Vol. 51â1997 - NorthEastern Weed Science Society

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108 CGA-77102: A New Herbicide for Preemergence <strong>Weed</strong> Control in Corn and Soybeans . B. Vitolo, M. G. Schnappinger, T. A. Bauer, B. S. Manley, and S. W. Pruss 1 ABSTRACT CGA-77102, the S-chiral isomer of metolachlor, is a new acetamide herbicide being eveloped by Ciba Crop Protection for preemergence grass and broadleaf weed contro in com (Zea mays L.) and soybeans (Glycine max L.). Metolachlor is an acet .de herbicide first registered for use in com by Ciba-Geigy Corp. in November, 1976. Since then, it and various formulations of Dual and Bicep brand herbicides have contin ed to grow in use. Metolachlor is currently the second highest volume herbicide used' the u.s. Metolachlor is a mixture of isomers, and these isomers, depending on their nfigurations, can be grouped into R- and S- forms. The majority of the herbicidal activi ofmetolachlor comes from the S-isomer, designated CGA-77102, while the R isome is relatively inactive. Synthesis technology now allows for the selective produ tion of the active isomer. Replicated field trials were conducted in New York, Maryland, Pennsylvania, Ohio, d Indiana from 1994-1996 to evaluate efficacy, duration of activity and crop toler ce across soil types on yellow nutsedge (Cyperus esculentus L.), and a wide range of grass and broadleafweeds. These trials, and others conducted across the U.S., show an equivalency of CGA-77102 to metolachlor at a ratio of 0.625:1. Com tole ce trials utilizing rates up to four times the normal use rate were conducted to dete ine the optimum CGA-77102:benoxacor ratio. These trials indicated a ratio of 20: 1, hich utilizes the same benoxacor rate per acre as in the current Dual II and Bicep II br ds. 1Res arch Station Manager, Senior Scientist, Senior Research Representative, Research Repr sentative and Regional Research Manager, respectively, Ciba Crop Protection, Huds n, NY, 12534
109 GA-277416 AND CGA-248757 FOR POSTEMERGENCE WEED CONTROL IN SOYBEANS M. G. S bnappinger,D. B. Vitolo, T. A. Bauer, B. S. Manley,and S. W. Pruss' ABSTRACT CGA-277476is a new sulfonylureaherbicideand CGA-248757is a protoporphyrinogenoxidase inhibitingherbici beingdevelopedby Ciba Crop Protection for postemergencebroadleafcontrol in soybeans(Gly. tnemax L.). CGA-277476providesbroadspectrumbroadleafweed control coupled with sho residualactivity,which allows for normalnortheasterncrop rotations without concern for ver injury. CGA-248757providesrapid bumdown ofbroadleafweeds coupled with minimalcro injuryand short residual activityto allow for maximumrotational flexibility. CGA-248757 is an excellenttank mix partner with CGA-277476and numerousother herbicidesto bro en the spectrum and increasethe speed of activityon susceptibleweed species, fieldtrials were conducted in Indiana,Maryland, New York, Pennsylvania,and ough 1996to evaluatebroadleafweed controlprovided by CGA-277476 applied alone combinedwith CGA-248757.CGA-277476appliedpostemergenceat 66-79 g ai/haprovided co trol of important weeds such as commonragweed (Ambrosia artimisiifolia L.), velvetleaf(Abuti n theophrasti Med.), commoncocklebur(Xanthium strumarium L.), pigweeds (Amaranthus ), burcucumber(Sicyos angulatus L.) and morningglories(Ipomoea spp.) while suppressionof c mmon lambsquarters(Chenopodium album L.) and Canadathistle [Cirsium arvense(L.) Sco .] were also noted. Tank mixcombinationsofCGA-277476 at 66-79 g aiIhaplus CGA-248757appliedat 4 g ai/hawere found 0 broaden the weed spectrum,widen the window of application,and increase the speed of .. yon severalweeds. Velvetleafwas controlledwhen treated up to a height of one m with the c mbinationswhileCGA-277476 appliedalonewas effectiveat heights of 15cm or less. Additio weeds for which control or suppressionis enhancedby the combinations includePennsylv . smartweed (Polygonum pensylvanicum L.), easternblacknightshade (Solanum ptyca m Dun.), and spurred anoda (Anoda cristata L.) 1 Senior Scienti ,Research Station Manager, Senior Research Representative,Research Representative, d RegionalManager, respectively,Ciba Crop Protection, Washington,PA 15301
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1 DE~LOPING BEST MANAGEMENT PRACTIC
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3 MATERIALSANDMETHODS Experiments w
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I 5 I Table 3. Stand density of oat
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7 TaL~NCEaFHNE~CU~TaCL~HarnM Larry
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9 I CONTROLLING QUACKGRASS WITH CLE
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BELTSV~LLE 11 SUSTAINABLEAGRICULTUR
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Ii 13 I The 1996NEWSSCollegiateWeed
