Vol. 51—1997 - NorthEastern Weed Science Society

68
TABLE la Herbicide treatments were applied May 3, 1996. Green cover ratings of turfgrass
were taken May 3, May 10, June 4, July 25, and October 10, 1996. A weed cover rating was
taken Sept mber 10, 1996. Turf canopy heights were taken at each rating period, however there
was no si ificant differences. Each value is the mean of three re lications.
Application r Weed over
Rate Ma 3 Ma 10 Jun 4 Jul 25 Oct 10 Se 10
(lbs/ac) ( nn n_ l) n____ (%)
0.25
0.5
0.75
4
8
0.375
0.75
8
0.375
0.032
98 100 97 98 99 1
89 83 76 79 96 11
99 82 48 78 92 20
99 77 22 35 78 50
98 58 0 0 0 33
99 99 94 98 98 1
99 98 95 98 99 0
95 99 90 98 99 1
99 97 89 98 98 1
6
7
22
1
13
Herbicide! lui 25
(--------
mowedch k 10 20
glyphosate 0.25 27 50
glyphosate 0.5 55 82
glyphosate 0.75 80 93
glyphosate 4 83 97
ethephon-' 8 10 11
trinexapac thyl 0.375 8 23
trinexapac thyl 0.75 10 27
ethephon 8
trinexapac thyl 0.375 13
imazame / 0.032 8
1 can Level (P) . 001
LSD ( =0 5) 12 4 7
1/ All treatm 18contained Polytex AlOOI drift control agent (Exacto Inc.) @ 0.25%(v/v).
2/Ethrel, 4 I ethephon/gal,Rhone-Poulenc,is not labeled for use on turf.
3/Also con "nedQwikWet357 (Exacto Inc.)@ 0.125%(v/v).