Vol. 15—1961 - NorthEastern Weed Science Society

266.
In summary, the obstlrvations reported here suggest that both Dacthal and
,z.ytron mQ3', at least under some conditions, cause injury to red fescue and
bent. no injury to bluegrass was noted. In all instances on these plots
the treated areas recovered to about the same turf density as before, though
m.th a decrease ,in ,fe$eue~populat.ion:.'and. a,001BpeQ8ating increase 'in bentgrass
and otherp&remd:al"grs,sses,." ' ';f. ,i" '.: ',i, ! ,; ,
.. ,f ..
LiteratUre Cited; ,
f ' . .
1. Mower~ Jl. G~, and J.p.;, _cor_ .. .pre..emerg~~~eatlci post-emergence
c:tabgrase, c0tl'trol. s: Jlrqc. N.E. Weed ContrQ1CQD~. 14: ~7l-2T7 •. 1960.
,
Table l.Pre-eTn0rgcnce crab~ass control. Qvr.nel1·Nass~ Qo'un'ty Turf P1ota.
Results of fall treatments
Treatment
1 .. Lead ar~enat.e,
~ , ," , , . . .
2. c8J.~i~'arse~te sr~ ..
3. "Pax"', (propl"1etaz;'
. ',~6e~caJ.)
4. ChioJ;9an e 1~ etl.Ulsion '
5. " '1~ granular '
6~
, ~,
7. ItHalts"(propr1.ctary
" Chlordane'gran.)
", Rated
20/1:/l4. '
l2!/f/M,
""251/M
, '
,6011, a.1.j A,
,bOl a.i./A
60//:8..1,./ A
Average
:,cra'h,t:trass
plan~;'/plot
;,
control
Injury
ratings
4.0 ~; 1,0,0
8~3 ,10 ,0
3·7 67 1,1;,0
, 6,·3 76 1,0,0
13·1­ 51 0
4·3 85, 0
, 3·3 ' 88 0
8~ Dacthri1(DAC;..893} ~ w.p',l2r!f c..i./A
9. ZiYtron ,(bow1481) gran. 2f>{fa..1./It.
10. If " II,. ,; " ' 46#a.1./A
-~ ,
11. 20#a..i·IA
12. " "
II
~a.1./A
4.0' 86 2+,2 '
1.0 96- 2,1,1
0.0 too 3+}2+,,2
0·3 99 3,3,2
"
0.0 100 3+,3+,3+
13. Checks
LSD 05
LSDOI
Herbicide -app!.icat10n8:
Cra.bgraSs' cOtuits: ' 0Ct~
Tu~f injurY' rat1ngs: 1
2
'NOV.'13, 1959
29, 1960
Injury
- slight 3
- mo~rate' 4
29.5
rat1D8s: 'Mo¥'1, 1960"
- severe,
- comp1eteki11