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  Turkish Journal of Fisheries and Aquatic Sciences


Turkish Journal of Fisheries and Aquatic Sciences 10: 19-25 (2010)
 
Acute Toxicity of Some Agriculture Fertilizers to Rainbow Trout
 
Erol Capkin1,*, Sevki Kayis1, Halis Boran1, Ilhan Altinok1
 
1 Karadeniz Technical University, Faculty of Marine Science, Department of Fisheries Technology Engineering, 61530 Surmene, Trabzon, Turkey.
 
* Corresponding Author: Tel.: +90.462 7522805/103; Fax: +90.462 7522158;
E-mail: ecapkin@ktu.edu.tr; ecapkin@gmail.com
Received 24 December 2008
Accepted 01 July 2009

Abstract:

The acute toxicity of ammonium sulphate, calcium ammonium nitrate and two different composite fertilizers [15:15:15 (NPK-1) and 25:5:10 (NPK-2)] to juvenile rainbow trout (Oncorhynchus mykiss; 0.89±0.22 g) was evaluated under semi-static conditions. The concentrations of ammonium sulphate, calcium ammonium nitrate, NPK-1 and NPK-2 that killed 50% of the rainbow trout within 96-h (96-h LC50) were 0.149, 0.259, 0.258 and 0.408 g/L, respectively. The mortality of fish was elevated with increasing concentrations of the fertilizers. The time required to kill 50% (LT50) of the rainbow trout at the highest concentrations tested was 11 h 18 min for ammonium sulphate, 12 h 23 min for calcium ammonium nitrate, 13 h 38 min for NPK-1 and 17 h 47 min for NPK-2. Ammonium sulphate was the most toxic compound to rainbow trout compared to composite fertilizers.
Keywords: fertilizer, NPK, acute toxicity, rainbow trout.

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Bazı Tarımsal Gübrelerin Gökkuşağı Alabalıklarına Akut Toksik Etkileri

Amonyum sülfat, kalsiyum amonyum nitrat ve kompozit gübrelerin [15:15:15 (NPK-1) ve 25:5:10 (NPK-2)] gökkuşağı alabalığı (Oncorhynchus mykiss; 0,89±0,22 g) yavruları üzerine olan akut toksik etkileri, 96 saat süreli yarı statik test yöntemi kullanılarak belirlenmiştir. Gökkuşağı alabalıklarının %50’sini 96 saat içinde öldüren amonyum sülfat, kalsiyum amonyum nitrat NPK-1 ve NPK-2 konsantrasyonları sırasıyla 0,242, 0,408, 0,368 and 0,549 g/L’dir. En yüksek toksik konsantrasyona maruz bırakılan gökkuşağı alabalıklarının %50’sinin ölmesi için gereken zaman amonyum sülfat için 11 saat 18 dakika, kalsiyum amonyum nitrat için 12 saat 23 dakika, NPK-1 için 13 saat 38 dakika ve NPK-2 için 17 saat 47 dakika olarak belirlenmiştir. Amonyum sülfatın, kullanılan gübreler içerisinde gökkuşağı alabalıkları üzerine en yüksek toksik etkiye sahip olduğu tespit edilmiştir.
Anahtar Kelimeler: gübre, NPK, akut zehirlilik, gökkuşağı alabalığı
Turkish Journal of Fisheries and Aquatic Sciences (TrJFAS) - Welcome

Turkish Journal of Fisheries and Aquatic Sciences (TrJFAS)


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