Control of invasive aquatic plant (Eichhornia crassipes) by using extract of medicinal plant

Abstract

(Eichhornia crassipes) is herps had develop a serious environmental problem in Iraq. it contributes to the major part of ecological hazards from the invasion of foreign plant species . Allelopathy interactions are based primarily on the production of secondary chemicals by higher plants that produce a wide array of biochemical compounds that create biological changes , therefore, this herb was growthen in the (4 basine) with the addition of a quantity of water (Calotropis procer ) to each basin and added a quantity of the treated plant ( 45 cm × 82 cm ) in the form of powder. The results were observed externally through the descriptive description and internally through the biological indicators in the herb of the Nile During the seven days of growth and follow-up .. The most effective concentrations in controlling the growth of herb Nile is the second (20 mg/L) where the results were prominent and excellent in this concentration.