Mehmet Kerim GÜLLAP, Ali KOÇ, Halil İbrahim ERKOVAN, Şule ERKOVAN

Adi Fiğin Çimlenmesi ve Fide Özelliklerine Düşük Sıcaklık ve Aşırı Su Uygulamalarının Etkisi

Serin iklim kuşağında ilkbaharda düşük sıcaklık ve aşırı nem tohum çimlenmesi ile fide gelişimini etkileyen en önemli faktörlerdendir. Bu çalışma serin iklim bölgelerinde ilkbahar aylarında sık rastlanılan düşük sıcaklık ve aşırı nemin fiğ bitkisinin çimlenmesi ve fide özellikleri üzerine etkilerini araştırmak amacıyla yürütülmüştür. Düşük sıcaklığın tohum çimlenmesini geciktirdiği, aşırı nem ise önce artırmakla birlikte daha sonra azalmasına sebep olduğu kaydedilmiştir. Düşük sıcaklık bitki boyu, sürgün kuru madde üretimi, süzük elektriksel iletkenliği ve pH'sını olumsuz yönde etkilemiştir. Aşırı su uygulaması ise kök kuru madde üretimi ile bitki süzüğü pH üzerine bir etkisi söz konusu olmamıştır. Haftada 2 aşırı su uygulaması sürgün kuru madde üretimi hariç incelenen diğer özellikleri olumlu olarak etkilemiştir. Düşük sıcaklık ve su interaksiyonu ise kök süzüklerinde ölçülen pH hariç önemli bulunmuştur. Sonuç olarak düşük sıcaklık ve aşırı nem önemli bir stres kaynağı olduğu, başarılı bir tesis için toprak sıcaklığının 9°C ve toprakların yeterince havalanması gerektiği sonucuna varılmıştır

Effect of Low Temperature and Excess Water Application on Germination and Seedling Characteristics of Common Vetch

Low temperature and excess water in the spring are the most important factors affecting seed germination and seedling growth under cool climate. This study was conducted to determine the effect of low temperatures and excess water on germination and seedling characteristics of common vetch. The results showed that the low temperature delayed seed germination and excess water caused it to increase firstly and then decrease. Low temperature negatively affected plant height, shoot dry matter production, leachate electrical conductivity (EC) and leachate pH. Excess water had not effect on root dry matter production and root leachate pH. Except for shoot dry matter production, 2 times per week excess water application positively affected investigated parameters. Low temperature and excess water interactions are significant all parameters except for root leachate pH. As a result of this study, low temperature and excess water were a stress source, therefore soil temperature should reach about 9°C and provide proper aeration condition for a successful establishment in the spring at the cool climate

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Kaynaklar
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