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.
birey bitki olarak saptanmıştır. B. planifrons larvalarının yeni oluşan tohumlarda beslenmesi sonucunda aspirde yüksek verim kaybına neden olduğu bu çalışma ile belirlenmiştir. Determination of the distribution and density of Seedhead weevil [Bangasternus planifrons (Brulle) (Coleoptera: Curculionidae) harmfull on safflower in Ankara province Anahtar Sözcükler: Ankara Aspir Bangasternus planifrons Kapsül hortumlu böceği Yaygınlık ABSTRACT This study was carried out to determine the distribution and density of the pest, Seedhead weevil (Bangasternus planifrons Brulle) in safflower (Carthamus tinctorius L.) fields in Ankara in the year of 2014 and 2015. The data obtained from the surveys and samplings conducted in Ayaş, Bala, Kalecik, Polatlı and Şereflikoçhisar districts, in which safflower is intensively grown, were evaluated, and B.
This study was conducted to survey the distribution and density of lucerne leaf beetle [(Gonioctena fornicata (Brüggemann, 1873) (Coleoptera: Chrysomelidae)] in alfalfa (Medicago sativa L.) cultivation areas in Bolu, Zonguldak and Bartın provinces between 2017 and 2019. It was determined that the prevalence of Gonioctena fornicata was 100% in three provinces where studies were conducted in 2017. It was observed that the rate of infestation of G. fornicata started at 2.24% in 2018, and rose to 44.82% in 2018. In 2019 infestation rate began at 1.48% and rose to 36.86%. It has been determined that the infestation that started with the end of March continued until the end of June. This study highlights the infestation time and distribution of G. fornicata in the provinces of the Western Black Sea Region, and can serve as a building block for further investigations of G. fornicata's distribution in the area.
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