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    White goosefoot [Chenopodium album]

    Annual, highly variable seed weed germinating in spring to late summer with a sturdy taproot growing to 1.5 metres tall. Found on all soils, prefers good tilth, nitrogen-rich, humus-rich loamy and sandy soils. Withdraws an especially large amount of nutrients from the soil.

    overview

    White goosefoot - image 1

    White goosefoot - image 1

    White goosefoot - image 2

    White goosefoot - image 3

    White goosefoot - image 4

    White goosefoot - image 5

    Pest Profile

    • About the pest

      Description

      Cotyledons are meaty, long-oval, stemmed, and approx. 15 mm long, the underside is red-violet, and the upper side silvery, floured (Picture 1). Leaves are first longitudinal to ovate, blue-green, floured, mostly with uneven teeth directed to the front (Picture 2).Later leaves are oval to lanceolate, highly irregular, longer than wide, long-stemmed, uppermost lanceolate, with smooth leaf margins(Picture 3). The Inflorescences is small, forming ears or cymes, surrounded by 5-part bracts (Picture 4). Each plant forms about 3,000-20,000 black seeds (Picture 5) which retain viable in the soil for a long time (10-15 years, in isolated cases also for more than 40 years). Germination starts from 5-7 °C, the optimum is between 15-20 °C.

      Symptoms & Diagnosis

      Occurence

      Beets, maize, potatoes, legumes, spring rape, spring cereals