Acute Toxicity (LC50) Of Cyhalofop Butyl on Gambusia Holbrooki

Year 2020, , 2394 - 2399, 15.12.2020

Utku Güner

https://doi.org/10.21597/jist.718688

Abstract

Cyhalofob butyl is a synthetic herbist. This herbicide is a systemic herbicide and is used in weed control especially on celtic agriculture. In this study, the acute toxicity (LC50) of this herbist (Chillinger 200 EC 200, cyhalofob butyl) was investigated, which is currently used intensely in the fight against herbists in Thrace region, including Cyhalofob butyl. Acute toxicity (LC50 value) for this herbicide has been investigated in the common mosquito fish (Gambusia holbrooki) in Thrace Region. Lethal Dose 50 experiments were performed in 3 replicates in static test runs (water temperature 27.70 ±0.56 C, water pH 8.88± 0.37, and conductivity 718.25±21.113 µhos). The experiment results obtained for Chillinger 200 ec during the experiments were evaluated by Trimmed Spearman–Karber method. 96-hour LC50 value for the mosquito fish Gambusia holbrooki was calculated as 4.140 ppm.

Keywords

Cyhalofob butyl, Gambusia holbrook, Lethal Dose 50

Cyhalofop butyl in’ Gambusia holbrooki üzerindeki Akut toksisitesi (LC50)

Abstract

Cyhalofop-butyl sentetik herbist grubundadır. Bu herbisit sistemik bir herbisit olup özelikle celtik tarımında yabancı ot mücadelesinde kullanılmaktadır. Bu herbist sucul ekosistem için oldukça toksitir. Bu çalışmada Cyhalofop butyl içeren halen Trakya bölgesinde herbist mücadelesinde yoğun olarak kullanılana bu herbistin (Chillinger 200 EC , 200 Cyhalofop butyl) akut toksitesi (LC50) araştırılmıştır. Bu herbisit için akut toksisite (LC50 değeri) Trakya Bölgesinde yaygın sivrisinek balığında (Gambusia holbrooki ) araştırılmıştır. Lethal Doz 50 deneyleri 3 tekrarlı olarak statik deney koşularında (su sıcaklığı 27.70 ±0.56 ◦C, pH 8.88± 0.37, iletkenlik 718.25±21.113 μhos) gerçekleştirilmiştir. Deneyler buyunca Chillinger 200 EC için elde edilen deney sonuçları Trimmed Spearman–Karber yöntemiyle değerlendirilmiştir. Sivrisinek balığı , Gambusia holbrooki, için 96-saat LC50 değerleri 4.140 ppm olarak hesaplanmıştır.

Keywords

Cyhalofop butyl, Gambusia holbrooki, Lethal Doz 50

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