Vol. 16â1962 - NorthEastern Weed Science Society

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170 Yie.s of U.S. #1 Delus potatoes ranged from3~a, bushels to 491 bushels per acre; and those of Kennebec',fran 508 to 646bu~helS per acre. The variability of the individual yields was such that no statistically significant differences between treatments ~' ,found. Th, sPCIP'11:1c gravity of the Kennebec potatoes averaged 1.078 and,the,Delus 1.083~:' Procedure Post-hilling and layby herbicide applications, 1961 These tests were randomized in blocks which alternated with the pre-emergent blocks. They were planted ,at the same time ancf:Ileaeived the same fertilization and managementexcept that they were CUltivated on May31, June 6, 16, and 20, with preliminary hilling on June 26 and final hilling on June 30. Ladysthumband ragweed were eliminated from the tops of the hills by the cultivating process. The field was overseeded with millets but the heavy fOliage cover and dry weather minimized the stand. The post-hilling herbicide sprays were applied June 26 with a calibrated sprayer at 'the rate of 40 gallons to the acre. The granular materials were weighed out individually and mixed with sand befo" spreading by hand. A few plots received vine-down applications on August 15. The vines were green and leafy but had opened up enough so herbicides COuldreach the soil. Trietazine spray prod~ced a little yellowing on the older leaves but this effect disappeared within two week$. Results The materials used, stands of weeds and yields of U.S. #1 Kennebecand Delus potatoes are shown in table 3. The yieldS of Kennebecs ranged from 500 bushels per acre where the double application of t1'ietazine was used to 631 on the falone plots. The controls averaged 590 bushels. The maximumand minimum yields of Oelu6 potatoes were 481 and 341 bushels per acre for these same two treatments, respectively. The check plots of Delus produced 438 bushels per acre. Unfortunately, the variation within blocks was such that significance could not be established at the 5%level. It is suspected, however, that the lowest average yields obtained from the combined application of trietazine at layby and vine-down is in part due to the heavy application of this herbicide. Whentubers of the, Kennebecvariety were dug in ~9ust for trietazine analysi~, smaller potatoes than in the check plots were found. ~ext season it is planned to' harvest potatoes at several periods to see whether the post-hilling spray retards tuber development. The weed stand was rather light. Proper CUltivation in June produced a nearly weedfree area. Ladysthumb(Polygonvmgersicaria) and some of the annual millets were present. '" The data in table 3 show that granular falone, alanap, zytron, eptam, dalapon, and amiben were effective in reducing the stand of annual grasses. Falone spray and trietazine spray were also effective. Repeating'the application of falone or trietazine at vine-down was no more effective than the post-h~lling treatment alone. The repeat application of
Table 3. Post-hilling weed control experiments with Kennebec and Delus potatoes (R.I. 1961). Active toxicant Ib/A U.S. #1 <strong>Weed</strong>rating* Vines BulA Ladys- Annual Material Layby down Kennebec Delus thumb 9/26/61 grasses Falone 4 631 481 7.2 9.3 Falone 4 4 629 440 8.1 9.5 Falone (gran. ) 4 554 421 7.7 :9.0 Falone (gran.) 4 4 514 406 7.4 9.1 Alanap (gran.) 4 458 391 6.0 9.0 Dalapon (gran.) 5 505 428 5.8 8.5 Zytron 5 598 445 5.0 8.6 Zytron 8 589 416 5.3 8.6 Zytron (gran.) 8 621 461 5.6 9.1 Eptam (gran.) 5 571 445 6.6 8.7 Eptam (gran.) 5 4 550 428 9.0 9.6 Trietazine 3 506 405 9.0 9.2 Trietazine 3 2 500 341 9.4 9.5 Amiben (gran.) 5 593 465 8.6 9.5 No chemical** 590 438 6.3 7.8 *low numbers = poor control, 10 = no weeds **regular cultivation eptam seemed somewhat more effective in reducing the stand of ladysthumb. Where eptam was used at post-hilling and vine-down the plots were nearly free of this pest. Falone retarded the growth of ladysthumb while the other "grass" herbicides did not materially effect it. Trietazine prevents the development of this weed rather well. Summary The grass herbicides, such as falone or alanap at 4 Ib/A, eptam, dalapon or alanap at 5 Ib/A and zytron at 8 Ib/A reduced the stands of grasses without altering the yields of U.S. #1 potatoes. Dalapon and zytron at 5 Ib/A did not appear quite as effective as the others during 1961. Repeat applications of falone or trietazine at vine-down did not increase the effectiveness this year. A repeat application of granular eptam was more effective than one application. Trietazine is an effective herbicide for annual weeds. Its effect on the rate of development of potato tubers needs further· investigation. Literature Cited 1. Bell, R. S. and Erling Larssen. 1960. Pre-emergent and post-hilling weed control tests with Katahdin potatoes, 1958-59. NEWCC, pp. 201-206. 2. Ilnicki, R. D., J. C. Campbell, T. T. Tisdell and H. A. Collins. 1961. Progress report on lay-by weed control in potatoes. NEWCC, p. 55. 3. Trevett, M. F., H. J. Murphyand Wm.Gardner. 1960. NEWCC, pp. 207-213. 171
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PRESENTANDFUTtJU OF AQUATIC'. WIlD
