Bangasternus planifrons (Brulle, 1832) (Coleoptera: Curculionidae)’un farklı insektisitler ile mücadelesinin aspirde verim ve kaliteye etkisi

Dünya çapında yetiştiriciliği yapılan aspir (Carthamus tinctorius L.) (Asterales: Asteraceae) üretimi böcekler gibi farklı abiyotik ve biyotik faktörlerden önemli ölçüde etkilenmektedir. Aspir üretimi sırasında zararlıları kontrol altına almak için farklı insektisitler uygulanmaktadır. İnsektisitlerin uygulanması, zararlılarla birlikte bitkileri de etkileyebilir. Bu çalışma Bangasternus planifrons (Brulle, 1882) (Coleoptera: Curculionidae) zararlısına karşı Balcı aspir çeşidinde dört farklı insektisit kullanılarak Ankara ve Eskişehir illerinde 2016 yılında yapılmıştır. Çalışma sonucunda zararlı popülasyonu insektisit uygulamasının 14. günü itibariyle %73-91 etki oranında azalmış ve verimde kontrol grubuna göre %60.43-123.18 artış sağlanmıştır. Zararlının beslenmesi sonucunda tohum kalitesinde bozulma, yağ oranı kaybı ve 1000 tane ağırlığı kaybı meydana gelmiştir. Zararlıların kontrolü ve zararlı popülasyonunun azaltılması yoluyla kalite ve verimde artış sağlanmıştır. Uygulama yapılan alanlardan elde edilen verilere yapılan regresyon analizi sonucunda zararlının ergin sayısı ile verim, yağ oranı ve 1000 tane ağırlığında da sırasıyla %83.73, %75.83 ve %75.44 oranında negatif ilişki belirlenmiştir. Sonuç olarak B. planifrons’un aspir bitkisinde zararı ile verimde, yağ oranında ve 1000 tane ağırlığında kayba neden olan önemli bir etken olduğu, zararlıya karşı yapılacak uygun bir insektisit uygulaması ile oluşan zararın önlenebileceği sonucuna varılmıştır.

Effects of harmful Bangasternus planifrons (Brulle, 1832) (Coleoptera: Curculionidae) control with different insecticides on yield and quality in safflower

The production of safflower (Carthamus tinctorius L.) (Asterales: Asteraceae), which is cultivated worldwide, is significantly affected by different abiotic and biotic factors such as insects. Different insecticides have been applied during safflower production to control pests. The application of insecticides can affect plants as well as pests. This study was carried out in Ankara and Eskisehir provinces in 2016 using four different insecticides against the Bangasternus planifrons (Brulle, 1882) (Coleoptera: Curculionidae) pest in Balcı safflower variety. The pest population was 73-91% effectively suppressed as of the 14th day after the application of insecticides, and the yield increased by 60.43-123.18% when compared to the control group. Deterioration of seed quality, loss of oil ratio, and loss of 1000 grain weight occurred as a result of damage occurred by pest feeding. Through control of pests and reduction of pest population, an increase in quality and productivity was achieved. Regression analysis made on the data obtained from the application areas determined that there were 83.73%, 75.83%, and 75.44% negative relationship between the number of adults of the pest and the yield, oil rate, and 1000-grain weight, respectively. In conclusion, B. planifrons is an important factor causing a loss in yield, oil rate, and loss of 1000-grain weight in safflower plant. The damage caused by the pest can be prevented by the application of a suitable insecticide.

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