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Corn: European Corn Borer
(ECB) (Ostrinia nubilalis)
Pub 812: Field Crop Protection
Guide > Chapter
1: Corn > European Corn Borer (ECB)
Field Crop Protection Guide 2011-2012, Order
2011-2012 publication
Table of Contents
- Description
- Integrated Pest Management Options
- Bt corn - Agrisure 3000GT, Agrisure CB, Agrisure Viptera 3110,
Agrisure Viptera 3111, Genuity SmartStax, Genuity VT Double Pro,
Genuity VT Triple Pro, Herculex l, Herculex XTRA, SmartStax, YieldGard
CB, YieldGard Plus, YieldGard VT Triple
- Foliar Treatment
- chlorantraniliprole - Coragen
- deltamethrin - Decis 5 EC
- cypermethrin - Ripcord 400 EC
- cyhalothrin-lambda - Matador 120 E, Silencer 120 EC
- Bacillus thuringiensis - Bioprotec CAF, Dipel
2X DF
- carbaryl - Sevin XLR Plus
- Related links...
Description
Egg masses are flat, creamy white and layered over each other,
making the egg mass appear similar to fish scales. Mature larvae
are creamy white to pale grey with 2 small spots per abdominal segment,
approximately 2.5 cm in length and have a black head. Adults are
light-brown moths approximately 2 cm long with dark wavy lines running
across each forewing. Male moths are darker and smaller than females.
Image 1. European corn borer eggmass. Each eggmass
can have 15-40 eggs, which are layered like fish scales.
Image 2. European corn borer larvae are cream to pink with black
heads and two black spots per abdominal segment. Stalk rots can
be carried in by the larvae.
Image 3. Adult European corn borer moths. Female
(left) is larger and lighter in colour than the male (right).
Integrated Pest Management Options
To manage potential corn borer resistance, plant the appropriate
refuge for the Bt corn trait used and follow all insect resistance
management strategies mandated by the Canadian Food Inspection Agency.
For more information regarding Bt corn and/or refuge options, see
the Canadian Corn Pest Coalition website, found at
www.cornpest.ca.
| Active ingredient |
Bt corn |
| Trade name |
Agrisure 3000GT, Agrisure CB, Agrisure Viptera 3110, Agrisure
Viptera 3111, Genuity SmartStax, Genuity VT Double Pro, Genuity
VT Triple Pro, Herculex l, Herculex XTRA, SmartStax, YieldGard
CB, YieldGard Plus, YieldGard VT Triple |
| Rate per hectare (product) |
See Table 9-4, Transgenic Crops Expressing Insecticidal
or Fungicidal Traits, on page 119, for Bt corn options. |
| Comments |
Insecticides have generally not provided economic control
of ECB in field corn. Bt corn provides much better control.
Use corn hybrids that express the Bt toxin in the ear as well
as the stalk to help avoid stalk and ear rot. Keep careful and
accurate records as to where Bt and non-Bt hybrids are planted. |
Foliar Treatment
See OMAFRA Publication 811, Agronomy Guide for Field Crops,
to calculate economic thresholds.
| Active ingredient |
chlorantraniliprole |
| Trade name |
Coragen |
| Rate per hectare (product) |
250-375 mL per ha |
| Rate per acre (product) |
101-151 mL per ac |
| PHI* |
14 (field corn) 1 (seed corn) |
| Comments |
Apply to foliage when rain is not expected in the next 24
hr. Time application to coincide with peak egg hatch. Use a
minimum of 100 L/ha of water. Maximum 4 applications/yr. 12-hr
re-entry period. |
| Active ingredient |
deltamethrin |
| Trade name |
Decis 5 EC |
| Rate per hectare (product) |
250-300 mL per ha |
| Rate per acre (product) |
100-120 mL per ac |
| PHI* |
1 |
| Comments |
Ground application only. Apply when egg masses
begin to hatch but no later than when 1st pinhole feeding occurs
on foliage. For 2nd brood in late planting, apply before tassels
show. Repeat 5-8 day intervals. Use at least 240 L water/ha.
