Effect of Leaf Alcoholic and Aqueous Washing Solution of Terebinth, Pistacia palaestina Boiss on Germination and Seedling Growth of Some Weeds

Abstract

The inhibitory effect of leaf alcoholic and aqueous washing solution of terebinth, Pistacia palaestina Boiss was evaluated on four weed species viz. alfalfa, Medicago sativa L., white wall rocket, Diplotaxis erucoides (L.) DC., corn sow thistle, Sonchus arvensis L. and rough poppy, Papaver hybridum L. at the Weed Biological Control Section in Biological Control Studies and Research Centre, Faculty Of Agriculture, Damascus University, during the period May, 2013 to November 2014. Results showed that all tested weeds were affected by the washing solution of Terebinth, P. palaestina where the most affected weed species with the aqueous wash (100%) at laboratory was alfalfa, M. sativa with reduction rates of (21, 24.41 and 29.97%) for germination, seedling height and dry matter ratio, respectively. The alcoholic wash affected greatly on D. erucoides with reduction rates of (30, 23,29 and 33,05%) for the previous traits. Similar results were reported from the net house trial as the aqueous wash (100%) highly affected on alfalfa for the plant number, plant height and dry matter ratio (16., 37.4 and 16.8%) respectively, and the same results for the alcoholic wash effect on D. erucoides (27.5, 44,4 and 26,1%).