Cube root powder is a better piscicide than bleaching powder for pre-stocking carp nursery pond preparation

被引：0

作者：

Das P.C. ^{[1
]}

Jena J.K. ^{[1
]}

Nanda N.B.P. ^{[1
]}

Bhatnagar D.D. ^{[1
]}

机构：

[1] Central Institute of Freshwater Aquaculture, Bhubaneswar-751 002, Orissa

来源：

Toxicological and Environmental Chemistry | 2010年 / 92卷 / 01期

关键词：

Chlorine; Chlorophyll; Plankton; Rotenone; Toxicity;

D O I：

10.1080/02772240902756802

中图分类号：

学科分类号：

摘要：

Yard and pond applications of cube root powder (CRP) at 2.5 mg L-1 and bleaching powder (BP) at 10 mg L-1 Cl- produced total fish kill within 14-24 h. Safe periods for stocking fingerling and fry of carps were on 8th and 11th day following CRP application against 4th day for BP. Pond chlorophyll concentrations did not change with CRP application, but was markedly affected by BP. Zooplankton population reduced by 88-95% with BP application compared to 70% with CRP. Initial zooplankton densities were revived in ponds up to 84.6 and 120.5% on 12th and 20th day, respectively with CRP application, while similar BP applications failed to reach initial levels even after 20 days. Based on the result, the study revealed CRP to be a better piscicide than bleaching powder for pre-stocking pond preparation. © 2010 Taylor & Francis.

引用

页码：137 / 147

页数：10