Environmental impact assessment of agrochemicals for fish production - a review paper

Ngbede, V.O. (1999) Environmental impact assessment of agrochemicals for fish production - a review paper. In: 13th Annual Conference of the Fisheries Society of Nigeria (FISON) , 3-8 November 1996 ,New Bussa, Nigeria, pp. 84-91.

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Abstract

The environmental impact of agro-chemicals for fish production was extensively reviewed. The positive contribution of agro- chemicals and the devastating effect on aquaculture was x-rayed to alert users to this obvious environmental problem. Lime and fertilizers are commonly used in fish farming to increase pH of pond soil and water and to increase alkalinity and hardness, reduce humic acid content and to initiate primary and secondary productivity. Devastating effect of lime on environment is likely to be minimal. In the case of fertilizers, over utilization of this agro-chemical could impair water quality as phytoplankton bloom become excessive which consequently raises BOD. The use of Therapeutants in aquaculture was discovered to be more popular in Europe and North America than in the tropics (Africa). Commonly used therapeutants include antibiotics and antimicrobials. For fish pathology chemicals like formalin, potassium permanganate, Dipterex and malachite green are widely in use. Effluent from farms where these chemicals are commonly in use can distort the aquatic ecosystem. The changes in water quality, aquatic community structure and productivity caused by intensive aquaculture are typical of the impacts of pollution from a wide variety of sources like sewage, agricultural run-off and effluent discharges from industry

Item Type: Conference or Workshop Item
Title: Environmental impact assessment of agrochemicals for fish production - a review paper
Personal Creator/Author:
CreatorsEmail
Ngbede, V.O.
Page Range: pp. 84-91
Date: 1999
Event Title: 13th Annual Conference of the Fisheries Society of Nigeria (FISON)
Event Type: Conference
Event Location: New Bussa, Nigeria
Event Dates: 3-8 November 1996
Issuing Agency: Fisheries Society of Nigeria
Uncontrolled Keywords: Nigeria; chemical pollutants; environmental assessment; Eenvironmental effects
Subjects: Pollution
Environment
Chemistry
Item ID: 3728
Depositing User: Ms Maria Kalentsits
Date Deposited: 11 Jul 2010 05:50
Last Modified: 29 Sep 2011 16:56
URI: http://aquaticcommons.org/id/eprint/3728

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