Abstract
Weeds are consider as a significant important biological indicator of crop production resulting to yield loss of about 50%. Identification of weeds is very difficult from their morphological features. Despite wees are the real challenge in farming in the developed, developing and underdeveloped countries. Nevertheless, weeds ar also part of primary producers. Major constrain of crop production are weeds but they are also consider as important aspect of agricultural system in the world. Weeds are wild plants grow in an environment without the contribution of any human activities that that have positive or negative impact to the environment. The aim of the study is to documents weeds of family Boraginaceae and agricultural crops grown in Taif region of Saudi Arabian kingdom in a mountain with an elevation level of (Area A = Al sail 1700 m, Area B = Al Wahat and Al Watit 1500, C = Leeih 1500, D = AL Gaim and Saisad 1500, F = E = Al Shafa 2200 m, F = AL Hada = 2000 m). The study was carried out based on enviromental survey. Diverse number of weeds were identified and collected from the examined study area. Results revealed aggressive weeds species. Echium vulgars, Heliotropium currsivicium and Sisymbrium orientale. Similarly, ten agricultural crops were documented from the study area; Portulaca oleracea, Ficus carica, Phoenix dactylifera, Solanum melongena, Punica granatum, Solanum lycopersicum, Vitis spp, Vicia faba, Cucurbita pepo and Rosa damascene. Findings from the studyof the will aid management control and proposing research toward improved new weed control measures. Also has provided insight on purposeful weeds control in Taif Area.