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Complete reports from 12 Nor~heaste
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The reawakening in aquatic weed con
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,10.1ng -2,4.,;iD (19), 2,4~5.T (4)
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9 The Role of the State in Res idue
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,., 1'4 keep developmental work in
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In addition to a review of field an
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State workers have to consider resi
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The vigorous regrowth of quackgrass
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during t,he sUllllller.is l,ower ll
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5. llslapon and other chlorine,ted
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23 • ·i INTRODUCTION: !!'he Bear
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Some damage to runners rssul ted fr
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27 CELLSTRUCTUREANDPLANTGROWTHCRMON
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pel'fQ.,..d,-.ear17M1932. that the
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a copious precipitate deposits afte
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B) A general review of the subject
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This narrative of ineptitude must b
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does Jo run a recreational facility
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Another pote1U:ialuse for chemicals
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Newapproaches in the use of herbici
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43 sentence would bear this out". T
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More and more each year since the a
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11. Rice, E. J. The effects of cUlt
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PFSI'ICIDESUSED - - - - - - - - - -
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__..:I whether or not these apparen
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Dosage. Ib./acre Dimethyl tetrachlo
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~ ~_~ __ L L Table 2. Weed Susceoti
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- - - - - - - - ~, - - - - --- - -
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Table 7.. Weed Control in :l:!c,Ql1
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Table '1. Rat.1lISstI 'Of carrot an
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H , 'ta~l!. g,._~e~_O!~ut~• .:.:.
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65 plant press and dried in a f~ced
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67 Tablet. 'lIi! EFFECT'or AN'INO'l
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69 THE INFLUENCE JIt P.I!ll'ROLEUM
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71 1 CDEC(Ee) 2 " " 3 4 " 5 " " 6 7
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!a~l~ 1._ ~!:.c!: :!!1~hJl!:e.::m~d
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75 EFFECT;OFCOMPOSITIONANDVOLUMEOF
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A LOGARITHMICSPRAlERFORSMALLPLCflSY
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79 Do~ Calculations The actual init
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Selective Herbicides for Several Cr
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83 Susceptible weeds Tolerant weeds
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85 Marion Market 9 9 9 9 9 9 9 9 Da
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Table 5. Bai
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weeding of Lima Bean. With Chemical
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EFFECTOF HERBICIDESONQUALITYANDYIEL
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Results Date treated: 9/6/61 Soil m
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95 Date planted: 915/61 Date treate
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Table 3. Yield Data on Hanover and
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Weeding of Carrots With 'pre-lilanU
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101 WEEDCONTROLSTUDIESIN SEElED ONI
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Weather conditions at the two locat
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In contrast to the damage noted in
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107 Literature Cited 1. Althaus. R.
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Table 1. Weed control: stand of pla
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Results and Discussion. The data, p
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CIPO, Vegadex, and Randox Singly or
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Table 1•. Wa. control, stand of p
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'Ihree experiments were conducted i
Page 119 and 120: a- Table 2_"COIIlpartsonof' Several
Page 121 and 122: fJ Table 3. CcBparison of Several.
