Person: KUMRAL, NABİ ALPER
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KUMRAL
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NABİ ALPER
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Publication A laboratory study of the acaricidal, repellent and oviposition deterrent effects of three botanical oils on Tetranychus urticae (Koch, 1836) (Acari: Tetranychidae)(Ege Üniversitesi, 2020-04-25) Keskin, Gizem; Kumral, Nabi Alper; Kacar, Oya; Keskin, Gizem; KUMRAL, NABİ ALPER; KAÇAR, OYA; Bursa Uludağ Üniversitesi/Fen Bilimleri Enstitüsü/Entomoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Bitki Koruma Bölümü.; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; 0000-0001-9442-483X; A-1388-2019; AAG-7449-2021; KGA-9390-2024The biological activities of essential oil obtained from water distillation process of basil leaves [Ocimum basilicum L. (Lamiales: Lamiaceae)] cv Round Midnight and crude oil obtained from the cold-pressed process of chinaberry tree seeds [Melia azedarach L. (Sapindales: Meliaceae)] and a commercial neem oil product (Nimbecidine) [Azadirachta indica (A. Juss, 1830) (Sapindales: Meliaceae)] were assessed against two-spotted spider mites, Tetranychus urticae (Koch, 1836) (Atari: Tetranychidae) using a residual method on leaf disc under laboratory conditions at Bursa Uludag University during 2018-2019. The lethal concentrations (LC50 and LC90) of Nimbecidine, chinaberry and basil oils were estimated as 0.8 and 1.8 mg/L, 4.0 and 6.9%, 5.4 and 11.7%, respectively, 72 h after treatment. The lethal times (LT50 and LT90) of Nimbecidine (1 mg/L), chinaberry (6%) and the basil (8.4%) were 64 and 107 h, 41 and 73 h, 65 and 110 h, respectively. The females had a strong aversion to bean leaf surfaces sprayed with the sublethal concentrations of Nimbecidine (0.125-0.75 mg/L), chinaberry (0.75-3%) and basil (0.7-1.4%) oils. Significant decreases were recorded in the number of eggs laid on bean leaves sprayed with the sublethal concentrations for Nimbecidine (0.031-0.5 mg/L), chinaberry (0.75-3%) and the basil (1.4-5.6%) oils compared with unsprayed bean leaves. The study showed that the assessed concentrations of the oils obtained from the basil and chinaberry compared to the commercial botanical product (Nimbecidine) have similar biological effects on T. urticae.Publication Toxic effects of some acaricides on Aceria oleae (Nalepa, 1900) (Acari: Eriophyidae) and its predator Neoseiulus californicus (McGregor, 1954) (Acari: Phytoseiidae) under laboratory conditions(Ege Üniversitesi, 2021-01-01) Kumral, Nabi Alper; Çobanoğlu, Sultan; Göksel, Pınar Hephızlı; Aksoy, Anıl; KUMRAL, NABİ ALPER; Göksel, Pınar Hephızlı; Aksoy, Anıl; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Bitki Koruma Bölümü.; Bursa Uludağ Üniversitesi/Fen Bilimleri Enstitüsü/Entomoloji Anabilim Dalı.; 0000-0001-9442-483X; 0000-0002-1120-3925; 0000-0002-1025-2880; A-1388-2019; FBZ-1149-2022; CBB-0902-2022Olive bud mite, Aceria oleae (Nalepa, 1900) (Acari: Eriophyidae) is one of the key pests that regularly needs control with acaricides in olive orchards of Bursa Province, Turkey. For the chemical control of A. oleae, it is critical the use of acaricides does not reduce the survival and fecundity of its natural enemies. The toxic effects of three concentrations of seven acaricides were assessed against both A. oleae and its predator Neoseiulus californicus (McGregor, 1954) (Acari: Phytoseiidae) using a residual method under controlled conditions at Bursa Uludag University during 2020-2021. The highest recommended concentrations of acequinocyl, azadirachtin, fenbutatin oxide, milbemectin, pyridaben, spirodiclofen and sulfur killed A. oleae adults with rates varying from 80 to 100%. Two concentrations of milbemectin, pyridaben and sulfur showed high mortality rates. Nevertheless, highest recommended concentrations of acequinocyl, pyridaben, spirodiclofen and sulfur were found to be highly toxic to N. californicus adults with rates varied from 82 to 100%. The high mortalities for mobile immature stages and reducing in the fecundity of N. californicus occurred by highest recommended concentrations of all tested acaricides. Based on the scale recommended by the International Organization