north carolina corn insect pest 2015 update new corn offerings for insects stink bug management in...
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North Carolina Corn Insect Pest 2015 Update
New Corn Offerings for Insects
Stink Bug Management in Corn
How Do New Bt Products “Stack” Up?
Common mid- to late-season lep. pestOccasional mid-
to late-season lep. pests
Cutworm
Armyworms
Southern cornstalk borer
European corn borer
Corn earworm
Trade Name Bt proteinsCorn
EarwormFall
Armyworm
Agrisure 3011 Cry1Ab, mCry3Aa P F-G
Agrisure Viptera 3110 Vip3Aa20, Cry1Ab E E
Agrisure Viptera 3111 Vip3Aa20, Cry1Ab, mCry3Aa E E
Agrisure Viptera 3220 Vip3Aa20, Cry1Ab, Cry1F E E
Herculex I (HX1 or HR) Cry1F P G-VGb
Optimum Intrasect (YHR) Cry1F, Cry1Ab F-G VGb
Optimum Intrasect Xtra (YXR) Cry1F, Cry1Ab, Cry34Ab1/Cry35Ab1a
F-G VGb
Optimum Leptera (VYHR) Cry1F, Cry1Ab, Vip3Aa20 E E
YieldGard Corn Borer (YGCB) Cry1Ab P F-G
YieldGard VT Triple (VT3) Cry1Ab, Cry3Bb1a P F-G
Genuity VT Double PRO (GENVT2P) Cry1A.105, Cry2Ab2 G-VG E
Genuity VT Triple PRO (GENVT3P) Cry1A.105, Cry2Ab2, Cry3Bb1a G-VG E
POWERCORE Cry1A.105, Cry2Ab2, Cry1F VG E
SmartStax (SSX), Genuity SmartStax (GENSS)
Cry1A.105, Cry2Ab2, Cry1F, Cry3Bb1*, Cry34Ab1/Cry35Ab1a
VG E
atrait is effective for rootwormbrating will be poor in the Blacklands, where fall armyworm is resistant to Cry1F
Trade Name Bt proteinsCorn
EarwormFall
Armyworm
Agrisure 3011 Cry1Ab, mCry3Aa P F-G
Agrisure Viptera 3110 Vip3Aa20, Cry1Ab E E
Agrisure Viptera 3111 Vip3Aa20, Cry1Ab, mCry3Aa E E
Agrisure Viptera 3220 Vip3Aa20, Cry1Ab, Cry1F E E
Herculex I (HX1 or HR) Cry1F P G-VGb
Optimum Intrasect (YHR) Cry1F, Cry1Ab F-G VGb
Optimum Intrasect Xtra (YXR) Cry1F, Cry1Ab, Cry34Ab1/Cry35Ab1a
F-G VGb
Optimum Leptera (VYHR) Cry1F, Cry1Ab, Vip3Aa20 E E
YieldGard Corn Borer (YGCB) Cry1Ab P F-G
YieldGard VT Triple (VT3) Cry1Ab, Cry3Bb1a P F-G
Genuity VT Double PRO (GENVT2P) Cry1A.105, Cry2Ab2 G-VG E
Genuity VT Triple PRO (GENVT3P) Cry1A.105, Cry2Ab2, Cry3Bb1a G-VG E
POWERCORE Cry1A.105, Cry2Ab2, Cry1F VG E
SmartStax (SSX), Genuity SmartStax (GENSS)
Cry1A.105, Cry2Ab2, Cry1F, Cry3Bb1*, Cry34Ab1/Cry35Ab1a
VG E
atrait is effective for rootwormbrating will be poor in the Blacklands, where fall armyworm is resistant to Cry1F
Trade Name Bt proteinsCorn
EarwormFall
Armyworm
Agrisure 3011 Cry1Ab, mCry3Aa P F-G
Agrisure Viptera 3110 Vip3Aa20, Cry1Ab E E
