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Seed Bank Longevity of Common Crupina (Crupina vulgaris) in Natural Populations

Published online by Cambridge University Press:  12 June 2017

David L. Zamora  and
Donald C. Thill
David L. Zamora
Affiliation:
Dep. Plant, Soil, Entomol, Sci., Univ., Idaho, Moscow, ID 83843
Donald C. Thill
Affiliation:
Dep. Plant, Soil, Entomol, Sci., Univ., Idaho, Moscow, ID 83843
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Abstract

Seedling emergence and seed bank longevity were followed in field experiments with natural populations of common crupina for 4 yr. Emergence the first fall after dissemination was 90 to 98% of all seedlings eventually to emerge from the seedbank. Seedling emergence over time did not differ between plots which either were treated with the potassium salt of picloram or were hand weeded. No viable seed remained in the soil 25 to 26 months after seed production stopped. Five locations in a common crupina infestation undergoing eradication were sampled for seed in the soil. No viable seeds were found during the first year of the eradication, and no intact seeds were found after 4 yr.

Keywords

Picloram, 4-amino-3,5,6-trichloro-2-pyridinecarboxylic acidcommon crupina, Crupina vulgaris Cass. #3 CJNVUTetrazolinum analysisseed burialeradicationpicloramCJNVU
Type
Research
Information
Weed Technology , Volume 3 , Issue 1 , March 1989 , pp. 166 - 169
Copyright
Copyright © 1989 by the Weed Science Society of America 

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References

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