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Arthropod Management Tests 2014, Vol. 39
doi: 10.4182/amt.2014.F55
(F55)
SOYBEAN: Glycine max (L.) Merrill, ‘P 4510 RY’
EVALUATION OF JUSTICE AND BRIGADE FOR REDBANDED STINK BUG CONTROL IN SOYBEANS,
2013
S. A. Brown
LSU AgCenter
212-B Macon Ridge Rd
Winnsboro, LA 71295
Phone: (318) 435-2903
Fax: (318) 435-2902
Email: sbrown@agcenter.lsu.edu
D. L. Kerns
Email: dkerns@agcenter.lsu.edu
T. S. Williams
Email: twilliams@agcenter.lsu.edu
K. Emfinger
Email: kemfinger@agcenter.lsu.edu
N. Jones
Email: njones@agcenter.lsu.edu
Redbanded stink bug (RBSB): Piezodorus guildinii (Westwood)
This test was conducted at the Macon Ridge Research Station (MRRS) near Winnsboro, Louisiana in 2013. The field was
planted 2 May on 40 inch rows and was irrigated using polypipe furrow irrigation. The test was a RCB design with four
replications. Plots were 4 rows wide x 50 ft in length. Insecticides were applied using a John Deere 6000 series high
clearance sprayer calibrated to deliver 10 gpa at 3.5 mph with Tee Jet TX-8 hollow cone nozzles (2/row) to all four rows of
each plot on 23 Aug. Treatments were evaluated by sweeping the middle two rows of each plot 25 times with a standard 15
inch diameter sweep net counting adults and immature RBSBs. A pre-treatment evaluation was made on 23 Aug and posttreatment evaluations on 28 Aug and 2 Sep. Data were analyzed using an ANOVA and means were separated using an Fprotected LSD (P ≤ 0.05).
Before the insecticide applications on 23 Aug, there were no significant differences in total RBSB numbers among
treatments (Table 1). At this time, adult stink bugs were the predominate stage indicating early colonization. Prior to
application the RBSB populations was averaging 5.05 per 25 sweeps; exceeding our action threshold of 4 per 25 sweeps. At
5 DAT, we detected significant differences between treatments for immature RBSB; however, no significant differences
were detected for adult or total RBSBs between treatments (Table 1). All of the insecticide treatments had fewer immature
RBBS than the untreated check except Brigade applied alone. By 10 DAT, adult and total RBSBs were found to be
significantly different among treatments, while immature RBSBs did not significantly differ between treatments. Brigade
appeared to be less effective towards RBSBs at 10 DAT than Justice alone or Justice + Brigade. No phytotoxicity was
observed in this test. This research was supported by industry gifts of products and/or research funding.
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Arthropod Management Tests 2014, Vol. 39
doi: 10.4182/amt.2014.F55
Table 1.
Number of RBSB per 25 sweeps
23 Aug (pre-treatment)
Treatment/
formulation
Untreated check
Justice 1.8E
Justice 1.8E
+ Brigade 2E
+MSO
Justice 1.8E
+Brigade 2EC
+MSO
Justice 1.8E
+Brigade 2EC
+MSO
Brigade 2EC
Rate amt
product/acre
--5.0 fl-oz
5.0 fl-oz +
1.5 fl-oz +
1.0 pt
5.0 fl-oz +
3.0 fl-oz +
1.0 pt
5.0 fl-oz +
4.5 fl-oz +
1.0 pt
6.4 fl-oz
adult
immature total
29 Aug (5 DAT)
adult immature
total
3 Sep (10 DAT)
adult immature total
3.3a
4.5a
2.8a
0.3a
0.6a
0.3a
3.6a
5.1a
3.1a
0.9a
0.4a
0.4a
1.8a
0.5bc
0.3bc
2.9a
0.6a
0.5a
5.0a
0.0c
0.0c
2.0a
0.2a
0.0a
7.3a
0.2c
0.0c
5.3a
0.7a
6a
0.3a
0.0c
0.3a
0.4bc
0.0a
0.6bc
4.5a
0.1a
4.6a
0.1a
0.0c
0.1a
0.3c
0.0a
0.4c
6.8a
1.1a
7.9a
0.1a
1.0ab
0.6a
1.9b
0.3a
2.1b
Values in a column followed by the same letter are not different based on ANOVA and a protected LSD
(P ≤ 0.05).
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