Page 123 and 124: c
Page 125 and 126: Table 1. Seeding and Weed Counts on
Page 127 and 128: WEEDCONTROLANDTHE IMPROVEMENT OF SE
Page 129 and 130: Following emergence of the tomato s
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Page 133 and 134: DISCUSSIONOF RESULTS Transplant Tom
Page 135 and 136: harvest was covered with weeds, and
Page 137 and 138: An additional 2 years of tests on f
Page 139 and 140: ~ Table 2 .--l Average Number and P
Page 141 and 142: ~ Table 4 Total Yields in Number an
Page 143 and 144: "" ~ Table 6 Bvalu~t1.on of S&l~nto
Page 145 and 146: of weed eoneee I without inj ury 't
Page 147 and 148: 1. Associate Research Specialist in
Page 149 and 150: Stulllll&ry A study was lh1tlatedto
Page 151 and 152: Table 2. The residual effects of se
Page 153 and 154: FURTHEROBSERVATIONS ONCONTROL OF TH
Page 155 and 156: Table 3 - Mean per cent brake contr
Page 157 and 158: lAssociate Research Spec1alist in W
Page 159 and 160: PRE-E~mRGENCE WEEDCONTROLTEST IN RE
Page 161 and 162: 161 Table 2. Tolerance of Beets and
Page 163 and 164: 163 Results generally were good wee
Page 165 and 166: USE OF GRANULAR CHl!H[CALAPPLICATOR
Page 167 and 168: u.s. #1 potatoes and weed control e
Page 169: 0' ~ Table 2. Pre-emergent weed con
Page 173 and 174: ~/Pe.nt>:r lITn. h.7(L T1o:oTl.,:r+
Page 175 and 176: In table 2 are presettted weed a*1'
Page 177 and 178: Since rec1root is only one of the I
Page 179 and 180: w.l.th 3 and 4 Ibs. ot Randox per a
Page 181 and 182: 181 CONTROLOF ANNUALWEEDSIN pOTATOE
Page 183 and 184: The following comments on the vario
Page 185 and 186: 185 S\:U!U!1fryand ConclWtlon No he
Page 187 and 188: 187 Table 2. Potato YIelds Followin
Page 189 and 190: Residue analysis of potatoes treate
Page 191 and 192: soil temperatures at the time the m
Page 193 and 194: ( ( ~able 2. Effect of Several Che~
Page 195 and 196: 195 PROBLEMSIN THEAPPLICATIONOF HER
Page 197 and 198: 197 scale tests on 2 cOlJllllercial
Page 199 and 200: l!!!! Experiment A factorial experi
Page 201 and 202: frOlll plot. at .horter i*nalt (~ t
Page 203 and 204: 6.50 Table 1. Effe,ct of p"e- an
Page 205 and 206: 205 EVALUATION0It' DACTHAL * HERBIC
Page 207 and 208: The 1959 and 1960 replicated field
Page 209 and 210: 209 TABLEII Average Weed Cont~l Exh
Page 211 and 212: Where the weed eompleJl;conststs of
Page 213 and 214: ...... 1.67, 213 Table 1. Effect of
Page 215 and 216: 215 Table 2. Bffect of pre-plant he
Page 217 and 218: .217 Pive pre-plant herbicide. were
Page 219 and 220: 219 Table 1. Effect of pre-p1anthel
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Table 2. tilat' of pre-plantbftb.tc
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l EVALUATIONOF THREEHERBICIDESONPnE
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TABLE2. TIll HIGHESTlATEOFHERBICIDE
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Because of the lush growth of quack
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Table 2. Effects of Herbicides on Q
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Table 3. Effects of Herbicides on A
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233 The inhibitory activity was ass
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non-polar solvents. Table 5 shows t
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237 Figure I Bioassay of cbrOlll4to
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239 Weed Control and Residual Effec
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Rototilling was done in June·' SO
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243 in the spring of 1961 preceedin
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WEEDCONTROL.AR
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Li£erature Cited 1. Chappell. W. E
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Tl'eatments ghing un.811~!8facto%'y
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Table 1. Designa t ion Am1l:)en .\
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Table 3. Percent Broadleat Weed Con
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,255 CONTROLOF ANNUALWlmDSIN swDT C
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of Casoron per acre was statistical
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~.-! _ 1.37 ~ Table 2. Sweet Corn Y
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Table 4. Peroent Control ot Ann.ual
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EVALUATIONOF FIVE _~p>I!:S FOR KILL
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265 STRAWBERRY HERBICIDEINVESTIGATI
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267 Table 2. Eftect Of'herbicidet~e
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'h ", 4. Tillam lOG at 5 lb/A a.i.
