.4 0.5 LSD (0.05) 3.8 3.6 NS 2.5 NS References Ma, B.L. and K.D. Subedi. 2005. Development, yield, grain moisture, and nitrogen uptake of Bt corn hybrids and their conventional near-isolines. Field crops research 93:199-211. Wu, F. 2006. Mycotoxin reduction in Bt corn: potential economic, health, and regulatory impacts. Transgenic research 15:277-289. 24
43 POSTEMERGENCE ANNUAL GRASS CONTROL IN CORN WITH HPPD INHIBITORS. R.R. Hahn and P.J. Stachowski, Cornell Univ., Ithaca, NY. ABSTRACT Postemergence (POST) activity of mesotrione, tembotrione, and topramezone was evaluated for giant foxtail (Setaria faberi Herrm.) and large crabgrass (Digitaria sanguinalis (L.) Scop.) control in corn (Zea mays L.). Previous research showed that mesotrione has significant POST activity on large crabgrass but little activity on giant foxtail. POST activity of topramezone on giant foxtail was observed in 2005 near Aurora, NY. Due to inadequate rainfall, giant foxtail was not controlled with preemergence (PRE) applications that were to be followed by POST applications of mesotrione or topramezone. PRE applications of 1.43 lb ai/A of metolachlor controlled only 60% of the giant foxtail. When PRE metolachlor applications were followed by POST applications of 0.094 lb ai/A of mesotrione or 0.016 lb ai/A of topramezone in combinations with 0.5 lb ai/A of atrazine and appropriate adjuvants, these POST applications controlled 87 and 99% of the giant foxtail respectively. These PRE followed by POST treatments averaged 130 bu/A of corn compared with 81 and 100 bu/A for the untreated check and PRE metolachlor treatment respectively. An experiment established in 2006 near Aurora compared POST applications of 0.094 lb/A of mesotrione, 0.123 lb ai/A of tembotrione, and 0.016 lb/A of topramezone with 0.56 oz ai/A of a nicosulfuron/rimsulfuron premix. Each of these POST treatments included 0.5 lb/A of atrazine plus appropriate adjuvants. Applications were made when giant foxtail was 3 inches tall. Tembotrione, topramezone, and nicosulfuron/rimsulfuron treatments each controlled >95% of the giant foxtail while mesotrione only controlled about 20%. Other treatments demonstrated the activity of tembotrione and topramezone for giant foxtail control in POST combinations with 1.43 lb ai/A of pendimethalin plus 1 lb/A of atrazine. When applied alone, pendimethalin plus atrazine controlled less than 20% of the giant foxtail. When the pendimethalin plus atrazine combination was tank mixed with tembotrione or topramezone, giant foxtail control was 99%. An experiment was also established in 2006 near Valatie, NY in a field with good large crabgrass pressure. Early postemergence (EPOST) applications were made when corn was in the V2 stage of development and large crabgrass was less than 0.5 inch tall. When the three HPPD inhibitor herbicides were applied following PRE application of 0.5X rate of metolachlor, large crabgrass control 3 and 9 weeks after treatment (WAT) averaged 98 and 90% respectively. These PRE followed by EPOST treatments produced an average of 120 bu/A of corn. When applied EPOST in combinations with 0.5 lb/A of atrazine and appropriate adjuvants, large crabgrass control 3 WAT was 97% with 0.094 lb/A of mesotrione or 0.123 lb/A of tembotrione, while 0.016 lb/A of topramezone controlled 90% of the crabgrass. Control declined to 60% with mesotrione and tembotrione, and to 45% with topramezone by 9 WAT. Large crabgrass control with 0.56 oz/A of nicosulfuron/rimsulfuron plus 0.5 lb/A of atrazine was 65% 9 WAT. These EPOST treatments produced an average of 120 bu/A of corn while the untreated check produced 80 bu/A. 25
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 36 and 37: 36 INVASIVE AQUATIC WEEDS IN NORTH
Page 38 and 39: 38 AMMONIUM PELARGONATE AS A BIOHER
Page 40 and 41: 40 TRINEXAPAC-ETHYL INFLUENCES EFFI
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
Page 86 and 87: 86 AN OUNCE OF PREVENTION. M.J. Van
Page 88 and 89: 88 HERBICIDE COMPARISON IN WET BLAD
Page 90 and 91: 90 Table 1. Morrow's honeysuckle (L
Page 92 and 93:
92 EVALUATION OF HERBICIDES FOR CON
Page 94 and 95:
94 EVALUATION OF HERBICIDES FOR CON
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96 HOT WATER SYSTEMS FOR VEGETATION
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98 SEEDHEAD SUPPRESSION OF ANNUAL B
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100 ROUGHSTALK BLUEGRASS CONTROL WI
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102 EFFECT OF DEW AND GRANULAR FORM
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104 USE OF TRICLOPYR TO REDUCE ANTI
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106 YELLOW NUTSEDGE CONTROL WITH SU
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108 PRE AND POST EMERGENT ANNUAL BL
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110 PUMPKIN RESPONSE TO HALOSUFSULF
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112 Figure 1. Grass cover following