Agrisure Viptera 3111 Vip3Aa20, Cry1Ab, mCry3Aa E E
Agrisure Viptera 3220 Vip3Aa20, Cry1Ab, Cry1F E E
Herculex I (HX1 or HR) Cry1F P G-VGb
Optimum Intrasect (YHR) Cry1F, Cry1Ab F-G VGb
Optimum Intrasect Xtra (YXR) Cry1F, Cry1Ab, Cry34Ab1/Cry35Ab1a
F-G VGb
Optimum Leptera (VYHR) Cry1F, Cry1Ab, Vip3Aa20 E E
YieldGard Corn Borer (YGCB) Cry1Ab P F-G
YieldGard VT Triple (VT3) Cry1Ab, Cry3Bb1a P F-G
Genuity VT Double PRO (GENVT2P) Cry1A.105, Cry2Ab2 G-VG E
Genuity VT Triple PRO (GENVT3P) Cry1A.105, Cry2Ab2, Cry3Bb1a G-VG E
POWERCORE Cry1A.105, Cry2Ab2, Cry1F VG E
SmartStax (SSX), Genuity SmartStax (GENSS)
Cry1A.105, Cry2Ab2, Cry1F, Cry3Bb1*, Cry34Ab1/Cry35Ab1a
VG E
atrait is effective for rootwormbrating will be poor in the Blacklands, where fall armyworm is resistant to Cry1F
Relationship between corn earworm feeding and yield
0
10
20
30
40
50
60
70
80
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100
Per
cent
Inj
ured
Pla
nts
Fall Armyworm- Washington Co. 2014
0
1
2
3
4
5
6
7
8
9
Inju
ry R
atin
g (0
-9)
a
b a
0
20
40
60
80
100
120
140
160
180
Yie
ld (
bu/A
)
aa
b
Trade Name Insecticide a.i./kernel BillbugWhite grub Wireworm
Poncho 250, Acceleron clothianidin 0.25 mg NL F G
Poncho 500, Acceleron with Poncho VOTiVO 500
clothianidin 0.50 mg F E VG
Poncho 1250, Acceleron with Poncho VOTiVO 1250, Poncho VOTiVO
clothianidin 1.25 mg G E E
Cruiser Maxx 250 thiamethoxam 0.25 mg NL F G
PPST 250 thiamethoxam 0.25 mg NL, F F G
Cruiser Maxx 500, Avicta Complete Corn
thiamethoxam 0.50 mg NL G VG
Cruiser Maxx 1250 thiamethoxam 1.25 mg G E E
PPST 250 plus Lumivia thiamethoxam + chlorantraniliprole
0.25 + 0.25 mg
G ? ?
Imida E-AG 5 FST, Senator 600, Imidacloprid 5, Attendant 600
imidacloprid 0.60 mg NL G G
Latitude imidacloprid 3.5 oz/CWT NL NL, F G
Concur imidacloprid 1.5 oz/ 42 lb NL F G
Kernel Guard Supreme, Kickstart VP permethrin 1.5 oz/ 42 lb NL NL, F ?
Trade Name Insecticide a.i./kernel BillbugWhite grub Wireworm
Poncho 250, Acceleron clothianidin 0.25 mg NL F F-G
Poncho 500, Acceleron with Poncho VOTiVO 500
clothianidin 0.50 mg F E G
Poncho 1250, Acceleron with Poncho VOTiVO 1250, Poncho VOTiVO
clothianidin 1.25 mg G E E
Cruiser Maxx 250 thiamethoxam 0.25 mg NL F F-G
PPST 250 thiamethoxam 0.25 mg NL, F F G
Cruiser Maxx 500, Avicta Complete Corn
thiamethoxam 0.50 mg NL G G
Cruiser Maxx 1250 thiamethoxam 1.25 mg G E E
PPST 250 plus Lumivia thiamethoxam + chlorantraniliprole
0.25 + 0.25 mg
G ? G?
