EFFECT OF TRIFL URALIN ON NITRIFICATION AND CATALASE ACTIVITY OF THE SOIL.

Year 1995, Volume: 01 Issue: 01, 41 - 46, 01.01.1995

Sevinç Arcak Satea M. Omar Koray Haktanır

https://doi.org/10.1501/Tarimbil_0000000604

Abstract

Effect of Trifluralin, used as preemergence herbicide, on soil nitrification and soil catalase activity were studied on a fine textured soil sample. Soil samples, treated with three different doses of Trifluralinin 0.0 mg , 0,4 mg and 0,8 mg active ingredient kg" I as equivalent application rate of treflan 0.0, 200 and 400 ml active indegredient da1 , at three different moisture levels 75 %, 100 % and 150 % of field capacity at 27 °C were incubated for 18 days. Testing of trifluralin doses signifı cantly P

Keywords

Nitrification, soil catalase activity, herbicides, soil moisture.

TRİFLURALİN'İN TOPRAKTA NİTRİFİKASYON VE KATALAZ AKTİVİTESİNE ETKİLERİ

Abstract

Çıkış öncesi herbisit olarak kullanı lan Trifluralin' in toprakta nitrifıkasyon ve toprak katalaz aktivitesi üzerine etkileri ince tekstürlü toprak örne ğinde üç farkl ı dozda 0.0, 200 ve 400 ml. aktif madde. da- I olacak şekilde % 48'lik treflanden 0.0, 0.4 ve 0.8 mg aktif madde. kg - I trifluralin uygulanarak; üç farkl ı nem düzeyinde tarla kapasitesinin % 75, % 100 ve % 150 , 27 °C de ve 18 gün süreyle inkübe edilerek ara ştınlmıştır. Uygulanan trifluralin dozlan zaman ve nem düzeylerine ba ğlı olarak katalaz aktivitesi de ğişimini önemli düzeyde P< 0.01 etkilemiştir. Nitrifıkasyon olayı ise nem düzeylerine bağlı olarak zaman içinde P< 0.01 düzeyinde önemli bir art ış göstermiştir.

Keywords

Nitrifıkasyon, toprak katalaz aktivitesi, herbisitler , topra ğın nemi.

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