Weeds growth in valley of Leeyh, south of Taif area, Saudi Arabia

Wild plants developing in areas without the desire or wills of human and known as weeds, that could be beneficial or not. The aim of the present study was to identify and record the weed species grown in the agricultural land in the regions of Valley of Leeyh, South of Taif area, which is located on the Eastern slopes of the Al-Sarawat Mountains with an altitude of 1700 m from sea level. Different weed species has been collected, processed by cleaning and identified from the surveyed area. The study was conducted between 2016 and 2017. The results showed that Cherepodiaceaehad the highest number of weeds species followed by Uriticaceaeand Malvaceae. The lowest weeds species count recordedin Cappaeaceae followed by Chenopodiaceae and Aizoaceae. The highestweeds count of agricultural cropsrecorded in Cucurbita pepo, Coriandrum sativumandPetroselinum annum. The lowest weed in Taif agriculturalfields recorded in the Medicago sativaplantations followed by Capparis deciduaand Zea mays. Dominantweeds species include Urtica dloica, Malva perviflore, Chenopodium valvaeia, Amaranthus vindi, Cynodon dactylon, Portulacaoleracea.This study has the potential in developing the valley south of Taif areafor agricultural purposes.The findings of this study will be beneficial in suggesting suitable weed control recommendation in agricultural crop land of Taif area.