Vol. 51—1997 - NorthEastern Weed Science Society

TABLE 1:Average injury rating and number of stems, by species, for foliar herbicide treatments applied September 1, 1995. Injury was
rated August 16, 1996, on a scale of 1 to 5, where '1'=no injury, '2'=slight defoliation, '3'=moderate defoliation including terminal,
'4'=severe defoliation and epinasty, '5'=oomplete control of the tree. Treatment means followed by thesame letter withina given
column are not significantly different according to Fisher's LSD. A single LSD value is not reporteddue to unequal replication.
Averae:eTreelniur\'::R.aiiiie:_~~ ~_. - -. ~--~-
-- -_ _.__ .-----.",. •..._..,... -
Applieatioo
Average
Herbicide Rate Maple Cherty Populus Oak Total I
1'11: ~ j \. f: : 'f iC ,AA A •
VDalia)
\-------average mjuryraifug (num6efof stems)T~G:l'ouping-----)
untreated --- 1.0 (40) f 1.1 (37) f 1.0 (63) j 1.0 (28) h 1.0 (283) i
dicamba 1.50 2.7 (13) e 4.4 (10) be 4.2 (120) cdf 2.9 (22) ef 3.9 (166) f
dicamba 2.00 3.4 (53) cd 3.9 (39) d 3.8 (80) hi 1.7 (11) g 3.6 (188) g
dicamba 2.00 4.5 (6) ab 4.5 (80) c 3.8 (110) ghi 2.0 (2) fgh 4.1 (213) e
triclopyr 0.75
dicamba 1.50 4.9 (11) a 5.0 (48) a 4.2 (207) def 4.9 (7) ab 4.4 (309) cd
imazapyr 0.38
....
dicamba 2.00 5.0 (20) a 4.9 (44) a 4.6 (122) ab 4.8 (46) a 4.7 (235) a
"" ....
imazapyr 0.25
dicamba 1.50 3.8 (5) be 4.9 (90) a 4.1 (169) efg 3.0 (12) ef 4.3 (325) de
glyphosate 1.50
dicamba 2.00 4.3 (22) b 5.0 (40) a 4.4 (111) bed 2.2 (9) fg 4.5 (259) be
glyphosate 1.50
glyphosate 2.00 3.0 (8) de 5.0 (42) a 4.7 (160) a 3.5 (6) de 4.6 (240) ab
fosamine 3.00 5.0 (6) a 4.8 (42) ab 4.5 (78) abe 4.1 (22) bed 4.6 (149) abc
imazapyr 0.15
fosamine 3.00 5.0 (6) a 5.0 (37) a 4.0 (182) efgh 5.0 (14) a 4.3 (247) de
imazapyr 0.15
Thinvert
dicamba 2.00 3.3 (8) cde 3.1 (19) e 3.6 (94) i 2.2 (9) fg 3.4 (135) h
Thinvert
dicamba 1.5 4.9 (59) a 4.9 (35) a 4.4 (34) abcdf 4.5 (30) ac 4.7 (158) a
imazap-yr 0.38
Thinvert