Abstract:Weeds are plants that are not desirable in a particular place, time and area. There are around 250,000 plant species on the planet, with about 3% or 8000 species, acting as weeds. Of those most of the area known species infest non-cropped areas. Weed flora, including annual, biennial and perennial grasses, sedges, and broad-leaf weeds, infest non-cropped regions. Wastelands (48%) have the most species followed by cultivated fields (20%), roadsides (14%), and forests (8%). Weeds in non-cropped areas decrease th… Show more
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