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Germination, Growth, Development, and Control of Galinsoga

Published online by Cambridge University Press:  12 June 2017

J. A. Ivany  and
R. D. Sweet
J. A. Ivany
Affiliation:
Canada Dep. of Agr., Res. Sta., P. O. Box 1210, Charlottetown, P. E. I., Canada
R. D. Sweet
Affiliation:
Cornell Univ., Ithaca, N. Y., 14850
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Abstract

Hairy galinsoga [Galinsoga ciliata (Raf.) Blake] and smallflower galinsoga [G. parviflora Cav.] are widespread weeds in New York State. Freshly harvested achenes (seed) are not dormant and germinate in the field from early May until frost. Rate of germination but not final total percentage was stimulated by alternating temperature, with the fastest rate being at 30 C day and 20 C night and with a 16-hr photoperiod and 11,000 lux of light. Some seed in each seed-lot required light for germination. Both species were day-neutral with respect to flowering. Smallflower galinsoga produced its first flower after node seven and hairy galinsoga after node six on the main axis 6 to 8 weeks after germination. Decreasing light intensity 83% decreased fresh weight.

Type
Research Article
Information
Weed Science , Volume 21 , Issue 1 , January 1973 , pp. 41 - 45
Copyright
Copyright © 1973 Weed Science Society of America 

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References

Literature Cited

1. Ashley, R. A. 1971. Weed control in marigolds, pansies and petunias. Proc. Northeast. Weed Sci. Soc. 25:233–239.Google Scholar
2. Braden, D. A. and Cialone, J. A. 1970. Weed control in lettuce and endive. Proc. Northeast. Weed Cont. Conf. 24:348–354.Google Scholar
3. Cialone, J. C., Braden, D. A., and Smith, N. J. 1970. Studies on the use of chloroxuron and other herbicides for weed control in onions. Proc. Northeast. Weed Cont. Conf. 24:157–166.Google Scholar
4. Duperrex, Aloys. 1946. Origine et histoire de quelques mauvaises heroes. (Origin and history of some weeds). Rev. Hort. Suisse 19:229–231.Google Scholar
5. Hargan, R., Bayer, G., and Cialone, J. 1962. Selective herbicides for several crucifer crops. Proc. Northeast. Weed Cont. Conf. 16:81–88.Google Scholar
6. Hylander, N. 1961. A red-flowered Galinsoga species found in Sweden. Bot. Not. 114:464–467.Google Scholar
7. Lacey, W. S. 1956. A comparison of the spread of Galinsoga parviflora and G. ciliata in Britain. Conf. Rep. Bot. Soc. Brit. Isles 5:109–115.Google Scholar
8. Lascombes, S. 1964. Le Galinsoga aristulata (Bicknell) dan le Sudouest. Bull. Soc. Hist. Natur. Toulouse 99: 390–392.Google Scholar
9. Lawalree, A. 1948. Histogenese florale et vegetative chez quelques Composes (Floral and vegetative histogenesis of some Compositae). Cellule 52:215–294.Google Scholar
10. Lousley, J. E. 1950. The nomenclature of the British species of Galinsoga . Watsonia 1:238–241.Google Scholar
11. Muenscher, W. C. 1955. Weeds. 2nd ed. The Macmillan Co., New York. 560 p.Google Scholar
12. Pladeck, M. 1933. Report of the sub-committee on time of flowering and viability of weed species. Assoc. Off. Seed Anal. N. Amer. Proc. 26:249–254.Google Scholar
13. Sanok, W. J. and Dallyn, S. L. 1971. Weed control in transplant onions grown on mineral soils, 1970. Proc. Northeast. Weed Sci. Soc. 25:221–224.Google Scholar
14. Sanok, W. J. and Dallyn, S. L. 1970. Weed control in transplant onions grown on mineral soil. Proc. Northeast Weed Cont. Conf. 24:167–172.Google Scholar
15. St. John, H. and White, D. 1920. The genus Galinsoga in North America. Rhodora 22:97–101.Google Scholar
16. Touton, J. B. and Coquillat, M. 1960. Renseignements systematiques et geographiques. A propos de l'apparition de Galinsoga aristulata Beckn. en Bresse. (Systematic and geographic data. Concerning the occurrence of Galinsoga arisiulata Beckn. in Bresse). Bull Mens Soc. Linn. Lyon. 29:13–24.Google Scholar
17. U. S. Dep. Agr., Agr. Res. Serv. 1970. Selected weeds of the United States. Agriculture Handbook No. 366, U. S. Govt. Printing Office, Washington, D. C. 463 p.Google Scholar
18. Vengris, J. 1953. Weed populations as related to certain cultivated crops in the Connecticut River Valley, Mass. Weeds 2:125–134.Google Scholar