New options for managing thrips

1
New options for managing thrips in the upper
Southeast 1J. Bacheler, 1T. Spivey, 2A.
Herbert, 1D. Reisig, 1K. Edmisten, 2S. Malone
and 1D. Mott
1 North Carolina State Univ. 2 Virginia Tech
2
Insect Damage Rankings (Independent Crop
Consultants, 2012)
1. Stink bug 2. Thrips 3. Plant bug 4.
Bollworm 5. Cotton aphid

• 15-18/seed trt. 6.50 foliar spray
• 20-30 tech fee.

3
Thrips Management Breakthroughs?

• 1. Seed treatments
• Multiple insecticides (Poncho/VOTiVO/Aeris)
• Ultra-high rates
• (6-10x)
• 2. In-furrow sprays
• 3. Planting dates

4
Number thrips / 5 plants in UTC AMT, 2000 - 2011


No. thrips / 5 plants
VA
MS
TX
SC
AR
NC
LA
GA
Note VA and NC 25 thrips/seedling
5
Comparison of seed treatments for thrips
control, Rocky Mount and Plymouth, NC, 2012
3 weeks after plant
Check
185.0 a
57.3 b
Avicta Complete
Poncho/VOTiVO/Aeris
55.3 b
59.4 b
Acceleron N
8x rate imidacloprid
30.8 c
4 weeks after plant
Check
66.8 a
29.5 b
Avicta Complete
Poncho/VOTiVO/Aeris
17.0 bc
34.7 b
Acceleron N
8x rate imidacloprid
10.2 c
6
Impact of Avicta vs. Admire Pro on immature
thrips, Washington Co., NC, 2012
3 weeks after plant
4 wks.
75.0 a
83.0 a
Check
Check
15.3 b
26.0 b
Avicta
Avicta
Admire Pro (8.5 oz./Ac.)
Admire Pro (8.5 oz./Ac.)
31.0 b
31.8 b
5 wks.
27.8 a
Check
( immature thrips /5 plants)
34.5 a
Avicta
Admire Pro (8.5 oz./Ac.)
16.0 b
7
Impact of Avicta vs. Admire Pro on immature
thrips, Edgecombe Co., NC, 2012
3 weeks after plant
4 wks
294.8 a
50.5 a
Check
Check
99.3 b
33.0 b
Avicta
Avicta
Admire Pro (8.5 oz./Ac.)
Admire Pro (8.5 oz./Ac.)
113.3 b
16.8 b
5 wks.
31.3 a
Check
( immature thrips /5 plants)
20.5 b
Avicta
Admire Pro (8.5 oz./Ac.)
17.0 b
8
Impact of selected in-furrow treatments for
thrips control on seedling development, Suffolk,
VA, 2012
4 weeks after trt.
Check
4.50 a
Verimark 13.5 oz/A
3.44 b
Orthene 16 oz/A
2.31 c
Admire Pro 8.5 oz/A
1.25 d
Thrips injury rating 0none 5dead plants
9
Thrips injury rating with selected in-furrow
insecticides at 3.5 weeks after planting,
Suffolk, VA, 2012
4 weeks after trt.
Check
4.06 a
Counter 5 lbs/A
3.13 b
Thimet 5 lbs/A
3.19 b
Temik 5 lbs/A
2.31 c
Admire Pro 8.5 oz/A
2.06 c
2.13 c
Orthene 16 oz/A
Thrips injury rating 0none 5dead plants
10
Check
Avicta
Admire Pro Avicta
11
9 gpa 12 psi into middle of seed furrow
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Impact of Avicta vs. Avicta with Admire Pro on
immature thrips Wilson Co., NC, 2012
2 weeks after trt.
3 wks.
64.8 a
250.3 a
Check
Check
5.3 b
46.5 b
Avicta
Avicta
Avicta Admire Pro (9 oz./Ac.)
Avicta Admire Pro (9 oz./Ac.)
1.5 b
9.0 c
4 wks.
64.8 a
Check
( immature thrips /5 plants)
125.0 a
Avicta
Avicta Admire Pro (9 oz./Ac.)
32.0 b
13
Impact of Avicta vs. Avicta with Admire Pro on
dry plant weight, Wilson Co., NC, 2012
4 weeks after trt.
Check
1.76 c
Avicta
3.17 b
Avicta Admire Pro (9 oz./Ac.)
3.92 a
grams /5 plants
14
Comparison of Avicta to Avicta Admire Pro _at_ 31
days Wilson County, 2012
Avicta Admire Pro
Untreated
Avicta
15
Impact of selected surfactants plus Orthene
foliar on thrips injury to seedling cotton,
Suffolk, VA, 2012
4 weeks after planting
4.56 a
Check
2.44 b
Orthene 4 oz/A
Orthene 4oz/A Induce 0.25
2.50 b
Orthene 4oz/A Factor 0.25
2.69 b
Orthene 4oz/A Response 0.25
2.56 b
2.50 b
Orthene 4oz/A Agri-Dex 1
Orthene 4oz/A Dyne-Amic 0.625
2.75 b
Thrips injury rating 0none 5dead plants
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Preliminary Observations

• Seed treatments with multiple insecticides?
• Ultra-high seed treatment rates look promising
• Admire Pro in furrow with a seed treatment

• excellent thrips activity
• excellent persistence
• one and done potential