Corn: Southern Corn Leaf Blight (Cochliobolus heterostrophus)


Pub 812: Field Crop Protection Guide > Chapter 1: Corn > Southern Corn Leaf Blight

Field Crop Protection Guide 2011-2012, Order 2011-2012 publication

Table of Contents

  1. Integrated Pest Management Options
  • azoxystrobin + propiconazole - Quilt
  • propiconazole - Tilt 250 E, Bumper 418 EC
  1. Related links...


Integrated Pest Management Options

 
Active ingredient azoxystrobin + propiconazole
Trade name Quilt
Rate per hectare (product) 0.75-1.0 L per ha
Rate per acre (product) 305-406 mL per ac
PHI* 30
Comments Ground and aerial application. Apply when disease first appears, followed by a second application 14 days after, if environmental conditions are favourable for disease development. Do not apply to field corn or field corn grown for seed after brown silk. Maximum 2 applications/yr.

 

 
Active ingredient propiconazole
Trade name Tilt 250 E
Rate per hectare (product) 250 - 500 mL per ha
Rate per acre (product) 100 - 200 mL per ac
PHI* 14
Comments Ground and aerial application. Apply when disease first appears. Can be tank mixed with Ripcord or Matador insecticide for insect control. Under severe disease pressure, a second application 14 days later may be necessary. Only in seed corn, under severe disease pressure can a third application be made 14 days later.

 

 
Active ingredient propiconazole
Trade name Bumper 418 EC
Rate per hectare (product) 150 - 300 mL per ha
Rate per acre (product) 60 - 121 mL per ac
PHI* 14
Comments Ground and aerial application. Apply when disease first appears. Can be tank mixed with Ripcord or Matador insecticide for insect control. Under severe disease pressure, a second application 14 days later may be necessary. Only in seed corn, under severe disease pressure can a third application be made 14 days later.

 


Related links...


For more information:
Toll Free: 1-877-424-1300
E-mail: ag.info.omafra@ontario.ca
Author: OMAFRA Staff
Creation Date: 2 May 2011
Last Reviewed: 10 May 2011