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Title: Aquatic weeds : problems and solution
Authors: Kapoor, Riti Thapar
Issue Date: Jun-2016
Publisher: NISCAIR-CSIR, India
Abstract: Water is precious resource because life can not exist without it. Anthropogenic activities, industrialization and immense agricultural practices are adversely affecting the water bodies. Water hyacinth (Eichhornia Crassipes) is a perennial aquatic herb which belongs to the family Pontedericeae. Its rate of proliferation is extremely rapid and it can spread to cause infestations over large areas of water. It grows and forms mats up to 2 meters thick which can reduce light and oxygen, change water chemistry, affect flora and fauna of aquatic system and cause significant increase in water loss due to evapotranspiration. It is now considered a serious threat to biodiversity. Aquatic weeds contain approximately 95% water and protein content and can be used for various applications. Water hyacinth can be used for water purification from sewage systems as it absorbs heavy metals. Water hyacinth can be used as a green manure or as compost. The compost increases soil fertility and crop yield and improves the quality of the soil. The use of water hyacinth for animal feed can solve the nutritional problems. Alligator weed (Alternanthera philoxeroides) is also a troublesome weed because it invades both land and water. Alligator weed forms stands of dense, interwoven stems which block irrigation ditches and infrastructure. It can replace the native vegetation and interferes with crops and pastures in low-lying, poorly drained areas and impede fishing and boating. For the management of aquatic weeds many technical solutions are available but there is a need to identify such eco - friendly strategies for the management and proper utilization of these aquatic weeds.
Page(s): 102-105
Appears in Collections:BVAAP Vol.24(1) [June 2016]

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