Find crop problems, pests, weeds and diseases

Aphids are sap-feeding insects that can reduce crop growth directly and spread damaging plant viruses if unmanaged.

Crops: winter wheat, spring barley, oilseed rape

Active: Mar, Apr, May, Jun, Jul, Aug, Sep, Oct

Slugs damage emerging seedlings and can thin crop populations rapidly in wet, mild conditions and high-residue fields.

Crops: winter wheat, winter barley, oilseed rape

Active: Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec

Blackgrass is a highly competitive grassweed in UK arable systems, with herbicide resistance a major management challenge.

Crops: winter wheat, winter barley, spring cereals

Active: Jan, Feb, Mar, Apr, May, Jun, Sep, Oct, Nov, Dec

Flea beetles can cause rapid feeding damage to young brassica crops, with cabbage stem flea beetle a major UK oilseed rape concern.

Crops: oilseed rape, brassica vegetables

Active: Mar, Apr, May, Aug, Sep, Oct, Nov

Italian ryegrass is a fast-growing grassweed that can be highly competitive and difficult to manage in cereal rotations.

Crops: winter wheat, winter barley, spring cereals

Active: Jan, Feb, Mar, Apr, May, Jun, Sep, Oct, Nov, Dec

Septoria tritici is a key wheat disease in the UK, driven by rainfall and canopy microclimate, and can cause major yield loss.

Crops: winter wheat, spring wheat

Active: Jan, Feb, Mar, Apr, May, Jun, Jul, Oct, Nov, Dec

Yellow rust (stripe rust) is a fast-spreading cereal disease that can escalate quickly under cool, humid conditions.

Crops: winter wheat, spring wheat, triticale

Active: Mar, Apr, May, Jun, Jul

Brown rust affects wheat and barley and often rises in warmer conditions, reducing green area and grain-fill performance.

Crops: winter wheat, spring wheat, barley

Active: May, Jun, Jul, Aug

Powdery mildew forms white powdery growth on leaves and stems, reducing crop efficiency where pressure is sustained.

Crops: winter wheat, spring barley, winter barley

Active: Mar, Apr, May, Jun, Jul