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15 EFFECTOF rREPLANT TILLAGEANDNICO
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17 i PENNMUjLCH, A NEW MULCH FOR TU
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19 cover the sta~es in the Northeas
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21 I TABLEt CORN WEED CONTROL EFFIC
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23 COMMON LAMBSQUARTERS CONTROL IN
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I I 25 I Table 2. Effectivaness of
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27 PERFORMANCE OF PREEMERGENCE TREA
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I i I i I I 29 EFFECT OF TANK-MIXIN
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I 31 I EVALVATIONOF WEED CONTROLA
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I I i 33 I EFFECT$ OF EXP 31130A AN
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35 Effect OfPO~T ApplicationTimingo
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II I ! I ! Ii I I 37 PREE~ERGENCE C
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I 39 U+ OF SLUDGE BASED FERTILIZERS
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i I 41 I EFFECT OF fSOXABEN APPLIED
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I 43 ~STCRABGRASS CONTROL AS lWO os
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I II 45 iI Gallery* f,r Weed Preven
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I POTENTIAL I I 47 USE OF EXP-31130
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I" i 49 j PFMERGENCE CONTROL OF PRO
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51 TIIE E...·rL"",,- L OF TRINEXAP
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53 PERF011MANICEOF ISOXAFLUTOLE IN
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55 ISOXAFL OLE COMBINATIONSWITH PRE
Page 57 and 58: 57 Weed Interference in Full Season
Page 59 and 60: 59 HERBICIDE TRATEGIES FOR CONTROL
Page 61 and 62: 61 Table 1.Eff ct of WeedControlTre
Page 63 and 64: 63 DETECTION ND MOVEMENT PATTERN OF
Page 65 and 66: 65 TRAILERING AFETY: A TRAINING COU
Page 67 and 68: 67 EV ALUATIO OF WIT..DFLOWER ESTAB
Page 69 and 70: 69 LlNGSNOW ECOSYSTEM PROJECT: MICR
Page 71 and 72: 71 TABLE 1: Tree . jury provided by
Page 74 and 75: 74 GSNOW ECOSYSTEM PROJECT: WHITE S
Page 76 and 77: 16 cherry (Pnmus se otina ranks fou
Page 78 and 79: .J 78 Table 1. Density, (D), relati
Page 80 and 81: ~---------_._-~---_.._--- 80 A NEW
Page 82 and 83: 82 WEED AFFINITY GROUPS AS A TOOL I
Page 84 and 85: 84 NEW TE HNIQUE TO COMPARE EFFICAC
Page 86 and 87: 86 PRO UCTION PERFORMANCE OF GLYPHO
Page 88 and 89: 88 Managing nterseeded Cover Crops
Page 90 and 91: -----------t----~--- 90 Since weed
Page 92 and 93: 92 The mechanistic model (equ. I) a
Page 94 and 95: 94 Exploring the Feasibility of Pro
Page 96 and 97: 96 INHIBI ING THE DEVELOPMENT OF CI
Page 98 and 99: 98 However it .ncreased the control
Page 100 and 101: 100 LIVERWORT AND PEARLWORT MANAGEM
Page 102 and 103: 102 ULFENTRAZONEAND HALOSULFURON:HE
Page 104 and 105: 104 estern New York Nursery IPM Pro
Page 106 and 107: 106 C MMONRAGWEEDCONTROLIN FIELD CO
Page 110 and 111: 110 POSTEMERGENCEWEEDCONTROLIN SOYB
Page 112 and 113: 112 E FECTS OF REPEATEDLATE-WINTERH
Page 114 and 115: 114 GSNOW ECOSYSTEl\1 PROJECT: NITR
Page 116 and 117: 116 RESULTS AND DISCUSSION GI fosin
Page 118 and 119: ---------T---~~-- 118 EVALUA ON OF
Page 120 and 121: 120 B USB CONTROL PROVIDED BY LOW V
Page 122 and 123: ------- 122 W VOLUMEWEED AND BRUSH
Page 124 and 125: 124 EVA UATION OFGLYPHOSATEFOR DORM
Page 126 and 127: 126 E ALUATION OF IMAZAMETH FOR WEE
Page 128 and 129: 128 Presidential Address Delivered
Page 130 and 131: 130 Ho much land can ten billion pe
Page 132 and 133: Waggone December 24, 1994 132 count
Page 134 and 135: Waggone December 24, 1994 134 25 Pa
Page 136 and 137: Waggone December 24, 1994 136 which
Page 138 and 139: December 24, 1994 138 sets the pecu
Page 140 and 141: ----------+---- Waggone December 24
Page 142 and 143: Waggone December 24, 1994 142 soil
Page 144 and 145: Waggone December 24, 1994 144 ~oo~
Page 146 and 147: Waggoner December 24, 1994 146 350
Page 148 and 149: 148 Appendix Calculate the environm
Page 150 and 151: 150 alone ac eptably controls typic
Page 152 and 153: 152 opportu ity to use sethoxydim a
Page 154 and 155: ---------+----------- 154 IMPACT OF
Page 156 and 157: 156 The STS® time line: • 1986 -
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-------_. __ ._._--- d •••..
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-----_._~-_._.__.- 160 SYNCBRONYTM.
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162 Government approvals for Roundu
