Vol. 15—1961 - NorthEastern Weed Science Society

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Table I. Post-Emergence Control of Crabgrass
.~........ in Lawn Turf w~ th Chemicals ..
~ - .~ - - - ,- - ....-::... - - - - Pounds- - - ~ - - - ....- - - Disco L-;:)rittoiil- - - - - - - - Control - - - ­
. ' Active' . Per No.. of ;, ----~------~- ". -~-------~-~
lJo. of Plants ~:>ercent
§.cb.!t,!. _C,2,n!r£,l:
lfa!e£i!l_, !tl&r!d!e!,!t A.£r,!':" _A!p!i£a!i~D! _J!!,ll.~ _J~ll. 1 :..J!!,lr~2;". _ !er ~
• < ~ +
SJ) 6623 . 3 Ib./gal. 2.0 1 0.3 1.7 " 0.0 41.7 0
S1i6623 " 3' Ib./gal. , ).0 2 0.2 0.7 ,0.1 48.7 0
81) 6623 +W.A. 3 Ib~1gal. 2.0 1 ' 0.1 0.5 0.0 ' 37.•7 3
StJ6623 + \'1.A. 3 Ib;/gal" 2.0 2 0.1 0.8 ~.4 34.0 12
51: 6623' . 3 Ib~/gal ..., 4.0 1 0.1 2.3 0.1 15.7 59
51' 6623 +J.A. 3 lb./gal. 4.0 .' 1 . 0.4 2.8 0.2 ' 30.0 22
st 6623 3 lb.1 gal. 6.0 1 1.1 2.7 0.3 '50.3 0
st 6623+W.A.: 3 ib~/gal~' 6.0 ,I ' 0.7 3.5 . l.O 32.0 17
SD 6623 "'; 3 Ib./gal. 8.0 1 1.7 3.7 1.1 56.1 0
D:ime't,+ 2 l6.0AHA'+ 3.43 3.4 AHA 3 0.4 0.7 ~.7 2.0 95
2, 4-J) .+ 0.7
,-2, 4-D
Artox 16..0 Al'JA 4.0 3 0.2 0.7 1.0 0.0 100
Weedone 12.3 ,.DMA 4.0 3 0.4 1.3 1.7 0.7 98
Weedone 12.3 DMA 6.0 3 1.1 2..2 2.8 " 0~3 .99
Olout: 2.5 J»IiA 2..8 ' 3 0.0 0.0 1.0 5.0 87
Clout: , 2.5DMA 5.6 3 t 0.0 0.0 0.2 ,0.3 99
Na nrsenite 4 Ib./gal. 0.7 3 1.0 1.7 1.1 42';'0 Cacott1~c 4cid 100.0 -0.5 3 1.1 3.7 2.0 61~O' o
PI-; %:,4-1). ,,10-.0 0.8 3 0.4 1.9 2.0 12.0 69
~t 134 25~ E.C. 0.5 3 0.0 0.1 0.3 . 28.0 28
Fl1 734 25% E.C. 1.0 . '3 0.2 0.7 1.0 33.3 14
Void' ' 3.15 'DLA. 4.1 3 0.0 0.,1 0.0 31.7 18
CheC?k
_
0..0 0.0 0.0 ~8.7
LSI, @ 5% ,;, 24.5
LSD @ 1%'" 32.8
Ibra~ororaiion-Index: -O-=-Nod:i"sc!)'loratIon,- '5 ;; Complete-dIscoloration: - - - - - ~ - - - - - - - ­­
'?ercent
contI 01 based on ccrepar-Lson \V'ith check.
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