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Asparagus The results of weed contr
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273 TABLEII. ~1EED CONTROLANDYIELD
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~ C'l TABLE tv. lIEE» OON1T..OLAND
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WEEDCONTROLIN TRANSPLANT TOMATOES (
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279 ·QUACKGRASSCONTROL S.M. Raleig
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281 table II. The control of:'4oaek
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no cultivation during the growing s
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SummaryandConclu.1Qp' 1. A quackgra
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If or where farmer acceptance of a
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,~, ~ Tab1.e II. Chemical. Treatmen
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so11 per plot at each sampling date
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418' 293 Table III Main Eff,ects of
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Table V, }nt ...... e..• ,fa~, I;
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plots showed smaller decreases with
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FURTHEREVALUmONor HERBICIDESFal· W
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301 In the SUIIIIIlf)1' seeding, th
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The results were similar to those o
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In another experiment, loam soil wa
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apparently due to severe competitio
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ab1e 2. Average dry weight of corn
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311 The most strllt~Mrr~ct. ~fiIIJI
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313 RE9lfm'$~lfI)DI3CtlSSION '1.",
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315 LrrERATURECITED 1. Fertig, Stan
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.~ pattern following applications o
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Ratings at the time of'gJ;Vllst; al
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THERESPONSEOF NUTGRASS TO HERBIC~I)
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'\.......- TABLE2. Ratings of Nutgr
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All treatments produced si~1f~c~tly
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A 327 WEBDe
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. Eli'FECTSali' WEEDSON YIELD AND"G
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Pollen Maturity: ",l. ,. Broadleaf
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'--' The applicators were tested un
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335 Figure 1. The effeetof partic1e
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337 SRFeader 1 On this spreader onl
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Table 4. The effect of speed, p~~cl
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Table 1: Herbicidal treatments used
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·000 .000, I II ! WEEDCONTROLRATIN
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2.5000 CORNINJURY EXPRESSEDAS SQUAR
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347 1. 2. Danielson. l , ;4. L. Ef~
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',-- 34~ 3-(3 ..4-Dichlorophenyl)-1
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weed control with adequate safety t
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Untreated Table 2. Directed Post-E"
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.s .... __ Table 7. Pre-Emel'ae~eWe
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experiment is reported herE!. Trifl
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Results are given. in Table 4~J'Rot
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In Princeton fine sand, tritlupalin
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Included in the lima. bean test wer
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Table 1. The Effects ofS8veral form
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Table 3. The effects of several for
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369 Table 5. The effects of sev~ral
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• ~ : .• \ • ' -' ..,,:- ',-"
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Heights of barley were significantl
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Table 2. The effe,cts of s~\I'~ral
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Table 4. 377 The effects of aevel8.
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,:' A PROGRESSREPORTONCOMIo!ERCIAL
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4. Undesirable dead stem.,lio not r
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areas under service conditionsa~ va
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We ,prpbablyhave no speeie of g~owt
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control. At the end of the third ye
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initial defoliation was evident lat
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OBJECTIVE In 1958 an experiment was
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Replicates DlO 810 I 2.0 0.5 II 1.5
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DISCUSSION One Year After Applicati
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1. Button, E.F. Bndwrfg'h~';J .L. ,
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399 The treatment consisted of appl
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401 FIELD PROCEDURES Although. the
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403 In the light of these data it a
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405 ...·1!MLE I SAMPLECHARACTERIST
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407 , '.". '.·',',~'l~rL,i;'. "\"
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dltterent l"atespacaoreand"~"at thr
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411 RESULTS ireatmentettect was det
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, 413 ;. ' "1 ' "':j " • made wit
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( ( . Table 3. Effectiveness on Spe
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417 FENURQlt,A PROMISINGNEWTOOL FOR
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There are a number of reaso~ for un
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.n_ots, "'hhin a few months after:
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sater method ot tree-killing close
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Material ~izone is a,mixedf~g.. t w
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427 On November 16, 1961, at the en
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CHBMI-THINNINGWITH,AIrlINES IN THED
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These tests show once aaaiJithe nee
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Th:Ls ch!~ca1. tx'eatme:n1!_1IhClJ.
