Vegetable Production Guide

Corn
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Table 2 Corn Insect Control

This section was updated - 21 June 2017
Table 2 Corn Insect Control

Product

Rate

PHI*

Comments

Aphids

Assail 70WP

(acetamiprid)

Group 4
56 to 86 g/ha
(22 to 34 g/acre)

Apply in 200L/ha (80 L/acre) of water.
10
  • Repeat using a 21 day interval.
  • Maximum 2 applications per season.
  • Toxic to bees.
  • Do not detassel treated corn by hand.
  • Do not enter treated area for 10 days for hand harvesting, 12 hours for all other activities.

Sivanto Prime

(flupyradifurone)

 

Group 4D

500 to 750 mL/ha
(200 to 300 mL/acre)

Apply in at least 100 L/ha (40 L/acre) of water
7
  • Repeat at a 7 day interval.
  • Do not exceed a total of 2000 mL/ha (810 mL/acre) of product per season.
  • Toxic to bees.  Do not apply to flowering crops or weeds if bees are visiting the treatment area.
  • Do not enter treated areas for 12 hours.

Movento 240SC

(spirotetramat)

Group 23

220 to 365 mL/ha
(90 to 150 mL/acre)

Apply in 200 L/ha
(80 L/acre) of water 

7
  • Apply after pollen shed.
  • Repeat at 7 day intervals.
  • Maximum allowed per crop season: 1.1 mL/ha ( 445 mL/acre).
  • Use with one of the following adjuvants: non-ionic (eg. Agral 90 or Ag-Surf) or methylated seed oil (eg. Hasten).
  • Do not enter treated area for 12 hours.
  • Toxic to bees.  Do not apply during crop flowering period or when flowering weeds are present. 

Earworm

Lannate Toss-N-Go

(methomyl)

Group 1A
430 to 625 g/ha
(175 to 255 g/acre)

Apply in 240 to 900 L/ha (100 to 365 L/acre) of water
3
  • Direct spray on silks beginning when 25% of the ears show silk.
  • Repeat at 2 to 4 day intervals.
  • Do not make more than 3 applications per year.
  • Early morning or late evening sprays are recommended.

Sevin XLR

(carbaryl)

Group 1A
2.5 to 4.0 L/ha
(1.0 to 1.6 L/acre)

Apply in 220 to 275 L/ha (90 to 110 L/acre) of water
1
  • For insects attacking silks and ears apply at intervals of 2 to 4 days, starting when first silks appear and continue until silks dry.
  • For good coverage spray in 25 to 30 cm band over row.

Decis 5 EC

(deltamethrin)

Group 3
250 to 300 mL/ha
(100 to 120 mL/acre)

Apply in at least 240 L/ha (96 L/acre) of water
5
  • Do not feed or graze dairy cattle from treated fields.
  • Do not apply more than twice per year.
  • Apply only once on muck soils, before August 1.

Pounce EC

(permethrin)
275 to 375 mL/ha
(110 to 150 mL/acre)

Apply in 325 to 450 L/ha (130 to 180 L/acre) of water
1
  • Obtain good spray coverage of ears and silks.
  • For control in late planting apply before tassels show.
  • Very toxic to bees, avoid spraying when bees are foraging.

Perm-Up EC

(permethrin)

Group 3

Mako (Ripcord)

(cypermethrin)
 
Group 3
175 mL/ha
(70 mL/acre)
5
  • Maximum 3 applications per year.
  • May kill beneficials.
  • Ensure thorough coverage.
  • Apply in 300 to 500 L/ha (120 to 200 L/acre) of water.

Matador 120 EC

Silencer 120 EC

(Lambda-cyhalothrin)
 
Group 3
187 mL/ha
(75mL/acre)

Apply in 100 to 200 L/ha (40 to 80 L/acre) of water.
1
  • Treat when first feeding is seen on foliage.
  • Apply at 4 to 7 day intervals.
  • Will not prevent damage if insect has penetrated the ear.
  • Do not apply more than 3 times per year.
  • Very toxic to bees. Avoid spraying when bees are foraging.

Rimon

(novaluron)

Group 15
820 mL/ha
(331 mL/acre)

Apply in90 to 570 L/ha
(231 L/acre)

Hand harvest

9

Mech harvest
1

  • Apply when adult activity is 1st observed or when eggs begin to hatch.
  • Rimon targets larvae and eggs and will not control adult populations.
  • Repeat at 7 day intervals.
  • Do not apply more than 5 times per season.
  • Do not apply more than 4.1 L/ha (1.7 L/acre) per season.
  • Do not enter treated area for 9 days for hand harvesting or hand detassling.
  • Apply at a 7 day spray interval.

Coragen

(chlorantraniliprole)

Group 28
250 - 375 mL/ha
(100 - 150 mL/ac)

Apply in 100L/ha (40 L/acre) of water.
1
  • Thorough coverage is essential for optimum control.
  • Repeat at 3 day intervals as needed.
  • Do not make more than 4 applications per season.
  • Do not apply more than 1.125 L/ha
  • (455 mL/ac) per season.
  • Do not enter treated area for 12 hours.

Wireworms

Force 3.0G

(tefluthrin)

Group 3
37.5 g/100 m
3.75 kg/ha (1.5 kg/acre) at 100 cm row spacing
N/A
  • Apply directly in the seed furrow (2 to 5 cm deep) behind the planter shoe.
  • Consult label for precise instructions on calibration of your applicator.
  • Force applied for wireworm control will also control seed-corn maggots.

Slugs

Sluggo

(ferric phosphate)
25 to 50 kg/ha
(10 to 20 kg/acre)
0
  • Best applied in evenings to moist soil.
  • Do not place in piles.
  • ☺ Approved for use in organics.
*PHI = Pre-harvest interval.
= Very Toxic
BUFFERS – Refer to product label for buffer requirements. See also Pesticide Regulations and Safety section of this guide.
PESTICIDE GROUP DETAILS – see Pesticide Toxicity Table of this guide.

 

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