---
description: "Pyroxasulfone: A Key Pre-Emergent Herbicide\r\nWhat is Pyroxasulfone?\r\nPyroxasulfone is a soil-applied pre-emergent herbicide widely used in row crops like corn, soybeans, and cotton. This herbicide is effective against a range of annual grasses and some broadleaf weeds, providing long-lasting, residual control.\r\nPyroxasulfone Mode of Action\r\nPyroxasulfone inhibits very-long-chain fatty"
title: Combining Pyroxasulfone + Flumioxazin - POMAIS Agriculture
image: https://www.pomais.com/wp-content/uploads/2024/09/85WDG-Pyroxasulfone85WDG-1-e1742434127184.jpg
---

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Combining Pyroxasulfone + Flumioxazin

Published On: November 11th, 2024726 words3.6 min read

# Combining Pyroxasulfone + Flumioxazin

[Table Of Contents](#2a35e34268eca8373)

## Pyroxasulfone: A Key Pre-Emergent Herbicide

### **What is Pyroxasulfone?**

[Pyroxasulfone](https://www.pomais.com/product/pyroxasulfone-40-sc-85-wg/) is a **soil-applied pre-emergent herbicide** widely used in row crops like **corn**, **soybeans**, and **cotton**. This herbicide is effective against a range of annual grasses and some broadleaf weeds, providing long-lasting, residual control.

### **Pyroxasulfone Mode of Action**

Pyroxasulfone inhibits **very-long-chain fatty acid (VLCFA) synthesis**, disrupting cell membrane formation in weed seedlings. This action prevents weed growth, making pyroxasulfone particularly effective in controlling **foxtail**, **barnyardgrass**, and **pigweed**. Its absorption through roots also ensures early-stage weed control, keeping fields clean during the critical growth phases of the crop.

[![Pyroxasulfone](https://www.pomais.com/wp-content/uploads/2024/09/85WDG-Pyroxasulfone85WDG-1-e1742434127184.webp "85WDG Pyroxasulfone85WDG 1 e1742434127184")](https://www.pomais.com/product/pyroxasulfone-40-sc-85-wg/)

### **Benefits of Using Pyroxasulfone**

- **Extended Residual Control**: Offers weeks of protection, minimizing the need for additional applications.
- **Resistance Management**: Pyroxasulfone provides an alternative mode of action, especially beneficial in managing glyphosate-resistant weed species.
- **Selective Action on Crops**: Effective in protecting crops like **corn**, **soybeans**, **wheat**, and **cotton** with minimal risk of crop damage.

Pyroxasulfone has become a favored solution in **North America** and **Australia** due to its effectiveness in areas where weed resistance is a significant concern.

---

## Flumioxazin: Quick-Knockdown Herbicide for Broadleaf Weeds

### **What is Flumioxazin?**

Flumioxazin is another powerful **pre-emergent and post-emergent herbicide** that is widely effective against **broadleaf weeds**. Known for its rapid action, flumioxazin is used in crops like **soybeans**, **peanuts**, and **vineyards** to manage weeds such as **waterhemp**, **pigweed**, and **lambsquarters**.

### **Flumioxazin Mode of Action**

Flumioxazin acts as a **PPO inhibitor** (protoporphyrinogen oxidase), disrupting chlorophyll synthesis and causing oxidative damage in weed cells. This results in quick desiccation of target weeds, making flumioxazin ideal for fast weed suppression. Its action both on the leaf surface and in the soil allows for flexibility in pre- and post-emergent applications.

### **Benefits of Using Flumioxazin**

- **Rapid Weed Knockdown**: Provides fast results, often within hours of application.
- **Versatile Use**: Can be applied both before and after weed emergence, adapting to diverse weed control needs.
- **Broad Spectrum**: Effective on a variety of broadleaf weeds, supporting clean fields throughout the growing season.

Flumioxazin’s effectiveness makes it a popular choice in regions where early-season weed control is essential for crop health.

---

## Combining Pyroxasulfone and Flumioxazin: Enhanced Weed Control

The combination of **pyroxasulfone + flumioxazin** offers a unique, dual-action approach for pre-emergent weed control. This mixture delivers the long-lasting residual benefits of pyroxasulfone along with the fast action of flumioxazin, making it a powerful solution for managing tough, resistant weeds.

### **Benefits of the Pyroxasulfone + Flumioxazin Combination**

1. **Dual Mode of Action**: By combining VLCFA inhibition (pyroxasulfone) with PPO inhibition (flumioxazin), this herbicide mixture effectively manages a wide range of weeds and reduces the risk of herbicide resistance.
2. **Broad-Spectrum Control**: This combination targets both **annual grasses** and **broadleaf weeds**, including species resistant to other herbicides, such as **waterhemp**, **barnyardgrass**, and **pigweed**.
3. **Extended Residual with Immediate Action**: Pyroxasulfone’s long residual effect maintains weed control for several weeks, while flumioxazin’s rapid knockdown provides immediate suppression, ensuring fields are clean as crops begin to establish.
4. **Reduced Application Frequency**: The combined residual and contact action of this mixture can reduce the need for multiple applications, saving time and costs for growers.

### **Target Crops and Application**

This combination is primarily used in **row crops** like **corn**, **soybeans**, **cotton**, and **peanuts**, as well as in **vineyards** and **orchards** where early-season weed control is critical. The pyroxasulfone + flumioxazin mix is usually applied **pre-emergence**, creating a barrier in the soil to prevent weed seedling establishment.

### **Formulations and Usage**

- **Formulations**: Common formulations include **suspension concentrates (SC)** and **water-dispersible granules (WDG)**, allowing for flexible application and compatibility with various spray equipment.
- **Application Timing**: Ideal for **pre-plant** or **pre-emergent applications**, as this combination prepares fields for planting with minimal weed competition.

---

## Market Demand and Usage Trends

The pyroxasulfone + flumioxazin combination is widely adopted in **North America**, **Australia**, and other regions where weed resistance poses a major challenge. Farmers appreciate this combination for its **long-lasting residual control**, cost-effectiveness, and ability to target resistant weed populations.

The **pyroxasulfone and flumioxazin** combination is a highly effective solution for pre-emergent weed control, providing comprehensive and durable action against a range of challenging weeds. By leveraging the unique strengths of each herbicide, this mixture not only ensures clean fields and higher crop yields but also supports sustainable weed management in agriculture.

For growers looking to optimize weed control in high-resistance regions, **pyroxasulfone + flumioxazin** offers a dual-mode herbicide that combines long-lasting and fast-acting benefits, ideal for protecting crops during critical early growth stages.

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