Vol. 16—1962 - NorthEastern Weed Science Society

Bxpedlllflnt II.
In 1960 a .~d axp.r1. .. nt;:~r.e.rte4;'~',~0IQIlH):l!.v.ral rate. of
S1.IIIazlneand the u.ually te~~,;,rat4t; .of ;DR1..... The plot. were lald out
In an orchard planted In 1958. Thl. orchard contalned flv. tr.e •• ach of 21
n.w varletie. all on Ba.t Malllni.W:t,roPUtoclt ••
The treatment. con.lsted of Dalapon at 10 pounde per 100 gallons of water
8Ild &UtaI1ne.t-.10, U, .20,25 and 30 pounde' a.1.:,pa':> JiOO-sallone.AppUoat1C1n.
"er' .. de. OIl' June 16, 1960 Id.tila 3-plloo c~.. d 'all' .pr.yer 00 G
are.,4 to, 5 feet LA d:Laeter around, .ach tre.. AboUili2o,.quart. of.pray wre
und, for 7 tr.... TbeDalapoa plDb were ,.1vea a .teCllld application em
Augu.t 18,1960 •
. The exper1JDeAtal layout cout.t.d of 6 .tr.at1Il .... ' upl1cated 7 tilll8••
Slo.1. tl'8e, plotl weX'.~ed. 1\'...... " were.pace4:1.0::«hat ,t;here wa.at
lea.t J 0118 \lntraated Ilraebetwe.1l1 &lraC.d treea'.' rhat.f.e. til each block'
there were 6 tr.ated trees and 8 to 10 guard tree.. ,-:"'"
on September 7, 1960 e.t1tlal •• iiware .Ue:of,t:h. effectivenes. of the
treatlDenti by rating the plots frcmO to 10.Or'epr ••• nting no control and 10
repre.ent1ng perf.ct control (no WI.deot gila" pre •• nt). Th. averale rating.
for the treatment. are glven In the table.
~'-Jq;." .r.: ,,!"",jB :'-L':: ~:t;J
RaUng o£weedCoDtrol ifollCW1.DI AppUcaUOD. rof. »a1apoll and; S1ala'£".~' :I.
)_.' ,~:~.d I ; ; {,:"j j fl.!"-:'1 ' .:, ; : i .: \:,::.i!
I Rate • .J Ap'KOX. .::::...;.; ";;'-(.i!f:-.,,;;;(;.;;RJt!DM ,~;l',-
Ir.!a.£!D.!n! l.!!/.l0.Q,Sa.ls..t__ l.&!eJ.a !e,Et,!1D,2e.!1.,_11,602__ Maz.ll1"19.!1
DalapoQ' ,1Q .s: ,:&-10 '; rqRWtb',o •• Ctill'
Dalapon plot., which had been, ..e,pl'qed .5 weeks b.fOldl' the,e.t1.lllatelJw.n-_cIa' •
.'.r'-, J J',.1. IH."v.:. " . • l:·)'U,.l:.~P
In theSpl'1nl: Qf 1961 lt WA' '.nned, IlbaIlAIlO8!Jl.; ratl'lJil; .the foUowi~,:~el'­
vatlODS were_de:~,l)S.Cllll8 ar."J'~ __ny broadlaaIJ .... de WIre; cC*tns~,
the ,'t'alaPQn plcaU ..,:. 2) MolIt oftiMU ... d. caD1ng:,_kll1ldlo. the,S1llaslne,plClb',
were quack gra .. , AaropYron repen.. 3), Gran c_na> tIlCo"the:SliIIaaia. .~
looked stunted and yellow. 4) S1IIIadne was not eff.otiv •• Ia1.~stclnq~ll~o_f.l,
Potent111a !p.S,- The effect1vene ••- ofSlmazlna ior- ... d control was stUl"
eVide~;'lJ;, IIIP1l*ib aft.ri~pjil.Cl.t-J.·ClO'~.upH1a11)'J':at "taoa .tJ! U,to 30 p~,~
per 100 gallem. of water,'j' "";>('>1,\, :cd:",. ""',;: ,'I'.V~~\·'t
: ;~l~.;:;.a,
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