Evaluation of the Efficiency of Plant Extracts and Pesticides against Fungus Fusarium oxisporum which Causes Fusarium Wilt Disease on the Cucumber

Abstract

This research conducted to evaluate the efficiency of the Alcoholic extract of Datura stramonium , Artemisia and chemical pesticide (Rizolex) against plant pathogenic fungus Fusarium oxysporum f. sp. Cucumerinum on cucumber under laboratory and plastic house condition using three concentration 2,4,6%. The results of the laboratory experiments showed superiority of 6% concentration for each of Rizolex Datura, and Mugworts in inhibiting the growth of the fungus, in the Petri dishes to 0.0, 0.0, 0.6cm respectively with significant differences from the control 9cm. Furthermore, the plastic house experiment result also showed the superiority of the same concentration in lowering disease severity, the average of disease severity was 10, 29.33, and 58.33% respectively after 30 days of spraying with tested extracts with significant differences compared to the disease severity of the control 0.0%. When the fresh, dry weight and height of the plants were calculated at the end of the plastic house experiment, the superiority of the chemical pesticide appeared 7.61, 0.53 g 17.13cm respectively for each of the Datura, Mugworts Alcoholic extracts 6.83, 0.43g 15.83 cm, 5.31, 0.57 g 14.20 cm respectively compared with control treatment 3.75, 0.57g 12.17 cm, respectively.