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Growth and Development of Wild Poinsettia (Euphorbia heterophylla) Selections in Peanut (Arachis hypogaea)

Published online by Cambridge University Press:  12 June 2017

Barry J. Brecke  and
Piotr Tobola
Barry J. Brecke
Affiliation:
Univ. Florida, West Florida Res. & Ed. Ctr., Jay, FL 32565
Piotr Tobola
Affiliation:
Institute of Soil Cultivation and Plant Husbandry, Poznan, Poland
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Abstract

Wild poinsettia is a serious weed in several crops, including peanut, grown in the southeastern United States. A study was conducted over 3 yr at Jay, FL, to characterize the growth and development of wild poinsettia grown from seed collected at Plains, GA; Marianna, FL; and Baton Rouge, LA. Seedlings from each selection were transplanted to the field and were grown either alone or in competition with peanut. Observations made throughout the growing season indicated that the Louisiana selection flowered later, grew to a larger size, produced more leaf area and biomass, and caused greater light attenuation and peanut yield reduction than the other two selections. The Georgia selection produced the smallest plants, least leaf area and biomass, and was least competitive with peanut. The Florida selection was intermediate for these parameters. Wild poinsettia dry biomass production was reduced by 78 to 83% when grown with peanut compared with monoculture wild poinsettia.

Keywords

Wild poinsettia, Euphorbia heterophylla L. ♯ EPHHLpeanut, Arachis hypogaea L. ‘Florunner.’BiotypescompetitionEPHHLphenology
Type
Weed Biology and Ecology
Information
Weed Science , Volume 44 , Issue 3 , September 1996 , pp. 575 - 578
Copyright
Copyright © 1996 by the Weed Science Society of America 

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References

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