How to control problem weed speedwell on chalky soils

Farmers Weekly

Herbicide-resistant speedwell is becoming an increasing problem on the chalky downlands of southern England and has prompted the revival of an old contact-acting weedkiller. The widespread use of sulfonylurea (SU) herbicides for broad-leaved weed control in cereals has led to growing resistance to them from speedwell, and especially ivy-leaved speedwell. This has led to the […]

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