Determination of population density and infestation rates of peach twig borer, Anarsia lineatella Zeller (Lepidoptera: Gelechiidae) on early apricot orchards in Mersin province


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SEFEROĞLU İ. A., DEMİREL N.

Mustafa Kemal Üniversitesi tarım bilimleri dergisi (online), cilt.25, sa.2, ss.237-242, 2020 (Hakemli Dergi) identifier

Özet

Aims: Peach twig borer (PTB), Anarsia lineatella Zeller (Lepidoptera:Gelechiidae), is one of the important pests of apricot in Turkey. The studywas conducted in 2013-2014 to determine the population density andinfestation rates of PTB on early apricot orchards in Anamur district ofMersin province in Turkey.Methods and Results: The study was conducted in five early apricotorchards of the villages Kalınören (Trintina), Ören (Trintina), Cerenler I(Nimfa), Cerenler II (Trintina) and İskele (Trintina) of Anamur district. Thepeach twig borer of pheromone (E-5 Decenyl acetate 5,0 mg/capsul E5Decenol 1,0 mg/capsul) was used in Econex polillero trap + DDVPimpregnated tablet. Each of sampled orchard contained one pheromonetrap. The traps were hanged at South-East direction of the trees about 1.5-2 m above ground, checked weekly and the caught adults were countedand cleaned.. Randomly chosen 20 trees’ twigs (20/tree) and fruits(50/tree) were checked, apart from the trap hanging trees, in order todetermine the infestation rates. After two years of the study, thepopulation density of pest varied between each sampling year. In the firstyear, a total of 46 PTB adults were caught by five pheromone traps at fiveearly apricot orchards. The first adults were caught on 14 April, and thehighest number of catches was on 12 May. The highest number of PTBadults was in May with 67.4%, followed by April with 32.6%. In the secondyear, a total of 66 PTB adults were caught by five pheromone traps at fiveearly apricot orchards. The first adults were caught on 13 April, and thehighest number of catches was on 11 May. The highest number of PTBadults was in May with 68.2%, followed by in April with 31.8%. It wasobserved that PTB had one generation and the pest did not cause anysignificant infestation on early apricot varieties.Conclusions: The highest number of the PTB adults were caught bypheromone traps in May, following in April in both years. The pest had onegenaration and not cause any significant infestation on early apricotvarieties.Significance and Impact of the Study: The pests were recoved bypheromone traps at all early apricot orchards and the highest number ofadults caught in May, following in April. The pest had one genaration andnot cause any significant infestation on early apricot varieties.