文章基本信息

标题：Influence of Combinations of Pesticides and Fertilizers on Aquatic Productivity
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作者：Ganapati Hegde ; Mahesh Mandya ; Sushma S. Gokarnakar 等
期刊名称：Journal of Environmental Protection
印刷版ISSN：2152-2197
电子版ISSN：2152-2219
出版年度：2014
卷号：05
期号：05
页码：434-440
DOI：10.4236/jep.2014.55046
语种：English
出版社：Scientific Research Publishing
摘要：We have examined the effects of environmentally realistic concentrations of widely used pesticides and fertilizers for rice paddy in Western Ghats regions of India on chlorophyll and zooplankton production using a laboratory mesocosm. Malathion (100 μg·L-1), Cypermethrin (25 μg·L-1), Nitrate-nitrogen (8 mg·L-1) and Phosphate-phosphorus (8 mg·L-1) in different combinations such as pesticide-pesticide and pesticide-fertilizer were tested in fully factorial manner for a period of 42 days. Study revealed that, chlorophyll production was supported by addition of fertilizers, while combinations of fertilizers with either one or two pesticides reduce the zooplankton density and diversity rendering chlorophyll concentration more than control groups. This could indicate the reason for eutrophication of ponds located in agro-ecosystems. Single application of combinations of pesticides (in spite of presence of fertilizers) even at low concentrations can produce severe negative effects on several taxonomic groups zooplankton living in small shallow water.
关键词：Chlorophyll Production; Zooplankton; Pesticide; Fertilizers; Combinations of Pesticides and Fertilizers