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Vol. 16—1962 - NorthEastern Weed Science Society

Vol. 16—1962 - NorthEastern Weed Science Society

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248<br />

...../<br />

CONTROLOFANNUALWEEDSIItc'cARRarSWITHSOLAN,ZYTRON,AMlBEN,<br />

. " DIPHENAM~~: ANDPROMETft~, . t • • ·'~.~!i~ .•<br />

.: . 'M.I~i'~l'e.,.ttari4"RObe1"t Lit'ti.:ti~id1:;' '.<br />

'J<br />

Hl.;< •<br />

..·:).C~>·,<br />

This papel' .i.a a... 1'e pol't ... Qn ...• t.he ette~.t1...y~ .. ' ... as.rv. ot the,he~.~g:~.dU<br />

'Uated in TaN.':llon:th.ci)n.~Ol ot annUd',J)i6~~eat' we~d' ~'l<br />

annual gl'assell .h1'Cazll'oth' . ..'<br />

I<br />

:.\:i'l~<br />

Pl'ocedure<br />

. ';"iJd<br />

"~ , ",'1<br />

Long Chantanay oal'l'otls ',tere planted 'in". loam so11 12 .rune, .<br />

1961, ,and wel'e eventually thtnned to tWl?inqhea. Tl'eatmenta._l'e.<br />

l'ep11oated .... A'·ta .. 111'a .tlandom1zedbio~~ b.t 'e1ngle-l'owp];Q,ia<br />

pail'ed with untl'eated plotll. Spl'aya weite app:u.ed with' one pa',',<br />

ot a small plot 8pl'.yel'at 40 pounda pl'es.sW'ean4 ,0 $dlon4.;~ .'<br />

aore volume. ,.i"blc1d ..awff'~ 'aJ)pl:led to 1i:l~f'rent lle1"if)aot, p~ota<br />

at 'plan t.ing(12 June) Ie t the "oCtt)'ledona.ry stage (26 Ju-ne),~n~"at<br />

the tl'ue letit stage (j July).·" '. ,. .<br />

The pl'~oipal bl'oadleat weeds wel'e: Wild Rutabaga (Bl'assl08<br />

a L.), L"ambsqual'tel'a (Chenopodium~ L.), and Spurl'Y<br />

el' ula a ven is L.). The annual gl'asae. p1'8aent wel'e: Foxtail<br />

Se 81' a v.), and Barnyal'd gl'aa8 (Eohinoohola 01'uafalll L.).<br />

<strong>Weed</strong> ooun 8 an 1"atings were 1I18deten weeka atte1" tl'eatmen •<br />

Results<br />

Hand weeded plots, and plots l'eoeiving 4 pounds ot Solan pel"<br />

aOl'e eithel' at the cotyledonal'y atage 01' at the tl'ue lear stage<br />

or cal'l'~ts, and 2 01"4 pounds or Pl'ometl'yne applied at planting,<br />

pl'oduced s18J1irlcantly highe1" rields ot cut-ott cal'l'ota than all<br />

othel' tl'eatments except 4 and 6 pounds or Amiben applledat<br />

planting, Table 2. Highest numel'ioal yielda wel'e pl'oduced in<br />

hand weeded plot., and in plot, l'eceiving 4 pounds or Solan at the<br />

cotyledonal'y ste! ..<br />

11 Associate agl'onomlst and technioal assiatant, Agl'onOMYDepa1"tment,<br />

Maine Agl'ioultural Experiment Station, Uhive1"sity ot<br />

Maine, 01'0no, Maine.

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