
Crow's foot grass (Eleusine indica) is a plant widely distributed in tropical, subtropical and temperate regions, known for its competitiveness in various crops and its increasing resistance to herbicides.
Common names
- Crow's Foot Grass
- Goosegrass, yard-grass, wiregrass, crowfootgrass (English)
- Eleusine
Infested crops
Goosegrass is a growing problem in cotton, soybean and corn crops.
These crops are often affected due to plant resistance to the most commonly used herbicides.
Biology
- Classification: monocotyledonous plant, of the Poaceae family.
- Origin: native to Africa and Asia, with a worldwide presence in tropical and subtropical regions.
- Life cycle: annual, reproduction by seeds (average of 40 thousand seeds per plant).
- Height: between 30 and 70 cm.
- Characteristics: C4 type photosynthesis, caespitose and erect or semi-prostrate plant.
Development conditions
- Soil: undemanding, tolerates compacted soils and varied pH.
- Climate: performs well in hot climates and is often found in tropical and subtropical areas.
- Competitiveness: stands out in poor soils, being one of the main competitors in large-scale crops.
Control
The increasing resistance of goosegrass to ACCase-inhibiting herbicides and, in some cases, glyphosate, requires integrated management approaches:
- Prevention and monitoring: use of monitoring practices to identify resistant biotypes. And implementation of crop rotation and alternation of herbicides with different mechanisms of action.
- Pre-emergent herbicides: include active ingredients such as trifluralin, clomazone and s-metolachlor, which act preventively.
- Post-emergent herbicides: glyphosate, still effective in many cases, can be combined with other herbicides to improve control.
- Cultural practices: sowing in infestation-free areas. And sequential desiccation to reduce the emergence of new weeds.
- Integrated management: use of manual or mechanical weeding in cases of herbicide failure. And adoption of long-term strategies to avoid the selection of resistant biotypes.
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