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Persistence of Spotted Knapweed (Centaurea maculosa) Seed in Soil

Published online by Cambridge University Press:  12 June 2017

Edward S. Davis
Affiliation:
Dep. Plant and Soil Sci., Montana State Univ., Bozeman, MT 59717
Peter K. Fay
Affiliation:
Dep. Plant and Soil Sci., Montana State Univ., Bozeman, MT 59717
Timothy K. Chicoine
Affiliation:
Dep. Plant and Soil Sci., Montana State Univ., Bozeman, MT 59717
Celestine A. Lacey
Affiliation:
Dep. Plant and Soil Sci., Montana State Univ., Bozeman, MT 59717

Abstract

Experiments were established in 1982 to study the loss of viability of spotted knapweed seeds (achenes) in soil. Greater than 50 and 25% of buried seeds remained viable but dormant after 5 and 8 yr at two locations, respectively. Decline in seed viability was also measured in two natural seedbanks. Although the soil seed reserve decreased by 95% over a 7-yr period, approximately 400 000 viable seeds per ha remained, indicating that spotted knapweed seeds will last for many years in soil.

Type
Weed Biology and Ecology
Copyright
Copyright © 1993 by the Weed Science Society of America 

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References

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