Planteværn Online > Skadevoldere - Weed biology<br> <sub>Agro-region: Denmark</sub> - Black Nightshade

Crop Protection Online

28.11 2024

Weed biology
_{Agro-region: Denmark}

Black Nightshade

Can be mistaken for

Common Chickweed, which has smooth true leaves.

Characteristics

Cotyledons
Almost egg-shaped with entire leaf margins. Stalked. The surface is densely hairy on the leaf underside, whereas the leaf top side is almost smooth. Length approx. 6-14 mm.

True leaves
Broad egg-shaped with entire leaf margins. Stalked. Sparsely hairy surface. Length approx. 10-20 mm.

Mature plant
Black Nigthschade is a medium-sized plant with a 30-60 cm high, erect stem. The plant is especially known by its large, black berries. The diameter of the flower is approx. 5-10 mm. Seed production: Up to approx. 500 seeds per plant.

Seed
Compressed almond-shaped to oval with a quite sharp peripheral edge. The surface is netted and pitted in a weaving pattern. Thousand grain weight approx. 0.8 g.

Biology

Propagation and dispersal
Only through seeds.

Habit
Summer annual.

Importance

The species, which germinates late in the season, is frequently found in open and/or late-sown spring crops. In competitive crops the plant usually has no influence on yield. However, it can easily both be troublesome and cause losses in crops such as Beet and potato. Substantial amounts of Black Nigthschade in roughage may lead to poisoning in livestock.

For treatment options, consult 'Herbicides Across'.
For more options, consult 'Main Menu'.

Taxonomy

Solanaceae.

Names in different languages

Danish :	Natskygge, sort
German :	Schwarzer Nachtschatten
English :	Black Nightshade
Latin :	Solanum nigrum L.
Norwegian :	Svartsøtvier
Swedish :	Nattskatta

Seedling

Early stage

Flower

Mature plant

Seeds

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Weed biology Agro-region: Denmark