Determination of the distribution and density of Seedhead weevil [Bangasternus

Cenk Yücel; Aydemir Barış; Sevgi Ayten

Determination of the distribution and density of Seedhead weevil [Bangasternus

2019

Cenk Yücel | Aydemir Barış | Sevgi Ayten

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 of2014 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.planifrons was determined in all of the districts in 2014, and the infestation ratios were 4.17, 23.05,1.16, 6.11 and 1.16 %, respectively. In 2015, the pest was detected in all districts, except Ayaş, and theinfestation rates for Bala, Kalecik, Polatlı and Şereflikoçhisar were 24.06, 0.99, 43.57 and 1.75 %,respectively. The average numbers of adults in safflower fields of Ayaş, Bala, Kalecik, Polatlı andŞereflikoçhisar were determined as 4.67, 9.34, 3.38, 6.64 and 3.44 adult plant-1, respectively, in 2014.For the districts in the same order except Ayaş in 2015, the average numbers in the same places were8.08, 2.75, 6.56 and 2.33 mature infected plants, respectively. As a result of this study, it wasdetermined that B. planifrons causes high yield loss in safflower due to feeding of the larvae in newlyformed seeds.

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