Crop Protection Online > Pests - Weed biology<br> <sub>Agro-region: Denmark</sub> - Arabidopsis thaliana

Crop Protection Online

25.4 2024

Weed biology
_{Agro-region: Denmark}

Arabidopsis thaliana

Can be mistaken for

Capsella bursa-pastoris, which has larger and more oval dicotyledon leaves.

Characteristics

Cotyledons
Almost round with entire leaf margins. Stalked. Smooth surface. Length approx. 2 mm.

True leaves
The first true leaves are oval with entire leaf margins and stalked. Later, the leaves become more oblong, almost egg-shaped with slightly sinuate leaf margins. The surface on both types of leaves seems rough and is covered with star-shaped hairs. Length approx. 2-4 mm.

Mature plant
Thale Cress is a small plant with 10-25 cm high, erect stems. All leaves are arranged in rosettes. The siliques are line-shaped and spreading from the stem. The diameter of the flower is approx. 3 mm.

Seed
Egg-shaped with a comb-like rise at the side. Thousand grain weight is very low.

Biology

Propagation and dispersal
Only through seeds.

Habit
Winter annual.

Importance

The species is frequently found in autumn-sown crops, especially on sandy soils. Thale Cress is usually of no significance as a weed.

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Taxonomy

Cruciferae.

Names in different languages

Danish :	Gåsemad
German :	Ackerschmalwand
English :	Thale Cress
Latin :	Arabidopsis thaliana
Norwegian :	Vårskrinneblom
Swedish :	Backtrav

Seedling

Early stage

Flower

Mature plant

Seeds

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Weed biology Agro-region: Denmark