Impact of Leaf Mining on the Growth of Portulaca oleracea (Common Purslane) and Its Competitive Interaction with Beta vulgaris (Sugarbeet)

1997 ◽  
Vol 34 (2) ◽  
pp. 349 ◽  
Author(s):  
Robert F. Norris
Keyword(s):  
Beta Vulgaris ◽  
Competitive Interaction ◽  
Portulaca Oleracea ◽  
Leaf Mining ◽  
Common Purslane

Common Purslane Competition in Table Beets and Snap Beans

Weed Science ◽  
1971 ◽  
Vol 19 (1) ◽  
pp. 4-6 ◽  
Author(s):  
Jonas Vengris ◽  
Maria Stacewicz-Sapuncakis
Keyword(s):  
Phaseolus Vulgaris ◽  
Beta Vulgaris ◽  
Field Trials ◽  
Portulaca Oleracea ◽  
Snap Beans ◽  
Bean Plants ◽  
Common Purslane

Competition studies in field trials were conducted between common purslane (Portulaca oleraceaL.) and table beets (Beta vulgarisL., var. Detroit Red) and between common purslane and snap beans (Phaseolus vulgarisL., var. Eastern Butter). Common purslane control was most critical during the first 2 weeks after beet and bean emergence. Common purslane control for longer than 2 weeks did not increase beet or bean yields. The longer common purslane was allowed to compete after beet or bean emergence, the more yields were decreased. Common purslane was a stronger competitor in beets than in beans. The faster and taller-growing bean plants provided more competition than did beets. Cultivation between rows until lay-by increased both beet and bean yields.

Diabrotica adelpha Harold1 and Diabrotica balteata LeConte1 Feeding on Common Purslane (Portulaca oleracea L.) at Tamaulipas, México

2021 ◽  
Vol 45 (4) ◽  
Author(s):  
Jorge Ariel Torres-Castillo ◽  
Eduardo Padrón-Torres ◽  
Leonardo Uriel Arellano-Méndez ◽  
Miguel Ángel García-Delgado ◽  
Reyna Ivonne Torres-Acosta
Keyword(s):  
Portulaca Oleracea ◽  
Diabrotica Balteata ◽  
Common Purslane

Discovery of a Common Purslane (Portulaca oleracea) Biotype Resistant to Linuron

1999 ◽  
Vol 13 (3) ◽  
pp. 599-605 ◽  
Author(s):  
Joseph G. Masabni ◽  
Bernard H. Zandstra
Keyword(s):  
Daucus Carota ◽  
Field Experiments ◽  
Portulaca Oleracea ◽  
Resistance Ratio ◽  
Cross Resistance ◽  
Preliminary Evaluation ◽  
Low Level ◽  
Greenhouse Experiments ◽  
Test Kit ◽  
Common Purslane

Greenhouse and field experiments were conducted to confirm and quantify linuron resistance in common purslane (Portulaca oleracea) collected from a carrot (Daucus carota) field in Imlay City, MI. Preliminary evaluation was made using a flotation test kit to identify resistance to linuron and atrazine. Subsequent greenhouse experiments indicated that this common purslane was resistant to 11.2 kg/ha linuron and 179 kg/ha atrazine. The resistance ratio for linuron was > 300 and was > 400 for atrazine. The resistant common purslane was also highly resistant to diuron, cyanazine, and prometryn but had a low level of negative cross-resistance to bromoxynil. Both resistant and susceptible biotypes of common purslane were sensitive to hexazinone and bentazon.

Protein and Nucleic Acid Syntheses in Dark-dormant Common Purslane(Portulaca oleracea)Seed

Weed Science ◽  
1978 ◽  
Vol 26 (6) ◽  
pp. 669-672 ◽  
Author(s):  
Bonnie J. Reger ◽  
Ida E. Yates
Keyword(s):  
Protein Synthesis ◽  
Nucleic Acid ◽  
Rna Synthesis ◽  
Acid Synthesis ◽  
Portulaca Oleracea ◽  
Dark Incubation ◽  
Radicle Protrusion ◽  
Lag Period ◽  
Common Purslane ◽  
H Protein

Dark-incubated common purslane(Portulaca oleraceaL.) seed synthesize very little protein and essentially no nucleic acids. Dark-incubated seed incorporate only 14 × 10−3nmoles14C-leucine/mg protein/12-h dark. In contrast, seed exposed to 12-h light following 24-h dark incubation incorporate 365 × 10−3-nmoles14C-leucine/mg protein/12-h light. Once dormancy is broken by exposure of seed to light, initiation of radicle protrusion occurs at 12 h. Protein synthesis gradually increases with time in the light and precedes nucleic acid synthesis which is associated with radicle protrusion. During the 12-h lag period preceding radicle protrusion protein synthesis increases significantly by 3 to 9 h in light, RNA synthesis by 9 h in light, and DNA synthesis by 12 h in light. After 12 h in light,32P can be detected in all nucleic acid fractions, DNA and RNAs.

Influence of method of phosphorus application on smooth pigweed (Amaranthus hybridus) and common purslane (Portulaca oleracea) interference in lettuce

Weed Science ◽  
2004 ◽  
Vol 52 (5) ◽  
pp. 797-801 ◽  
Author(s):  
Bielinski M. Santos ◽  
Joan A. Dusky ◽  
William M. Stall ◽  
Thomas A. Bewick ◽  
Donn G. Shilling
Keyword(s):  
Portulaca Oleracea ◽  
Amaranthus Hybridus ◽  
Common Purslane ◽  
Phosphorus Application ◽  
Smooth Pigweed

Selectivity of Nitrofen and Oxyfluorfen BetweenPortulaca oleraceaEcotypes and Two Cabbage(Brassica oleraceavar.capitata)Cultivars

Weed Science ◽  
1978 ◽  
Vol 26 (6) ◽  
pp. 640-642 ◽  
Author(s):  
S. F. Gorske ◽  
H. J. Hopen
Keyword(s):  
Portulaca Oleracea ◽  
Fresh Weight ◽  
University Of Illinois ◽  
The World ◽  
Common Purslane ◽  
The University

A collection of common purslane(Portulaca oleraceaL.) ecotypes from various locations around the world was assembled at the University of Illinois. Applications of nitrofen (2,4-dichlorophenyl-p-nitrophenyl ether) to the various ecotypes showed that 3 of the 26 ecotypes [India, Mexico, and Florida (Sanford)] exhibited some degree of tolerance. This marginal tolerance rapidly disappeared as the rate of nitrofen increased beyond 0.56 kg/ha. All of the ecotypes tested were susceptible to applications of oxyfluorfen [2-chloro-2-(3-ethoxy-4-nitrophenoxy)-4-(trifluoromethyl)benzene]. Oxyfluorfen was toxic to common purslane plants at rates as low as 5 g/ha. Treatment of ‘Hybelle’ (tolerant) and ‘Rio Verde’ (susceptible) cabbage(Brassica oleracevar.capitataL.) cultivars with 3.36 kg/ha nitrofen reduced plant fresh weight to 82% and 62%, respectively, of control. Oxyfluorfen at 0.15 kg/ha reduced fresh weight to 60% and 27% for Hybelle and Rio Verde, respectively. Applications of nitrofen at 3.36 kg/ha reduced plant fresh weight in Hybelle the same amount as 100 g/ha oxyfluorfen and 70 g/ha in Rio Verde.

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