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114 CHEMICAL CONTROL OF APPLE ROOT
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116 STRAWBERRY PLANTING YEAR WEED C
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118 WEED CONTROL IN NO-TILL PUMPKIN
Page 120 and 121:
120 NATURAL PRODUCT POTENTIAL FOR W
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122 THE IR-4 PROJECT: UPDATE ON HER
Page 124 and 125:
124 PEDIGREE OF A PESTICIDE. D.R. S
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126 SEEDHEAD SUPPRESSION OF ANNUAL
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128 APPLICATIONS FOR SULFENTRAZONE
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130 HORSEWEED: FROM OBSCURITY TO TH
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132 RECENT FINDINGS ON THE FIELD BE
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134 HORSEWEED RESPONSE TO NO-TILL P
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136 THE MASSACHUSETTS EXAMPLE: ONE
Page 138 and 139:
138 Supplemental NEWSS Abstracts (p
Page 140 and 141:
140 ABSTRACTS AND BIOGRAPHIES FOR P
Page 142 and 143:
142 EVALUATION OF AN HERBICIDE APPL
Page 144 and 145:
144 ALUMINUM TREATMENT FOR PHOSPHOR
Page 146 and 147:
146 BIOLOGICAL CONTROL OF AQUATIC W
Page 148 and 149:
148 THE 2002 FARM BILL AND ITS EFFE
Page 150 and 151:
150 LAND USE PRACTICE IMPACTS ON NO
Page 152 and 153:
152 A NEW STANDARD FOR DEFINING AQU
Page 154 and 155:
154 PORTRAIT OF THE HEALTH STATUS O
Page 156 and 157:
156 TEN YEARS OF VARIABLE WATER MIL
Page 158 and 159:
158 Northeastern Weed Science Socie
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160 meeting attendance numbers have
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162 members or to members of the Ex
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164 primary areas that had increase
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166 1 st place: Evaluation of Kentu
Page 168 and 169:
168 d) Resolutions Committee Appoin
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170 2005, Hilary Sandler and Brent
Page 172 and 173:
172 (Ornamentals), Rakesh Chandran
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174 Total Expenses $38,227.24 Total
Page 176 and 177:
176 PUBLIC RELATIONS Brent Lackey A
Page 178 and 179:
178 • 2 nd place team: Guelph tea
Page 180 and 181:
180 WSSA REPRESENTATIVE Jeffrey Der
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182 b. Legislative Visits training
Page 184 and 185:
184 b. Selection of a WSSA Member f
Page 186 and 187:
186 WSSA Provides Comments to the C
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188 $179 million, in contrast to a
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190 NEWSS PAST PRESIDENTS Gilbert H
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192 1986 John R. Havis University o
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194 DISTINGUISHED MEMBERS 2002 Brad
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196 1991 1 Elizabeth Maynard Cornel
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198 COLLEGIATE WEED CONTEST WINNERS
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200 1996 - Penn State Agronomy Farm
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202 RESEARCH POSTER AWARDS 1983 1.
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204 1998 1. Weed Control Studies wi
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206 INNOVATOR OF THE YEAR 1986 Nath
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208 1960 The Influence of Cultivati
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210 1975 1. Control of Jimsonweed a
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212 1985 1. Peach Response to Sever
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214 Chris Benedict Cornell Universi
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216 Robert A. DeWaine Monsanto 505
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218 Robert Hedberg USDA/CSREES Scie
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220 Brian G Lackey Weeds Inc. 250 B
Page 222 and 223:
222 Thomas Molloy University of Mai
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224 John Roy RWC, Inc. PO Box 876 2
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226 John R. Teasdale USDA-ARS Build
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228 HERBICIDE NAMES: COMMON, TRADE,
Page 230 and 231:
230 Common Name Trade Name Chemical
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Page 234 and 235:
Page 236 and 237:
Page 238 and 239:
238 COMMON PRE-PACKAGED HERBICIDES
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240 Trade Name Resolve SG Rhino Rou
Page 242 and 243:
242 COMMON AND CHEMICAL NAMES OF HE
Page 244 and 245:
244 Heck, G.R., 114 Henry, G.M., 15
Page 246 and 247:
246 MAIN SUBJECT INDEX (Herbicides,
Page 248 and 249:
248 glyphosate, 29, 38, 39, 57, 70,
Page 250:
250 shepherd's purse, 56 s-metolach
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