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

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46 ROTARY HOE EFFICACY IN CORN: INFLUENCE OF SOIL TYPE AND MOISTURE. M.G. Burton, C. Reberg-Horton, G.T. Place, and S.T. Hoyle, North Carolina State Univ., Raleigh. ABSTRACT Early season in-row (within 10 cm of crop row) weed control in corn was evaluated at two locations in 2006. Factors in the study included the different soil types (sand vs. loam) at the Sandhills (Jackson Springs, NC) and Cunningham (Kinston, NC) Research Stations, and moisture. The experiment was established in a stripped-plot design with irrigation level (none, 1.25 cm and 2.5 cm rainfall equivalent) in stripped plots and rotary hoe frequency in subplots. Rotary hoe frequency treatments included: None, 5, 5+12, 12+19, and 5+12+19 DAP. Three weeks after the conclusion of the 19 DAP rotary hoe treatment, counts of surviving weeds within 10 cm of the crop row were counted and identified by species (these weeds were considered likely to escape cultivator sweeps in subsequent cultivation passes with different equipment. The HADSS computer program was used to calculate potential yield loss using this species and density data. No interaction was observed between soil moisture and rotary hoe treatments at either location. Soil moisture level did not affect corn stand at either location. Corn stand was reduced (5%) by multiple rotary hoe passes only at the Cunningham farm. Weed density was affected by soil moisture only at the Sandhills location, where dry conditions resulted in lower weed emergence in the low moisture treatment (p=0.02). Weed density was reduced at both locations by multiple passes of the rotary hoe, and at the Sandhills location by a single pass (5 DAP) (p
47 EFFECTIVENESS OF A ROLLER/CRIMPER FOR CONTROL OF WINTER ANNUAL COVER CROPS. W. Curran, S. Mirsky, and M. Ryan, The Pennsylvania State Univ., University Park. ABSTRACT Cover crop roller/crimpers are increasing in popularity. In 2005, Penn State University constructed a roller/crimper designed after a Rodale Institute prototype. Over the last two years, several experiments have investigated the effectiveness of the roller/crimper for control of winter annual cover crops. Most of the efforts at Penn State have focused on cereal rye control as influenced by planting date in the fall and termination date in the spring. In 2006, additional trials examined reduced rates of herbicide in combination with the roller/crimper for control of both cereal rye (Secale cereale) and hairy vetch (Vicia villosa). Glyphosate was examined in cereal rye and 2,4-D was used in the hairy vetch trial. A third experiment in 2006 examined the effectiveness of the roller/crimper for control of winter rape (Brassica napus) alone and in combination with glyphosate. In the rape experiment, two application timings based on cover crop growth stage were examined. In all experiments, either Roundup Ready corn or soybean was no-till planted shortly after rolling the cover crops and glyphosate was used for in-season weed control. The results of the cereal rye experiment showed that the roller treatment alone only provided about 50% control of the cover crop. The rye was just beginning to head and not yet susceptible to control with rolling alone. The combination of glyphosate applied at either 0.093 lb ae/A (1/8X) or 0.1875 lb/A (1/4X) with rolling provided 85% and 94% rye control, respectively 14 days after application. The reduced rates of glyphosate alone provided 67 and 89% control. In the hairy vetch trial, rolling alone provided about 75% control of the hairy vetch and the addition of 2,4-D LVE increased control to over 90%. Again, the hairy vetch was just beginning to flower and not completely susceptible to control from rolling alone. Hairy vetch is very susceptible to 2,4-D and application of 0.25 lb ae/A provided effective control regardless of the roller treatment. Finally, rolling winter rape alone at either the early or mid flowering stages of growth was not very effective for control and a full rate of glyphosate (0.75 lb/A) was necessary to achieve greater than 85% control. Glyphosate applied at 0.375 lb/A provided about 80% winter rape control. The results of this research show that reduced rate herbicide programs combined with roller/crimper technology can be more effective for control of certain cover crops such as cereal rye than either tactic alone. For other cover crops such as hairy vetch and winter rape, the roller/crimper is less effective for control and will require alternative tactics or strategies for effective control prior to establishing a cash crop. 29
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 42 and 43: 42 Table 1. Insect feeding damage,
Page 44 and 45: 44 WEED CONTROL WITH TOPRAMEZONE PR
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
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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
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120 NATURAL PRODUCT POTENTIAL FOR W
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122 THE IR-4 PROJECT: UPDATE ON HER
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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
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140 ABSTRACTS AND BIOGRAPHIES FOR P
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142 EVALUATION OF AN HERBICIDE APPL
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144 ALUMINUM TREATMENT FOR PHOSPHOR
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146 BIOLOGICAL CONTROL OF AQUATIC W
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148 THE 2002 FARM BILL AND ITS EFFE
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150 LAND USE PRACTICE IMPACTS ON NO
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152 A NEW STANDARD FOR DEFINING AQU
Page 154 and 155:
154 PORTRAIT OF THE HEALTH STATUS O
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156 TEN YEARS OF VARIABLE WATER MIL
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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
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168 d) Resolutions Committee Appoin
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170 2005, Hilary Sandler and Brent
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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
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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
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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,
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230 Common Name Trade Name Chemical
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238 COMMON PRE-PACKAGED HERBICIDES
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240 Trade Name Resolve SG Rhino Rou
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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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