Results 131 to 140 of about 712 (153)
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Wild Poinsettia (Euphorbia heterophylla) Germination and Emergence
Weed Science, 1995Wild poinsettia germination was at least 95% when exposed to solution pH of 2.5 to 10 or solution osmotic potential of up to −0.8 MPa. No germination was observed at pH 12 or osmotic potential of −1.5 MPa. Light was not required for germination. Seed germinated at temperatures ranging from 20 to 40 C with maximum germination of 97% at 35 C.
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Helia, 2015
Abstract Determining the mode of action of allelochemicals is one of the challenging aspects in the allelopathic studies. In this research, the methanolic extracts of wild poinsettia ( Euphorbia heterophylla Linn.) at different concentrations (0, as untreated control, 8%, 12%
Ali Reza Safahani Langeroodi +2 more
exaly +2 more sources
Abstract Determining the mode of action of allelochemicals is one of the challenging aspects in the allelopathic studies. In this research, the methanolic extracts of wild poinsettia ( Euphorbia heterophylla Linn.) at different concentrations (0, as untreated control, 8%, 12%
Ali Reza Safahani Langeroodi +2 more
exaly +2 more sources
Interference of Wild Poinsettia (Euphorbia heterophylla) with Soybean (Glycine max)
Weed Technology, 1994Field-studies were conducted over two years to determine the area of influence and duration of interference of wild poinsettia in soybean. Soybean canopy width averaged across years was reduced approximately 10% beginning at 6 wk of interference for both the 0- to 10-and 10-to 20-cm distances from the weed.
Teresa S. Willard +3 more
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Growth Response of Wild Poinsettia (Euphorbia heterophylla) Following Foliar Herbicide Applications
Weed Technology, 1993Greenhouse and field studies were conducted to characterize wild poinsettia growth response to imazaquin (140 g ai ha−1), fomesafen and acifluorfen (420 g ai ha−1), and chlorimuron (9 g ai ha−1) applied at 5 to 7 cm (POST1), 8 to 10 cm (POST2), and 15 to 20 cm (POST3). Based on reductions in weed height and lateral branch number 28 DAT, wild poinsettia
Teresa S. Willard, James L. Griffin
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Wild Poinsettia (Euphorbia heterophylla) Interference by Peanut (Arachis hypogaea)
Weed Science, 1992Research was conducted during 1988 and 1989 in Georgia and Florida to determine the densitydependent effects and critical periods of wild poinsettia interference with peanut. Peanut yield loss ranged from 0 to approximately 50% over the wild poinsettia density range from 0 to 32 plants 9 m−1peanut row.
David C. Bridges +2 more
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Wild Poinsettia (Euphorbia heterophylla) Control in Peanut (Arachis hypogaea)
Weed Science, 1990Wild poinsettia control in peanut was evaluated following various preplant-incorporated and postemergence herbicide applications. The addition of vernolate or alachlor to a preplant-incorporated treatment of benefin improved wild poinsettia control obtained with treatments of lactofen or paraquat plus alachlor applied at the time of peanut emergence ...
J. David Moore +2 more
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Weed Science, 2009
Native polyacrylamide gel electrophoresis was used in the current study to identify polymorphism in α- and β-esterase loci in leaf tissues of wild poinsettia plants for the analysis of genetic diversity and structure of populations. Seeds were collected from different plants in 12 different populations.
Mariléia J. Frigo +3 more
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Native polyacrylamide gel electrophoresis was used in the current study to identify polymorphism in α- and β-esterase loci in leaf tissues of wild poinsettia plants for the analysis of genetic diversity and structure of populations. Seeds were collected from different plants in 12 different populations.
Mariléia J. Frigo +3 more
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Weed Science, 1996
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.
Barry J. Brecke, Piotr Tobola
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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.
Barry J. Brecke, Piotr Tobola
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Journal of Experimental Agriculture International
Plant extracts could be used as substitutes to synthetic pesticides in the management of fungi and other plant pathogens. The biofungicidal potential of aqueous extracts of wild poinsettia (Euphorbia heterophylla L., a weed) and African ebony (Diospyros crassiflora Hiern, a tree) leaves, and Ashanti pepper (Piper guineense Schumach., a spice) seeds was
Ayeoffe F. Lum +4 more
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Plant extracts could be used as substitutes to synthetic pesticides in the management of fungi and other plant pathogens. The biofungicidal potential of aqueous extracts of wild poinsettia (Euphorbia heterophylla L., a weed) and African ebony (Diospyros crassiflora Hiern, a tree) leaves, and Ashanti pepper (Piper guineense Schumach., a spice) seeds was
Ayeoffe F. Lum +4 more
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Australasian Plant Pathology, 2010
Lewia chlamidosporiformans (Ascomycota) is a recently described fungal species that is a highly virulent pathogen of wild poinsettia (Euphorbia heterophylla — Euphorbiaceae), one of the worst weeds in Brazilian agriculture and an aggressive invader of soybean fields.
B. S. Vieira, R. W. Barreto
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Lewia chlamidosporiformans (Ascomycota) is a recently described fungal species that is a highly virulent pathogen of wild poinsettia (Euphorbia heterophylla — Euphorbiaceae), one of the worst weeds in Brazilian agriculture and an aggressive invader of soybean fields.
B. S. Vieira, R. W. Barreto
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