Common Herbicides, Fungicides, and Insecticides for Conventional Corn

FBN Network

Jun 02, 2025

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Maximizing yield and profitability hinges on a precise, effective crop protection strategy. While genetically modified traits offer built-in defenses, conventional corn growers rely on well-timed applications of herbicides, fungicides, and insecticides to safeguard their investment. 

This guide delves into key product categories, offering specific examples and insights for a robust conventional corn program.

Strategic Herbicide Application for Weed Control

Effective weed management in conventional corn demands a multi-pronged approach, integrating burndown, pre-emergent, and post-emergent applications. Glyphosate and glufosinate are typically excluded from post-emergent applications in conventional corn, but many other chemistries remain highly effective.

Pre-Emergent and Burndown:

Post-Emergent:

Proactive Fungicide Programs for Disease Protection

Fungal diseases can significantly impact corn yield. Proactive fungicide applications, particularly at critical growth stages, are crucial for disease suppression and yield protection.

  • Products such as GCS Azoxy 2SC are strobilurin fungicides offering broad-spectrum control against diseases like gray leaf spot and northern corn leaf blight.

  • Willowood Propicon 3.6EC is a triazole fungicide effective against various leaf diseases.

  • Premixes like GCS Azoxyprop combine two modes of action, providing robust protection and resistance management.

  • Ellora Fungicide offers a powerful combination for broad-spectrum fungal control.

  • Trivapro® Fungicide (Azoxystrobin, Benzovindiflupyr, Propiconazole) represents a triple mode of action for comprehensive disease defense.

Insecticide Strategies for Pest Management

While conventional corn lacks inherent insect resistance traits, targeted insecticide applications can prevent economic damage from common corn pests. Scouting is paramount to determine thresholds and application timing.

  • Willowood Lambda-Cy 1EC is a synthetic pyrethroid effective against a broad range of insect pests, including corn earworm and fall armyworm.

  • Willowood Imidacloprid 4SC is a neonicotinoid insecticide often used as a seed treatment or foliar application for early-season insect control, including corn rootworm.

  • Products like Bifenthrin 2EC Value Pick are broad-spectrum insecticides and miticides that can be effective against various foliar pests.

At FBN, we know optimal corn yield means precise crop protection. That's why we connect you directly to the herbicides, fungicides, and insecticides you need on FBN.com. Our platform offers transparent pricing, unbiased information, and seamless direct-to-farm delivery, empowering you to make smart decisions that maximize your field's potential and your bottom line. 


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FBN Network

Jun 02, 2025

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