for Biological Control, some sublethal concentrations of fenbutatin oxide, spirodiclofen and sulfur were found to be slightly harmful to both mature and immature of N. californicus.Publication Effect of washing method on the reduction of insecticide residues and quality characteristics of sweet cherry fruits(Entomological Society Turkey, 2024) Hazarhun, Gülden; Kumral, Nabi Alper; Gümül, Burcu; Kolcu, Ayşenur; Ertaş, Simge; KUMRAL, NABİ ALPER; Ertaş, Simge; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Bitki Koruma Bölümü; Bursa Uludağ Üniversitesi/Fen Bilimleri Enstitüsü/Bahçe Bitkileri Bölümü; 0000-0001-9442-483X; 0000-0002-4540-6915; A-1388-2019; KLA-8587-2024Sweet cherry trees were sprayed with 5 insecticides (acetamiprid, dimethoate, lambda-cyhalothrin, malathion, tau-fluvalinate) at the recommended field doses in this study. Fruits were harvested after the pre-harvested interval for each pesticide completed and then they were immersed into tap water and three different washing solutions (with three different concentrations) for 3 minutes (at 20(o)C). Insecticide concentrations were detected with a multi-residual analysis method using LC-MS/MS in Bursa Uludag University in 2022. Following the treatments, changes in the quality characteristics of fruits were also investigated by quality (colour, texture and fruit cracking rate, water-soluble dry matter) and sensory analysis (fruit and stem colour, firmness, appearance, general acceptability). The results revealed that washing method with tap water during 3 min decreased insecticide residue level by 7-45% depending on insecticide active compound. Higher reduction rates were observed by washing with citric acid (10%), sodium bicarbonate (2.5%) and sodium hydroxide (0.5%). But significant reductions were detected only in lambda-cyhalothrin and malathion residues when compared with the newly harvested fruit samples. Processing factors (PF) of all washing methods were generally lower than 1 except for three treatments. PF values showed variations depending on the type of washing solution and the active compound of insecticides. Although washing with citric acid (10%), sodium bicarbonate (2.5%) and sodium hydroxide (0.5%) solutions caused reduction in residue levels, their negative effects on the quality and sensory characteristics of the fruits cannot be ruled out.Publication The toxic effects of some acaricides on the tomato russet mite and its predator amblyseius swirskii athias-henriot, 1962 (Acari: Phytoseiidae)(Ege Üniversitesi, 2023-01-01) Kolcu, Ayşenur; Kumral, Nabi Alper; Kolcu, Ayşenur; KUMRAL, NABİ ALPER; Bursa Uludağ Üniversitesi/Fen Bilimleri Enstitüsü/Bitki Koruma Anabilim Dalı; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Bitki Koruma Bölümü; 0000-0001-9442-483X; FII-8215-2022; A-1388-2019The tomato russet mite, Aculops lycopersici(Massee, 1937) (Acari: Eriophyidae) is a common pest of tomatoes. The predatory mite, Amblyseius swirskiiAthias-Henriot, 1962 (Acari: Phytoseiidae), can control A. lycopersici populations. To integrate biological and chemical control of A. lycopersici, side effects of the lethal concentrations of acaricides, as a predator, on A. swirskii should be considered. The lethal concentrations of 14 acaricides for A. lycopersici were determined under laboratory conditions at Bursa Uludag University during 2017-2018. To understand the toxic impacts of the acaricides on juveniles and females of A. swirskii, the LC99 values for A. lycopersici of each acaricide were applied to A. swirskii. The reproduction reduction effects of the LC99 values were also assessed. Quite low concentrations of abamectin, milbemectin, pyridaben, azadirachtin and sulphur were found to be toxic for A. lycopersici. Based on the side effect scale, the LC99 values of abamectin, acequinocyl, bifenazate, fenproximate, fenbutatin oxide, hexythiazox, milbemectin and sulphur that killed A. lycopersiciwere found to be slightly toxic to both females and juveniles of A. swirskii. The results of this comparative toxicological study have showed that more field studies should be conducted to evaluate the effectiveness of using low concentrations of acaricides with A. swirskii in combination for controlling A. lycopersici.