Imida E-AG 5 FST, Senator 600, Imidacloprid 5, Attendant 600
imidacloprid 0.60 mg NL G G
Latitude imidacloprid 3.5 oz/CWT NL NL, F G
Concur imidacloprid 1.5 oz/ 42 lb NL F G
Kernel Guard Supreme, Kickstart VP permethrin 1.5 oz/ 42 lb NL NL, F ?
Trade Name Insecticide a.i.Bill-bug
White grub Wireworm
Poncho 250, Acceleron clothianidin 0.25 mg/kernel NL F F-G
Poncho 500, Acceleron with Poncho VOTiVO 500
clothianidin 0.50 mg/kernel F E G
Poncho 1250, Acceleron with Poncho VOTiVO 1250, Poncho VOTiVO
clothianidin 1.25 mg/kernel G E E
Cruiser Maxx 250 thiamethoxam 0.25 mg/kernel NL F F-G
PPST 250 thiamethoxam 0.25 mg/kernel NL, F F G
Cruiser Maxx 500, Avicta Complete Corn
thiamethoxam 0.50 mg/kernel NL G G
Cruiser Maxx 1250 thiamethoxam 1.25 mg/kernel G E E
PPST 250 plus Lumivia thiamethoxam + chlorantraniliprole
0.25 + 0.25 mg/kernel
G ? G?
Imida E-AG 5 FST, Senator 600, Imidacloprid 5, Attendant 600
imidacloprid 0.60 mg/kernel NL G G
Latitude imidacloprid 3.5 oz/CWT NL NL, F G
Concur imidacloprid 1.5 oz/ 42 lb NL F G
Kernel Guard Supreme, Kickstart VP permethrin 1.5 oz/ 42 lb NL NL, F ?
Billbug Injury- Hyde Co. 2014
Series10
0.01
0.02
0.03
0.04
0.05
0.06
0.07
Untreated Lumivia 250Lumivia 750 Lumivia 500Poncho 500 Cruiser 250Poncho 1250 Cruiser 250 + Lumivia
500Cruiser 250 + Lumivia 250
Inju
red
Pla
nts
per
Row
Foo
t
a
ab
abcabc
bc bc c c c
Can We Boost Efficacy with In-Furrow Insecticides?
Pasquotank Co. 2014
Can We Boost Efficacy with In-Furrow Insecticides?
Pasquotank Co. 2014
Can We Boost Efficacy with In-Furrow Insecticides? Hyde Co. 2014
Series10
0.02
0.04
0.06
0.08
0.1
0.12
0.14
UntreatedCapture 6.4 ozCounter 8 ozPoncho 500Poncho 500 + Counter 8 ozPoncho 1250Poncho 1250 + Counter 8 oz
Inju
red
Pla
nts
per
Row
Foo
t
a
abab
b b b b
What about Stink Bugs?
Stink Bug Population Dynamics
Wheat (hypothetical)
Aerial insecticide applications focused on fungicidal applications over tassling corn are ineffective
but they are likely too late to do any good anyway.
Stink bugs in wheat and corn, 3 hours post-marking, prior to wheat harvest
Stink bugs in corn, 2 days post-marking, prior to wheat harvest
Stink bugs in corn, 4 days post-marking, 2 days post-wheat harvest
Stink bugs in corn, 6 days post-marking, 4 days post-wheat harvest
Stink bugs in corn, 8 days post-marking, 6 days post-wheat harvest
Stink bugs in corn, 10 days post-marking, 8 days post-wheat harvest
Summing Up Corn Stink Bug Management
• Check adjacent wheat for stink bugs – Average stink bug density in 120 NC and VA fields
during 2011 was 1.9 in 20 sweeps at peak infestation
–Watch when 5 or more brown stink bugs in 20 sweeps
– Check status of weeds in adjoining ditches
0.24 stink bugs/m2 2.09 stink bugs/m2 0.02 stink bugs/m2
Summing Up Stink Bug Management in Corn
• Georgia thresholds– Prior to VT - 25% infested plants– R1 - 50% infested plants– R3 - 100% infested plants
• Spray ~7 days after adjacent wheat harvest