Crop Protection Online > Pests - Weed biology<br> <sub>Agro-region: Denmark</sub> - Thlaspi arvense L.
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21.9 2020 undefined

Weed biology
Agro-region: Denmark

Thlaspi arvense L. Previous page Next page

Go to identification key for weeds

Can be mistaken for

Euphorbia helioscopia L., which contains latex.

Characteristics

Cotyledons
Oval with entire leaf margins. Stalked. Smooth surface. Length approx. 5-10 mm.

True leaves
Oval to circular with slightly sinuate leaf margins. Stalked. Smooth surface. Length approx. 5-12 mm.

Mature plant
Field Penny-cress is a medium-sized plant (15-30 cm), known by its large coin-shaped fruits. The diameter of the flower is approx. 3-4 mm. Seed production: Up to approx. 900 seeds per plant.

Seed
Oval in circumference, but compressed from the side. The surface is furrowed in parallel, curving rows. Thousand grain weight approx. 1.8 g.

Biology

Propagation and dispersal
Only through seeds.

Habit
Summer and winter annual.

Importance

Field Penny-cress is frequently found in both autumn- and spring-sown crops throughout Denmark. A dense population of this species may lead to yield loss even in competitive crops such as cereals and Oil-seed Rape.

For treatment options, consult 'Herbicides Across'.
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Taxonomy

Cruciferae.

Names in different languages

Danish : Pengeurt
German : Ackerhellerkraut
English : Field Penny-cress
Latin : Thlaspi arvense L.
Norwegian : Pengeurt
Swedish : Penningört

Thlaspi arvense L.: Seedling
Seedling
Thlaspi arvense L.: Early stage
Early stage
Thlaspi arvense L.: Flower
Flower
Thlaspi arvense L.: Mature plant
Mature plant
Thlaspi arvense L.: Seeds
Seeds

 
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