A big, strong taproot! Combined with its perennial nature, the taproot makes dandelion a super villain.
A perennial weed with a large tap root, dandelions are sometimes present in early spring in time for pre-seed burnoff. The deep-lobed rosette stage is the most practical stage for control. If it gets past that stage, its familiar yellow flowers are easily recognizable. Dandelion is typically a bigger issue for those in dark brown to black soil zones.
HOW TO DEFEAT THIS VILLAIN
Canola – Roundup Ready® canola can help clean up a dandelion issue. Use Roundup Transorb® at 0.5 L to get season-long control.
Cereals – You have two possible approaches: 1. Balance the cost/recropping restrictions of a product like Prestige™; 2. Take a multi-year approach if budget, crop rotation and urgency are issues.
Peas & Lentils - In-crop options barely brown dandelion.
- Canola: Use a tankmix partner with Roundup Transorb (0.5 L) at pre-seed burn
- Cereals: Cirpreme™ XC.
- Pulses: Heat® before pulses.
As with Canada thistle, use your best one-two punch to tackle dandelion. You can throw high rates of herbicide at it in the spring, but you’ll often need to hit them pre-harvest to really take them out.
As much as we talk about burning back dandelion with a pre-seed herbicide application, the best time to get dandelions in-crop is pre-harvest. That’s because it’s the best time for the plant to move glyphosate down to the roots as it prepares to overwinter.
Always read and follow label directions.
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