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: if.. . ' A Comparative Study of t
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'j 437 petioles, now elongated,f'or
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Helisoma, Menetus, fhYSa andValvata
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i s. The benth1c populat1Q~ W¥", O
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443 Eurasian. wa~lfoil a W8t.f~~ ap
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Empb4sis was on testing DOD-volatil
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447 . , , -. I':'V'est~a.ti
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FIELDOBSERVATIONS UPONESTUARINE ANI
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more than 2 feet. ExceptionalUdes s
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TABLE1. Responseof oysters t~ diffe
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In the'Dundee Creek series. ,one of
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workers. springer (1961) cite8& num
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OBSERVATIONSONTHE OCCURRENCE' ANDPE
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461 TABLE! Chemical Water QuaU1?::r
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TABLEIII Threshold Taste and Odor C
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(1.1-) Burttschell, R.H. , et al.,
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Code A - seeded June 29 B - seeded
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SUIIIIJ~, ~ Conclusions 5' 469 The
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III. Average turf scores l' of thre
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474 PIft'J'OTOXICBlFBQTS'QJe'CBRTAI
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476 MERIONBLUEGBASS• T!BATANDsgD
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478 In general. the treatments appl
Page 480 and 481:
4BJ days follow:lng the ohemical tr
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') ') ' :_B!.ue~s•. Fescue au:l~"
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:". ',J P~E~ C!',. O~.C~G~S 'F.~HEM
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Lima and ferd'1izer applications sh
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4es 1'.o~~1ty, ", .ewf!r''''rsenc.
Page 490 and 491:
} ) Table 1. Besu):ta.Qf 1961 pre-e
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492 corresponding plots on este.bl1
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494 ae.u!s,'I!IIDi,cua.:Lon leUllll
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496 D±!3pa,~n~ Resul te)I? .,l-ta,
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498 1 . 1 J. E. Gallagher and n. J.
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500 Da1;ejJ01 e~uations ~,a.;t'ollC
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502 TADLEIt Comparison of "severalc
Page 504 and 505:
504 TADLE3: Pre-oemergence and poet
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506 Table 1. Re8eeding Resulte:afit
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5"8 d1propalin ortrifluralin 'at ':
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510 aUlIPIl iri '-1: ' D" "" Diphen
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Fall ve. spriif ~nts .. 'Ibe",obl1.
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514 ~ Tab1e2. Cr&bgraS$'Contr01 in
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516 ,';1:".i'"'f'!r": :~,j i: .. r
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. ~lS residual cemtrol of crabgrssi
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520 - . \.. ; ."," ,
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5~2 'rab4t13.· ~gtnc. ·QGabtiol:o
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524 PRE.._RGENCE AMU' POsT-EHERGENC
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526 Table 1. 'l'a):lsra,. ContrO.k1
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528 Pre- andpost ..emergejljCec:rab
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530 Prior to each chemical applicat
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u 532 3) Those trea.t,mellts which
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Table I (Coot'd) 27. JSc.F,~iOe t$~
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536 EXPERIMENTS ONTHECHOOCALCOIm'l)
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~______ , 53S Table 1: Control of c
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54' In a similar po st-ell1~rgence
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542 da~hal and diphenatrile) at ear
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.. ";' -:' il; JT!.: .'\ i~'J" ; ~J
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541 Distr:tbution of radioacti~tl t
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549 •RESULTS The distribution of
Page 551 and 552:
GRAPHII: Comparison of the~.tl;'i~u
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"-...-.. J.4 The distribution of r~
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Vol. 16â1962 - NorthEastern Weed Science Society