Hububat tarlalarında kullanılan Mesosulfuron+Iodosulfuron'un etkili minimum dozlarının saptanması

Öz

Mesosulfuron+ iodosulfuron'un, Zadoks skalasına göre 20–22 ve 30–32 iki farklı döneminde uygulandığında yabancı ot kuru ağırlığında %90 (ED90) azalmaya neden olan etkili minimum dozları Ankara ve Konya illerinde 2008 ve 2009 yıllarında yürütülen çalışmalarla araştırılmıştır. Mesosulfuron + iodosulfuron'un 3 farklı alandaki 15 yabancı ot türü için minimum etkili dozları doğrusal-olmayan regresyon analizi ile hesaplanmıştır. ED90 değerlerinin Altınova Tarım İşletmesi Müdürlüğü (TİM)'nde erken dönemde 13.11–23.54, geç dönemde 15.06–23.60; Konuklar TİM'nde 10.82–15.07, geç dönemde 12.70–15.78; Polatlı TİM'nde ise erken dönemde 12.47–19.63 ve geç dönemde 14.06–23.77g da-1 olduğu hesaplanmıştır.

Anahtar Kelimeler

• Mesosulfuron + iodosulfuron, minimum doz, yabancı ot gelişme dönemi

Determination of the effective minimum doses of Mesosulfuron+Iodosulfuron in cereal fields

Abstract

Minimum lethal herbicide doses (MLHD), the herbicide doses reduced the dry weight of the weeds at 90% (ED90), of mesosulfuron + iodosulfuron used in two different periods, Zadoks scale 20-22 and Zadoks scale 30-32 growth stages, were investigated in Ankara and Konya provinces from 2008 to 2009. MLHD of mesosulfuron + iodosulfuron for 15 weeds in the three experimental areas was calculated to be used with non-linear regression analysis. ED90 values in Altınova State Farm (SF), Konuklar SF and Polatlı SF, respectively, were estimated 13.11-23.54, 10.82-15.07 and 12.47-19.63 when used the herbicide at early stage, while 15.06-23.60, 12.70-15.78 and 14.06-23.77 g da-1 when used the herbicide at late stage.

Keywords

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