Vol. 16â1962 - NorthEastern Weed Science Society
Vol. 16â1962 - NorthEastern Weed Science Society Vol. 16â1962 - NorthEastern Weed Science Society
1i! l~ , .' . . " ot!!tf~l!hem1.cals: Falone at 4 !bs. per acre ~ good earl)' control'. P'1 '., grasses and bro&!heated weeds 8;ta1lloca~ions. Pc)1,1~ heav .rains,~,t; 22-24, thill rat.e was not auf'ficient in 80IIIe cases. " . .- . . ". ~ Zytron at 7.; lbs. per aore looked pranisingtor crabgrass control earl¥ ' ' in the season but this rate was not suffioient later~' . GOodcontrol of 'crhh':' grass was obtained with 10 and 15 lb. rates in 1960~ . Tested at one looation, granular formUlations .~ Eptam and Stautter R-1607 applied at 4lbs. aotive pera,oJ;'lJ-&a'" 1Ocx1and vel'tSOod control respe9tlvely~ ot grasses when the granules werll cultivated int.o.tbe IOU soon (20m:l.nuteeJ-· atter application. Control was not as 100d where cultivation occurred1::letore rather than atter application. Fairly goOd control ot lambsquarter and'~ed was obtaine4. v., /.' a coU:~'W:/~=~ie~p~:t~~:rw~: rt~cnUtt~i: ~~a~th d potatoes at several location6j rates ot CDAA(Randcae)were also compare small plots at tllO locationa • . Better orabarus and be.i'n:Ja1'dgrass oontrol ... ··obt&:!nedwith 4 Jha. ODAA per ac;l'e than with t.he3 lbe. rat. in IIIC8toases, tol.1ow1ng leachins oo~Dne . ~ Auguat. .. . . Dalapon at ; lbe. active per acre gave cona:ft1erably better control ot crabgrass and bari:G'Vd grass than the 4 lb. rate. Falone at4 lba. per acre sav.-·sood control ot. sruMa and broacllAt,ed weeds early in the sea60n but th1a rate .wasnot ntftc1ent 11Mer conUtiollls' favorable for leaching. Eptam.aM. stautter
181 CONTROLOF ANNUALWEEDSIN pOTATOES M.F. Trevett, H.J. MUl'phy, and Robert Littlefield Y Introdulllt ion This paper is a report on the effectiveness of the herbicides listed in Table 1 on the control of annual broadleaf weeds and annual grasses in potatoes. Comparisons were made between herbicides applied singly, Block II,and between various combinations of herbicides, Block· I. Com1:lination treatments were applied to. dete~mine the likelihood of aomplementaryactibn that would either increa.se percent total weed oontrol or lengthen the period of effective weed oontrol. . Procedure Two blocks of Katahdin potatoes were planted in a sandy lQ8m soil in late May, 1961. Block I was planted 22 May, Block II was :planted 26 May. .Seed pieces were spaced 12 inches apart in ro~s 42 inches apart. "Planting" treatments were applied 24 May in Block I and 29 May in Block II, two and three days after planting. Emergence treatments were applied when about 5%of the plants had emerged: 12 June in Block I, ahd 13 June in Bloo,k II. Treatments were replicated six times in randomized blocks .of single row plots paired with untreated plots. Herbicides were applied with one pass of a small plot spraye.r at 40 pounds pressure and 50 gallons per acre volume. Potatoeswel'e hilled three times. The final hill was 24 inches wide at the base, 10 inches high, and 6 inches wide at the top. . The principal broadleatweeds were: Wild Rutabaga (Brassic, rapa Li), Red-root Pigweed (Amaranthus l'etrotlexusL.), Lambsquarters Pigweed (ChenopodiUll1 album t.), Ragwe,ed {Ambrosia artem1s11!gUj. L. h andsmal'tweed (POlY~OaUll! pensYlvanicum L.). The annua! gl'asses pl'esent we.re: Barny-ar Grass· (EOhlnochloa Cl'USgatp L.) and Foxtail (Seteria viridis L.). 'Weed counts and~ ra ngs were made- approximately twelve weeks atte.r treatments. 11 Associate Agronomists, and Technical Assistant, respectively, Agronomy Dep8r~ent, Maine Agl'icultural Experiment Station, Univel'sity of Maine, Orono, Maine.
- Page 129 and 130: Following emergence of the tomato s
- Page 131 and 132: indicates that several of the treat
- 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 and 170: 0' ~ Table 2. Pre-emergent weed con
- Page 171 and 172: Table 3. Post-hilling weed control
- 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: w.l.th 3 and 4 Ibs. ot Randox per a
- 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
- Page 221 and 222: Table 2. tilat' of pre-plantbftb.tc
- Page 223 and 224: l EVALUATIONOF THREEHERBICIDESONPnE
- Page 225 and 226: TABLE2. TIll HIGHESTlATEOFHERBICIDE
- Page 227 and 228: Because of the lush growth of quack
- Page 229 and 230: Table 2. Effects of Herbicides on Q
1i!<br />
l~<br />
, .' . . "<br />
ot!!tf~l!hem1.cals: Falone at 4 !bs. per acre ~ good earl)' control'. P'1 '.,<br />
grasses and bro&!heated weeds 8;ta1lloca~ions. Pc)1,1~ heav .rains,~,t;<br />
22-24, thill rat.e was not auf'ficient in 80IIIe cases. " . .-<br />
. . ". ~<br />
Zytron at 7.; lbs. per aore looked pranisingtor crabgrass control earl¥ ' '<br />
in the season but this rate was not suffioient later~' . GOodcontrol of 'crhh':'<br />
grass was obtained with 10 and 15 lb. rates in 1960~ .<br />
Tested at one looation, granular formUlations .~ Eptam and Stautter R-1607<br />
applied at 4lbs. aotive pera,oJ;'lJ-&a'" 1Ocx1and vel'tSOod control respe9tlvely~<br />
ot grasses when the granules werll cultivated int.o.tbe IOU soon (20m:l.nuteeJ-·<br />
atter application. Control was not as 100d where cultivation occurred1::letore<br />
rather than atter application. Fairly goOd control ot lambsquarter and'~ed<br />
was obtaine4. v., /.'<br />
a coU:~'W:/~=~ie~p~:t~~:rw~: rt~cnUtt~i: ~~a~th<br />
d<br />
potatoes at several location6j rates ot CDAA(Randcae)were also compare<br />
small plots at tllO locationa •<br />
. Better orabarus and be.i'n:Ja1'dgrass oontrol ... ··obt&:!nedwith 4 Jha. ODAA<br />
per ac;l'e than with t.he3 lbe. rat. in IIIC8toases, tol.1ow1ng leachins oo~Dne .<br />
~ Auguat. .. . .<br />
Dalapon at ; lbe. active per acre gave cona:ft1erably better control ot<br />
crabgrass and bari:G'Vd grass than the 4 lb. rate.<br />
Falone at4 lba. per acre sav.-·sood control ot. sruMa and broacllAt,ed<br />
weeds early in the sea60n but th1a rate .wasnot ntftc1ent 11Mer conUtiollls'<br />
favorable for leaching.<br />
Eptam.aM. stautter