search
for
 About Bioline  All Journals  Testimonials  Membership  News


Iranian Journal of Environmental Health, Science and Engineering
Iranian Association of Environmental Health (IAEH)
ISSN: 1735-1979
Vol. 3, No. 2, 2006, pp. 103-108
Bioline Code: se06016
Full paper language: English
Document type: Research Article
Document available free of charge

Iranian Journal of Environmental Health, Science and Engineering, Vol. 3, No. 2, 2006, pp. 103-108

 en EVALUATION OF BUTACHLOR FOR CONTROL OF SUBMERGEDMACROPHYTES ALONG WITH ITS IMPACT ON BIOTIC COMPONENTSOF FRESHWATER SYSTEM
Chattopadhyay, A.; Adhikari, S.; Adhikary, S. P. & Ayyappan, S.

Abstract

In this investigation, the efficacy of the herbicide butachlor, (N-butoxymethyl-2 chloro-21, 61 diethyl acetanilide) was tested against few common submerged macrophytes namely Hydrilla (Hydrilla verticillata (L.) Royale), Najas (Najas minor All.), Nechamandra (Nechamandra alternifolia (Roxb.) Thwaites) and Ottelia (Ottelia alismoides (L.) Pers.) of freshwater fish ponds. Almost complete decay of Hydrilla, Nechamandra and Ottelia was achieved at 7.5 L of active ingredient/ha/m butachlor within 15 days while the herbicide showed no negative effect on Najas. However at the same concentration of butachlor, total mortality of zooplankton and water fern Azolla (Azolla caroliniana Lamarck) occurred within seven days. In case of few freshwater fish species like Rohu (Labeo rohita), Channa (Channa punctatus), Anabas (Anabas testitudineus) and Heteropneustes (Heteropneustes fossilis), total mortality occurred upto 90 days after application of the same dose of butachlor but fish survived beyond 120 days of herbicide application indicating degradation of the herbicides.

Keywords
Hydrilla verticillata, Najas minor, Nechamandra alternifolia, Ottelia alismoides,Azolla caroliniana, butachlor

 
© Copyright 2006 - Tehran University of Medical Sciences Publications
Alternative site location: http://diglib.tums.ac.ir/pub/

Home Faq Resources Email Bioline
© Bioline International, 1989 - 2024, Site last up-dated on 01-Sep-2022.
Site created and maintained by the Reference Center on Environmental Information, CRIA, Brazil
System hosted by the Google Cloud Platform, GCP, Brazil