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Pests and diseases

Compared to other common crops Portulaca oleracea is quite tolerant towards pests due to its waxy cover, in some instances Portulaca oleracea is even known to have Antifungal properties.[1] However Curvulin and O-methylcurvuclinic can cause necroses on purslance.[2] Dichotomophthora portulacae can cause stem rot.[3]

Schizocerella pilicornis and Hypurus bertrandi are known to feed on Portulaca oleracea. In some instances they may help control the competitiveness of Portulaca oleracea to prevent weed infestation in fields where Portulaca oleracea is not wanted, however they do not stop Portulaca oleracea from growing completely. [4] [1] Banerjee G, Mukherjee A, 2002. Biological activity of a common weed - Portulaca oleracea L. II. Antifungal activity. Acta Botanica Hungarica, 44(3/4):205-208

[2] Kenfield D, Hallock Y, Clardy J, Strobel G, 1989. Curvulin and O-methylcurvulinic acid: phytotoxic metabolites of Drechslera indica which cause necroses on purslane and spiny amaranth. Plant Science, Irish Republic, 60(1):123-127

[3] Mitchell JK, 1986. Dichotomophthora portulacp causing black stem rot on common purslane in Texas. Plant Disease, 70(6):603

[4] Clement SL, Norris RF, 1982. Two insects offer potential biological control of common purslane. California Agriculture, 36(3/4):16-18