Vol. 54—2000 - NorthEastern Weed Science Society

Table I. Preemergence smooth crabgrass control, spurge, and woodsorrel control, 1999
0/0cover
Rate crabgrass spurge woodsorrel
Treatment'" lb ailacre 16 Aug
20 Aug 20 Aug
Team Pro 0.860 1.5+ 1.5 2 ab··
0.5 a
0.5 ab
Team Pro 0.86G 2.0 11 c
3.0 a
0.3 ab
Pendimethalin 0.860 1.5+ 1.5 8 bed
0.5 a
0.5 ab
Pendimethalin 0.860 2.0 II cd
2.5 a
l.l abc
DimensionO.IG 0.38 Oa
1.8 a
0.0 a
Barricade 0.22G 0.5 11 cd
1.5 a
1.5 bed
TADS 13172 2G 2.0 23 e
2.7 a
1.3 abc
TADS 13172 2G 3.0 13 d
0.8 a
3.5 e
TADS 131722G 4.0 9cd
2.0a
2.5 cde
TADS 13173 2G 2.0 15 d
1.3 a
2.8 de
TADS 13173 2G 3.0 10 cd
l.la
2.3 cde
TADS 13173 2G 4.0 6 abc
0.8 a
2.8 de
Ronstar 2G 2.0 15 d
0.8 a
2.1 cde
Ronstar 2G 4.0 9 cd
2.3 a
2.3 cde
Uotreated
76 f
• Treatments were applied on 13 April and sequentials were applied 27 May 1999.
.. Means in a column followed by the same letter are oot significantly different at p=Q.05 level
according to the least significant difference t test.
Table 2. Drive and Pendulum granular vs. apray furmularions for smooth crabgrassand
woodsorrel control, 1998.
Rate
%crabgrass
cover
No. woodsorrel
plants/25 ft'
Treatment· lb ailacre 3 Sept 17 Aug
Drive 75 DF + MSO" 0.50 20.5 ab... 15.3 a
Drive 75 DF + MSO 0.75 15.0 abc 7.3 bed
Drive 0.57G 0.50 12.8 bed 13.3 ab
Drive 0.57G 0.75 16.5 abc 12.0 ab
Pendulum 3.3EC 3.0 8.8 cde 1.0 de
Pendulum 3.3EC 1.5 + 1.5 2.3 de 0.8 de
Pendulum 20 3.0 0.3 e 0.3 e
Pendulum 2G 1.5 + 1.5 0.0 e 0.3 e
Dimension IEC 0.25 + 0.25 1.0 e 0.8 de
Untreated 24.0 a 11.5 abc
• Treatments were applied on 10 April, and sequentialswere applied 28 May 1998.
•• Drive 75DF was tank-mixed with methylated seed oil (1% v/v).
···Means in a column fullowed by the same letter are not significantly different at p=Q.05 level
according to the least significant difference t test.
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