Finding the best herbicide for maize and beans is essential for protecting crops and increasing yields. Weed competition in the early growth stages of maize and beans can drastically reduce productivity. Choosing the right herbicide ensures your crops grow strong, weed-free, and healthy.

Whether you’re a small-scale farmer or managing large acreage, using targeted herbicides is a cost-effective strategy. The right solution helps prevent regrowth and minimizes resistance buildup in weeds. In this guide, we highlight the most effective options used by farmers across Kenya and East Africa.

We’ll cover both selective and non-selective herbicides, safety tips, and application methods. These recommendations aim to maximize your harvest while preserving your soil and surrounding crops. Let’s explore the best herbicides for maize and beans today.

Top 5 Herbicides for Maize and Beans

1. Dual Gold 960 EC – Best Pre-emergence Herbicide

Dual Gold 960 EC is widely trusted by Kenyan farmers for pre-emergent weed control in maize and beans. It contains *S-metolachlor*, effective against annual grasses and some broadleaf weeds. Apply after planting but before crop emergence for best results.

This herbicide forms a chemical barrier at the soil surface, stopping weeds from germinating. It has a residual effect lasting several weeks, providing long-term protection. Ensure the soil is moist for better activation.

Ideal for minimum or no-till systems. Do not apply once the crop has emerged. Always follow label directions for dosage and safety.

2. Calliherb 480 SL – Post-emergence Broadleaf Control

Calliherb 480 SL contains *2,4-D amine*, targeting broadleaf weeds in maize fields. It is selective and will not harm maize when applied correctly. Apply during early weed growth stages for maximum effect.

It works systemically by entering the leaf and killing weeds from the inside. Avoid spraying during windy conditions to prevent drift to nearby crops. Great option for mixed weed infestations.

Not suitable for beans unless specified on the label. Use protective gear while spraying. Combine with clean water and follow instructions strictly.

3. Fusilade Forte – Grass Weed Killer for Beans

Fusilade Forte is ideal for controlling grass weeds in bean fields. It contains *fluazifop-P-butyl*, which is absorbed through leaves and kills weeds without harming beans. This selective herbicide works best on actively growing weeds.

Commonly used to control couch grass, wild oats, and goose grass. Beans are sensitive to competition from grasses, making this product a strong ally. Safe for legume crops but not for cereals like maize.

Rainfast within one hour. Best results are seen 7–10 days after spraying. Always calibrate your sprayer before application.

4. Glyphosate 480 SL – Non-Selective Herbicide for Land Prep

Glyphosate 480 SL is a systemic, non-selective herbicide used before planting. It effectively clears all vegetation, including stubborn perennial weeds. Best used 7–10 days before sowing maize or beans.

It kills weeds from the roots and prevents regrowth. Suitable for clearing land, fence lines, and pathways. Do not apply after crops have emerged.

Cost-effective and reliable for total vegetation control. Use with caution around crops. Add a surfactant for enhanced absorption.

5. Agil 100 EC – Grass Killer for Bean Fields

Agil 100 EC is a post-emergence herbicide ideal for controlling grass weeds in beans. It contains *propaquizafop*, effective against annual and perennial grasses. It is absorbed quickly and translocated to roots.

Visible effects occur in a few days, with grasses yellowing and drying. Use during the 3–5 leaf stage of weeds for best performance. Highly selective, won’t harm your bean crop.

Always read label instructions before mixing. Wear gloves and protective gear. Not intended for maize crops.

7 Tips for Choosing the Right Herbicide for Maize and Beans

• Check crop compatibility before applying any herbicide.
• Identify the type of weeds (grass vs. broadleaf) in your field.
• Use selective herbicides for post-emergence in growing crops.
• For land preparation, choose a non-selective systemic herbicide.
• Follow recommended dosage to avoid harming crops.
• Spray during calm weather to prevent drift.
• Always read labels and safety instructions thoroughly.

7 Frequently Asked Questions (FAQs)

1. What’s the best herbicide for maize? Pre-emergent herbicides like Dual Gold 960 EC are excellent for early-stage weed prevention.
2. Can I use glyphosate after planting? No, glyphosate is non-selective and will kill your crops if applied post-emergence.
3. What’s safe for beans? Fusilade Forte and Agil 100 EC are selective grass killers safe for beans.
4. When should I spray? Spray pre-emergent herbicides immediately after planting, and post-emergent ones during active weed growth.
5. Will herbicides harm the soil? When used properly, most herbicides degrade and won’t harm future crops.
6. Should I mix herbicides? Only mix products if specified on their labels to avoid chemical reactions.
7. Can I spray during rain? No, always apply during dry weather—check rainfastness on the label.

Conclusion

Managing weeds in maize and bean fields is easy with the right herbicide. From pre-emergent controls like Dual Gold to post-emergent solutions like Fusilade, each option serves a specific role. Choose products based on weed type, crop sensitivity, and timing.

Always read and follow label directions to protect your crops and maximize efficacy. Combining proper herbicide use with good farm practices results in higher yields. Invest in the right tools for a weed-free, productive season.