Hatay ilinde farklı kanola çeşitleri üzerinde lahana yaprak güvesi, Plutella xylostella (L.) (Lepidoptera: Plutellidae)’nin popülasyon yoğunluğunun değerlendirilmesi

Amaç: Hatay ilinde farklı kanola çeşitleri üzerinde lahana yaprak güvesi, Plutella xylostella (L.) (Lepidoptera: Plutellidae)’nin popülasyon yoğunluğunun değerlendirilmesi Yöntem ve Bulgular: Çalışma 2007-2009 yıllarında Hatay ilinde farklı kanola çeşitleri üzerinde lahana yaprak güvesi popülasyon yoğunluğunun değerlendirilmesi amacıyla yürütülmüştür. Çalışma altı farklı kanola 'Hydromel', 'Elvis', 'Sarı', 'Lycosmos', 'Hunter' ve 'Sory' çeşitlerinde yürütülmüştür. Örneklemeler her kanola tarlasından 45 cm çapında atrapla 25 (ileri-geri) şeklinde alınmıştır. Lahana yaprak güvesi larvalarının popülasyon yoğunluğunu değerlendirmek için örnekleme yeri ve kanola çeşidine göre bitki materyallerinden seçilmiş, sayılmış ve kaydedilmiştir. Çalışmadan üç yıl sonra, zararlının popülasyon yoğunluğu, örnekleme yılı ve kanola çeşidinin her birinde değişiklik göstermiştir. 2007 yılında beş farklı kanola çeşidi ve kanola tarlasından toplam 348 adet lahana yaprak güvesi larvası atrap ile yakalanmıştır. Atrap tarafından tarafından yakalanan lahana yaprak güvesinin larvalarının en büyük ortalaması 15 Mayıs'ta 'Lycosmos' çeşidinde kaydedildi. 2008 yılında dört farklı kanola çeşidinde ve on bir kanola tarlasında toplam 1009 adet lahana yaprak güvesi larvası atrap ile yakalanmıştır. Atrap ile en yüksek ortalama yakalama 10 Nisan'da 'Elvis' (Atçana III) çeşidinde kaydedilirken, bunu 'Hunter' (Demirköprü I), 'Sarı' (Demirköprü I), 'Lycosmos' (Demirköprü II) izlemiştir. 2009 yılında kanola çeşidinde toplam 75 adet lahana yaprak güvesi larvası atrap ile yakalanmıştır. Atrap ile en fazla sayısı lahana yaprak güvesi larvası 22 Nisan'da yakalanmış, bunu 20 Mayıs takip etmiştir.Genel Yorum: üç yıl boyunca, atrap ile en yüksek sayıda DBM larvaları Mayıs ayında yakalanmış olup, bunu Nisan ayı takip etmiştir. Ayrıca atrap ile en fazla lahana yaprak güvesi larvası 'Lycosmos' çeşidinde yakalanmış, bunu 'Elvis' ve 'Sarı' çeşitleri izlemiştir.Çalışmanın Önemi ve Etkisi: Lahana yaprak güvesi Türkiye'deki Brassicaceae familyasına ait sebze ve yağlı tohum bitkilerinde önemli bir zararlıdır. Örnekleme süresince atrap ile en yüksek sayıda lahana yaprak güvesi larvası Mayıs ayında yakalanmış olup bunu Nisan ayı takip etmiştir. Ayrıca atrap ile en fazla sayıda lahana yaprak güvesi larvası 'Lycosmos' çeşidinde yakalanmış, bunu 'Elvis' ve 'Sarı' çeşitleri izlemiştir.

Anahtar Kelimeler:

lahana yaprak güvesi, Plutella xylostella, Kanola, Hatay

Evaluation of population density of diamondback moth (DBM), Plutella xylostella (L.) (Lepidoptera: Plutellidae) on different canola varieties in Hatay province

Aims: Evaluation of population density of the diamondback moth (DBM), Plutella xylostella (L.) (Lepidoptera: Plutellidae), on different canola varieties in Hatay province.Methods and Results: The study was conducted in 2007-2009 to evaluate population density of diamondback moth on different canola varieties in Hatay province. The study was carried out in six different canola 'Hydromel', 'Elvis', 'Sarı', 'Lycosmos', 'Hunter' and 'Sory' varieties. Samplings were done by using a 45-cm diameter sweep-net, taking 25 (back-forth) sweep samples per site. The DBM larvae were sorted out from plant materials, counted and recorded for each of the sampling locality and canola variety in order to evaluate population density of P. xylostella. After three years of the study, the population density of pest varied in each of the sampling year and variety of canola. In 2007, a total of 348 DBM larvae were caught by sweep-net on five different canola varieties and canola fields. The largest mean of DBM larvae catches by sweep-net were recorded on 15 May on variety of ‘Lycosmos’. In 2008, A total of 1009 DBM larvae were caught by sweep-net on four different canola varieties and eleven canola fields. The largest mean of catches by sweep-net were recorded on 10 April on variety of ‘Elvis’ (Atçana III), followed by variety of ‘Hunter’ (Demirköprü I), ‘Sarı’ (Demirköprü I), ‘Lycosmos’ (Demirköprü II). In 2009, a total of 75 DBM larvae were caught by sweep-net on canola variety. The largest number of DBM larvae catches by sweep-net were recorded on 22 April, followed by 20 May. Conclusions: The highest number of the DBM larvae were caught by sweep-net in May, following in April in three years. In addition, the highest number of the DBM larvae were caught by sweep-net on variety of ‘Lycosmos’, following by ‘Elvis’, and ‘Sarı’ cultivars.Significance and Impact of the Study: The diamondback moth is important pest of brassica vegetable and oilseed crops in Turkey. The highest number of the DBM larvae were caught by sweep-net in May, following in April during the sampling periods. In addition, the highest number of the DBM larvae were caught by sweep-net on variety of ‘Lycosmos’, following by ‘Elvis’, and ‘Sarı’ cultivars.

Keywords:

Diamondback moth, Plutella xylostella, Canola, Hatay province,

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