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Broad-leaved weed control in spring cereals
Key Points
- High weed populations compete with the crop especially for water as soils become drier in the spirng
- Weeds can interfere with harvest
Introduction
Although spring crops do give the opportunity for stubble hygiene treatments over autumn and winter prior to spring establishment many key broad-leaved weeds have the ability to germinate and grow rapidly in the spring.
| Competitiveness of SPRING germinating weeds |
Threshold (plants/m2) for 5% yield reduction in winter wheat yield |
| Cleavers |
0 |
| Charlock, Mayweed, Vol. Oilseed rape and Poppy |
Up to 20 |
| Black bindweed, Chickweed, Fat Hen, Forget-me-not and Redshank |
20-49 |
| Cranesbill, Fools Parsley, Fumitory, Groundsel, Knotgrass, Red Dead Nettle, Scarlet Pimpernel, Sow Thistles, Speedwell |
50-99 |
| Field Pansy, Parsley Piert, Venus Looking glass |
Over 100 |
Source: Adapted from HGCA managed weeds in an arable rotation guide.
Learn more about Spitfire weed spectrum
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