Maximum 3 applications/yr. Do not feed silage or stubble to
dairy cattle. 12-hr re-entry period. |
| Active ingredient |
cypermethrin |
| Trade name |
Ripcord 400 EC |
| Rate per hectare (product) |
175 mL per ha |
| Rate per acre (product) |
70 mL per ac |
| PHI* |
5 |
| Comments |
Apply when egg masses begin to hatc but not later than when
1st feeding occurs on foliage. For 2nd brood in late planting,
apply before tassels show. Use a minimum of 300-500 L water/ha
for ground application and 11-22 L/ha for aerial application.
Maximum 3 applications/yr. Do not apply more than 2 applications
by air. Re-entry period when foliage dries. |
| Active ingredient |
cyhalothrin-lambda |
| Trade name |
Matador 120 E |
| Rate per hectare (product) |
187 mL per ha |
| Rate per acre (product) |
76 mL per ac |
| PHI* |
14 (silage) 21 (field & seed) |
| Comments |
Ground and aerial application. For best results, apply in
the early morning, before temperatures rise, or during the evening,
past the heat of the day. Use 100-200 L water/ha for ground
application, 10-40 L water/ha for aerial application. Spray
no later than 10 days after egg hatch. Maximum 3 applications/yr.
Do not apply more than 2 applications of 83 mL/ha by air. 24-hr
re-entry period. |
| Active ingredient |
cyhalothrin-lambda |
| Trade name |
Silencer 120 EC |
| Rate per hectare (product) |
83-187 mL per ha |
| Rate per acre (product) |
34-76 mL per ac |
| PHI* |
14 (silage) 21 (field & seed) |
| Comments |
Ground and aerial application. For best results, apply in
the early morning, before temperatures rise, or during the evening,
past the heat of the day. Use 100-200 L water/ha for ground
application, 10-40 L water/ha for aerial application. Spray
no later than 10 days after egg hatch. Maximum 3 applications/yr.
Do not apply more than 2 applications of 83 mL/ha by air. 24-hr
re-entry period. |
| Active ingredient |
Bacillus thuringiensis |
| Trade name |
Bioprotec CAF |
| Rate per hectare (product) |
2.8-4.0 L per ha |
| Rate per acre (product) |
1.1-1.6 L per ac |
| PHI* |
1 |
| Comments |
Ground application only. This product is
a good option for organically grown corn. Apply at first signs
of infestation when larvae are small. Repeat applications, according
to economic threshold, as necessary to maintain control. Use
a minimum of 300 L/ha water. This product is more effective
when no rain occurs within 24-48 hr after application. Maximum
6 applications/yr. |
| Active ingredient |
Bacillus thuringiensis |
| Trade name |
Dipel 2X DF |
| Rate per hectare (product) |
0.56-1.12 kg per ha |
| Rate per acre (product) |
0.22-0.45 kg per ac |
| PHI* |
1 |
| Comments |
Ground application only. This product is
a good option for organically grown corn. Apply at first signs
of infestation when larvae are small. Repeat applications, according
to economic threshold, as necessary to maintain control. Use
a minimum of 300 L/ha water. This product is more effective
when no rain occurs within 24-48 hr after application. Maximum
6 applications/yr. |
| Active ingredient |
carbaryl |
| Trade name |
Sevin XLR Plus |
| Rate per hectare (product) |
2.5-4.0 L per ha |
| Rate per acre (product) |
1.0-1.6 L per ac |
| PHI* |
1 |
| Comments |
For larvae in whorls and foliage, treat entire plant. Repeat
as necessary. For silks and ears, apply in 2-4 day intervals
when silks first appear. Follow label precautions applying to
honeybees. |
Related links...
For more information:
Toll Free: 1-877-424-1300
Local: (519) 826-4047
E-mail: ag.info.omafra@ontario.ca
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