Vol. 16—1962 - NorthEastern Weed Science Society

Table 1. Weed control: stand of plants and weight of onions under chemical
herbicide treatments.
AVERAGE PERPLOT
Active Rate '*'Weed Wt. of
Per Acre AppU.c4tion Days control Stand of OOione
Cheaical lb •• ·f. SeedinlZ ~11.10) Plants lb ••
'..
Nothing -- -- 9.4 61 1.8
Dacthal W-50R 8 Pre- .... rgence 1 4.0 112 9.4
It It
'. 16 1 2..3 104 11.9
It 24 . It
1 1.8 120 11.0
It
Exp R 8 1 9.5 37 1.5
It
" 16 1 11).0 51 1.4
" 24
It
1 9.6 45 1.5
Zytron 10
11
1 ~~3 83 5.S
" 15
It
1 5.3 55 4.8
Diphenamid 6
It
1 1.3 10 1.0
It
9
It
1 1.1 2 .1
U-4S13 2 "
1 3.5
I
67 3.9
" 3
It
1 3.3 58 ~.S
Atratone 2
It
1 4.4 27 :~8
CIPC 4 Emergence 14 4'.4 116 7.7
" 6 " 14 3.1 141 11.2
Randox T 6
It
14 5.4 81 4.6
It
9
It
14 5.9 71 4.8
I
KOCN· 12 " 14 7..0 68 2.3
It
18
It
14 7.•1 45 2.•1
Atratone 2 POlt-emergence 22 J.9 50 S~8
Prometryne 2 " 21 2.•0 8 .9
It
3
"
21 1.1 3 .3
It
4
It
21 1.3 6 . ~.s
lpadne 2 " 21 4.3 22 1.7
It
3
It
21 2.6 25 1.8
It
" 4 21 2.0 5 .9
It
Casoron
17 B.S 37 1.7
It
17 1~0 33 1.7
"
~
Least significant difference 5%
1%
*Weed Control 1-10: 1 Perfect WeedControl
10 Full WeedGrowth
1~3
1.7
31
40
2~3
3~0