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Effect of environmental factors and chemical substances on the germination and emergence of the weed Tripleurospermum maritimum (L.) Sch. Bip


, : Effect of environmental factors and chemical substances on the germination and emergence of the weed Tripleurospermum maritimum (L.) Sch. Bip. Vedecke Prace Vyzkumnych Ustavu Rostlinne Vyroby Praha Ruzyne, 1970 (16): 11-19

In the laboratory, seeds (achenes) of T. maritimum did not germinate at all at 5 deg C and only a little at 10 deg C. Germination was best at 15-28 deg C and very low at 40 deg C. Light had no significant effect. Seeds collected in a dry and warm summer (1969) showed a much higher immediate germination than seeds collected in a moist summer (1970). Burial of the seed in the soil for 1 year under natural conditions did not significantly reduce germination.

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