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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 ,
Peter K. Fay ,
Timothy K. Chicoine  and
Celestine A. Lacey
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
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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.

Keywords

Picloram, 4-amino-3,5,6-trichloro-2-pyridinecarboxylic acid2,4-D, (2,4-dichlorophenoxy)acetic acidspotted knapweed, Centaurea maculosa Lam. #3 CENMAAcheneseedbankdormancyCENMA
Type
Weed Biology and Ecology
Information
Weed Science , Volume 41 , Issue 1 , March 1993 , pp. 57 - 61
Copyright
Copyright © 1993 by the Weed Science Society of America 

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References

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