Huseyin Cetin

Publications (37) View all

• Article: Effect of kaolin particle film treatment on winterform oviposition of the pear psyllaCacopsylla pyri

  F. Erler, H. Cetin
  [show abstract] [hide abstract]
  ABSTRACT: Laboratory and field experiments were conducted to evaluate the efficacy of kaolin particle film on winterform oviposition of the pear psyllacacopsyllapyri (L.) (Hemiptera: Psyllidae). Kaolin particle film (kpf) treatment significantly reduced winterform oviposition rates in both choice and no-choice tests in the laboratory. In choice tests, overwintered females laid 11 times more eggs on water-treated dormant shoots than on shoots treated with particle film, within 21 days after treatment. In no-choice tests, kpf treatment also significantly reduced egg numbers compared with water-treated controls. The results of field trials carried out in southwestern Turkey (Antalya) during the late winter — early spring of 2004 and 2005 showed very good efficacy of kpf treatment in comparison with water-treated control. Kpf treatment (just before egg laying, during the dormant-postdormant period) delayed egg-laying activity in overwintered females for up to 3 weeks from the beginning of the experiment and continued to suppress oviposition significantly in comparison with watertreated control up to 4 weeks. Our overall results suggest that kpf treatment may be useful in pear psylla management programs by decreasing winterform oviposition, particularly in conjunction with other control tactics.
  Phytoparasitica 04/2012; 35(5):466-473. · 0.89 Impact Factor
• Article: Laboratory and field evaluations of some botanical pesticides against the cedar leaf moth, Acleris undulana

  Fedai Erler, Huseyin Cetin, Halil Saribasak, Ayhan Serttas
  [show abstract] [hide abstract]
  ABSTRACT: The cedar leaf moth (CLM), Acleris undulana Walsingham, has recently become an important pest in the cedar forests in southwestern Turkey. Control has focussed on the use of synthetic chemical pesticides, with little research having been conducted on alternative control methods. In this study, four botanical pesticides (two commercial neem products, Neemazal-T/S® and Greeneem® oil, and two hot water plant extracts, Origanum onites L. and Pimpinella anisum L.) were evaluated for their effects against young (first–second) and older (third–fifth) instar larvae of CLM under laboratory and field conditions. The results of larval dip bioassay in the laboratory showed that all the botanical pesticides tested had significant larvicidal activity against both young and older instars of CLM compared to the water-treated control. Of the botanical pesticides tested, Neemazal was the most larvicidal botanical, causing mortalities ranging from 84 to 100%, the least effective was the P. anisum extract, but at high concentrations this extract still caused significant mortality. Results from field trials also revealed that the botanical pesticides had larvicidal activity against CLM. Neemazal was the most larvicidal botanical, followed by Greeneem oil then by O. onites and finally by P. anisum. Our overall results suggest that all the botanical pesticides tested are promising as larvicides against CLM, and may provide an alternative control method that is more compatible with Integrated Pest Management programs than the use of synthetic chemical pesticides. Keywords Acleris undulana -Cedar leaf moth-Botanical extracts-Larvicidal activity-Neem products
  Journal of Pest Science 04/2012; 83(3):265-272. · 1.51 Impact Factor
• Article: Evaluation of some selective insecticides and their combinations with summer oil for the control of the pear psyllaCacopsylla pyri

  F. Erler, H. Cetin
  [show abstract] [hide abstract]
  ABSTRACT: A field trial was carried out to evaluate the efficacy of several selective insecticides for the control of pear psyllaCacopsylla pyri (L.) (Hemiptera: Psyllidae) in two successive years. Three insect growth regulators (IGRs) — diflubenzuron, pyriproxyfen and teflubenzuron, and an amin-hydrazine derivative — amitraz, were evaluated singly and in combination with summer oil (1%). All insecticides were applied at recommended label rates in both years. When compared with the untreated control, all insecticides alone and their combinations with summer oil, except for pyriproxyfen alone, provided control of young (1st and 2nd instars) nymphs. However, combined applications of these insecticides and summer oil were more effective than either insecticide alone for controlling the egg and young nymph stages of the pest. The products were less effective against older (3rd–5th instars) nymphs, even in combination with summer oil, and failed to suppress the population of older nymphs. Adding oil to sprays also delayed oviposition by winterform and summerform females. With the exception of oil with amitraz, combinations of insecticides with summer oil did not cause any phytotoxicity during the study.
  Phytoparasitica 04/2012; 33(2):169-176. · 0.89 Impact Factor
• Article: Larvicidal activity of some secondary lichen metabolites against the mosquito Culiseta longiareolata Macquart (Diptera: Culicidae).

  H Cetin, O Tufan-Cetin, A O Turk, T Tay, M Candan, A Yanikoglu, H Sumbul
  [show abstract] [hide abstract]
  ABSTRACT: The larvicidal activity of some lichen metabolites, (+)-usnic acid, atranorin, 3-hydroxyphysodic acid and gyrophoric acid, against the second and third instar larvae of the mosquito Culiseta longiareolata were studied. All metabolites caused high larvicidal activities. When metabolites were compared on the basis of their LC(50) values, the order of increasing toxicity was as follows: gyrophoric acid (0.41 ppm) > (+)-usnic acid (0.48 ppm) > atranorin (0.52 ppm) > 3-hydroxyphysodic acid (0.97 ppm). However, when LC(90) values were compared, the order of toxicity was (+)-usnic acid (1.54 ppm) > gyrophoric acid (1.93 ppm) > 3-hydroxyphysodic acid (4.33 ppm) > atranorin (5.63 ppm). In conclusion, our results found that lichen secondary metabolites may have a promising role as potential larvicides.
  Natural product research 01/2011; 26(4):350-5. · 1.01 Impact Factor
• Article: Acaricidal activity of Satureja thymbra L. essential oil and its major components, carvacrol and gamma-terpinene against adult Hyalomma marginatum (Acari: Ixodidae).

  H Cetin, J E Cilek, E Oz, L Aydin, O Deveci, A Yanikoglu
  [show abstract] [hide abstract]
  ABSTRACT: The acaricidal activity of a volatile essential oil hydrodistillate of Satureja thymbra L. (Lamiaceae) and its major constituents, carvacrol and gamma-terpinene, were evaluated against field-collected unfed adult Hyalomma marginatum. The distillate was tested against this tick species at 5, 10, 20, and 40 microL/L while the two major components were each tested at 10 microL/L. Generally, tick mortality to the S. thymbra distillate increased with concentration and exposure time. Ticks exposed to vapors from cotton wicks containing at least 40 microL/L resulted in complete (100%) mortality at 3h. The lower concentrations provided >or=90% mortality at 3h post treatment with complete mortality at 24h. Knockdown was observed only in the carvacrol and gamma-terpinene treatments. Ticks exposed to carvacrol-treated wicks produced >93% knockdown at 3h but at 24h approximately 57% were dead. The gamma-terpinene treatment produced >or=90% knockdown at 105 min through 3h but at 24h only about 87% of the ticks were dead.
  Veterinary Parasitology 03/2010; 170(3-4):287-90. · 2.58 Impact Factor