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The Effects of Fresh Water Storage on the Germination of Certain Weed Seeds

Published online by Cambridge University Press:  12 June 2017

V. F. Bruns
V. F. Bruns*
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Irrigation Experiment Station, Prosser, Washington
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Abstract and summary

Some seeds of Cicuta douglasii (DC.) Coult. & Rose (western waterhemlock), Cuscuta planiflora Tenore (smallseed dodder), Cuscuta indecora Choisy (largeseed dodder), Linaria dalmatica Mill. (Dalmatian toadflax), Asclepias speciosa Torr. (showy milkweed), and Halogeton glomeratus (M. Bieb.) C. A. Mey (halogeton) (brown seeds) still germinated after 12 months of submergence at 12- and 48-inch depths in canal water. Black seeds of halogeton were not viable after 6 months. In another test, 35 percent of the seeds of Polygonum persicaria L. (ladysthumb) remained firm and 24 percent germinated after 5 years. Seeds of Cichorium intybus L. (chicory) and Swainsona salsula (Pall.) Taub. (swainsonpea) were not decomposed and devitalized in toto until after 5 years. No seeds of Avena fatua L. (wild oat), Bassia hyssopifolia (Pall.) Kuntze (fivehook bassia), and Rumex crispus L. (curly dock) sprouted after 6, 18, and 42 months, respectively. No seeds of Salsola kali L. var. tenuifolia Tausch (Russian thistle) and few seeds of Sonchus arvensis L. (perennial sowthistle) germinated after 3 months.

Type
Research Article
Information
Weeds , Volume 13 , Issue 1 , January 1965 , pp. 38 - 40
Copyright
Copyright © 1965 Weed Science Society of America 

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References

Literature Cited

1. Bruns, V. F. and Rasmussen, L. W. 1953. The effects of fresh water storage on the germination of certain weed seeds. I. White top, Russian knapweed, Canada thistle, morning glory, and poverty weed. Weeds 2:138–147.CrossRefGoogle Scholar
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