Persistence of Spotted Knapweed (Centaurea maculosa) Seed in Soil
- 1 March 1993
- journal article
- weed biology-and-ecology
- Published by Cambridge University Press (CUP) in Weed Science
- Vol. 41 (1) , 57-61
- https://doi.org/10.1017/s0043174500057581
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
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