Vol. 16—1962 - NorthEastern Weed Science Society

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P~E~ C!',.
O~.C~G~S 'F.~HEMICAJ.Sl
.€I~. T'~ll~ J.t-~nd}. ~dd4Pat~2 .
Several chelillc* ~~e ~Pl"'d ~~ t~rf a~ea~s In:'~rder to· determine their
effectlYene.1 for pr. •• m~'rle4h..... bgr •• s control. • seda:of plots was
l~ out in 1960 and a s.con~I.~.1 in 1961.
')Procedure in 196'0: .:~ f:j 8" • ,., 'J
,~ .' ttll'Q "- q C1 .,"',~ u :';.:
! ;'; Seven tle--X1iencei cra1Jgrau c.ontrbl a.Kale wer~:tested in 1960
wifh,'th. followinl& ~.C$;tvet- {\)Pre.~r8.nc:k·eo~rol of ;:~bgrau _ .u;
(21. ~eir effeetlv.nel. under oetural precip{~atlbD and irri,-tlon; and (3)
T'hei~ effectivenesa at different fertility levels. •
>,:~p~ot8i~ere •• tabUlhed on fairway turf w~ict!; contained a ~avy infe.tation
of~~~r"'fln ..~.5~t J,he ,~~t.~~ch~et~. ~lf Cours,~ The per·
ma~tjgr.,s.. conliated mainly of blu.gras. (Poa praten.e). i~ermixed with
a ~itl,~ ~~t ~!b~ ~ro~1t:::Ja1~tr~.) ~d ,~.e,. (Fe.tuc~~ rubra) .
~ ;~ ;~' 'H,.UJc~ ~ th~ ha~lc~es,wer~1 c~r~ in five 'blocks. E.ch
bl:~fi.On.rf&d Cit 24. 4'xlO plot.. Treatm.ntl 'ware repUcat~ three time.
W't~~~~.c ~J blo~1 z: " 0 o ,::. :::~ i(~ r: ~
,.'-j i~.l ~ M )'"
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'--I The pKof the test ar .. 1 was 6.0. ','Fo,* blocks recei~d 50 pound.
ot:1-a1"'10-10 fertlliser per 1.000 Iq.ft. The fifth block rec!fved no lime
or;f.f4tr~;i1izer in either 1960 or 1961. f;,.
\. -t' " I " ,.j
;:'i;,g ~l~ ch"i~1..;'re-';p,He4bn April: l4;ia 'I'bth years at rates recom·
mettdtet;by tJ::hlf r~"rc:.Uve,JII8IUJ,f.c~re~. ,AU ,~ry",~tltdients
cl~~. co~~i .aiI . fOr .... of .'Prading;' Lt~uid' tri&tmantl
were mixed with
weI'. appU.d with
a ~paac,\;~ra~,f·,..;j, c: ,':0' ,'-i .:~.
,C t' '" :.' ..'
" -;'i ~Ga. ,~rbicidea which lbow.d promisina control of crabgrase in
1~60were igain ~tp~ad"o bf,O o..c.
~ ")Resulta in 1960:
_.~ :i:.
the. fi,ve b~'j)c~j in,.1961.
,=" B.c.ua~ Iof, the insipd.fleant d1ffe.qanc~ batw•• n the fertiUs.d
v"aua th ....,l\GU.£.,ttt1ael plal jed ~t",~ntJ1e ... t.1 pr.cipitation verlUI
ir.rigatior{~ptots. re.u1ts obt.ined from the 5 b10cka h.v. be.n combin.d .nd
ata 8hownln.)T.~. ~~ :~~ (;~; fj ~: '.~.; i< c'
•••• • ';~.f';;J._ ._~_. _•• _~._._ •••••••• _ •• _• • • ~_•• _.: •• • • • ••• _. ••• ._
1. Contr"~loQo .--1334 of ~ u..ivaHity, o(,;lIa... chuletts. College of
Agricu&t.r._ Exp.riment St.tlon. Amher.t. Ha•• schuI.tta.
+, Z:~~ './ {/
2. Assi.tant PiOfa.ior~ancf'In.i'r:uctor .'DepAl:t.t Of Agronomy. University of
Hauachue.tts. Amherat. H.... chu•• tt.." ,"