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HH i ! 164 AG6101 l.oundup Ready®
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166 n Lib rty LinkTM soybeans will
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168 IMITMCORN YIELD PERFORMANCE* (H
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170 to $15 an ere depending upon ho
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172 e recent occurrence has been th
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174 He bicide was added to the tiss
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176 it can at ti es be a weed in Ke
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178 ty's main campus that Rhizocton
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180 weight conclu qualit treatm and
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182 during the st or 2nd growing se
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184 TABLE 1. Mean raspberry cover (
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186 (A) STEM VOLUME - SPRING TRTM.,
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188 concluded at 5.1 em of simulate
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190 ACKNOWLEDGEMENTS ank United Agr
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192 AGRICULTURE NEEDS MORE WEED SCI
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194 Who is going to provide the edu
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20 18 - 16 A v 14 e r 12 a g 10 e s
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198 50th Annual Business Meeting of
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200 • Graduate team winners were:
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202 solclose to the New Year, as it
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----~------ 204 e Committee Reports
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! I 206 I Administration $1,527.23
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208 Glickman comments that his "hig
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210 York Sta~e. It is still unclear
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I I I Bingham, SamuJ Wayne Virginia
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214 Cianessi, Leonard Nat. Center o
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L I • I I I I Langston, Vemon Dow
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__________ m---+---m__ .... 218 Rie
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-----------~ I I 220 Whalen, Mark Z
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Helicopter Applicators, Inc. Martin
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224 Employers of NEWSS members in 1
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.l I I I I 226 NEWSSPASTPRESIDENTS
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228 AWARD OF MERIT 1971 1972 1973 1
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1995 I I I 230 Fra~cis J. Webb •
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II II 232 1995 1'R~chard Ashly Univ
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234 1991 1992 1993 1994 1995 1996 1
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I, I 236 1989 - AmeriJan Cyanamid,
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--------_.~-------- 238 RESEARCH PO
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1995 1 - iAComparison of Broadleaf
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242 1960 1961 1962 . The Influence
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244 1975 1 - Control of Jimsonweed
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246 1984 1 - Pre-TransplantOxyfluor
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248 Common or Code name trade Name
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250 Common or Code name , rrade Nam
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252 I Common ot Code namel I I flur
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254 Common o~ Code name' I I i Trad
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256 Common or i Code name I Trade N
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258 , Ackley, J.A .• 7 Adams, R.G
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260 1 I 2,4-D 2, 14, 1~, 22, 23,28,
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262 I Agrosticpalus(ris 47, 48 Agro
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SUBJECT INDEX Application T~mings 4
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266 WEED INDEX Abutilon theop~rosti
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Vol. 51â1997 - NorthEastern Weed Science Society

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Vol. 51â1997 - NorthEastern Weed Science Society