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Öğe Damla sulama sistemi ile uygulanan gübreleme programının sera domatesinde gelişmeye ve besin maddesi alımına etkisi(Ege Üniversitesi, 1991) Çolakoğlu, Habil; Pekcan, TulinAraştırma Antalya ili kumluca ilçesinde üretici serasında damla sulama sistemi ile gübrelenen domates bitkisiyle yapıldı. Denemenin kurulacağı seranın iki deriliğinden alınan toprak örneklerinin ve damla sulamada kullanılacak suyun analizleri yapıldı. Seraya taban gübre olarak 30 kg/da DAP, toprak pH'sını düşürmek için 30 kg/da kükürt (wp) ve organik gübre olarak 4 ton hayvan gübresi verildi. Denemede domates çeşidi olarak Cleopata (F1)kullanıldı. Damla sulamada kullanılan gübreler NH4NO3 %26 N üre %46 N, H3PO4 %85'lik P2O5, KNO3 %46 K2O, MgSO4.7H2O %16 MgO; ZnSO4.7H2O %22,6 ZnO'dur. Cleopatra (F1) domates tohumları %75 torf+%25 dere kumu karışım harcına 26.9.1989 tarihinde ekildi. 6.10.1989 tarihinde %50 torf+%25 dere kumu +%25 sera toprağı karışım harcını içeren fide kerelerine şaşırtıldı ve 29.10.1989 tarihinde seraya dikildi. Bitkinin vejetasyon dönemi boyunca 8 defa bitki örneği alındı. Bunlar laboratuara getirilerek sap, yaprak ve meyve olarak ayrıldı. Laboratuara getirilen örneklerin yaş ve kuru ağırlıkları alındıktan sonra KM miktarları belirlendi. Kurutulan örneklerde toplam N, P, K, Ca, Mg, Na, Fe, Cu, Zn, Mn miktarları bulundu. Damla sulama sistemi ile yapılan bu çalışmada bitkinin tüm gelişme dönemi boyunca topraktan kaldırılmış olduğu makro ve mikro besin maddeleri dekara kg ve g olarak tablo1 de verildiği gibi bulunmuştur. Domates bitkisinin kuru madde birikimine göre en kritik gelişme dönemi olarak 78-127. günler arası bulunmuştur. Genel olarak bu dönem içinde bitki besin maddeleri diğer aylara göre daha fazla kaldırılmaktadır. Bitkinin kritik gelişme döneminde verilen besin maddesi miktarı arttırılmalıdır. Sıcaklığın Ocak-Şubat aylarında çok düşmesi sonucu kuru madde miktarında azalma ve bunun sonucunda da üründe azalma meydana gelmiş ve 5554 kg/da ürün elde edilmiştir.Öğe Essential Plant Nutrients and Heavy Metals Concentrations of Some Medicinal and Aromatic Plants(Ankara Univ, Fac Agr, 2014) Esetlili, Bihter Colak; Pekcan, Tulin; Cobanoglu, Ozgur; Aydogdu, Erol; Turan, Sevim; Anac, DilekIn Turkey, the majority of medicinal plants at the selling points are wildly harvested. Therefore, no control exists during their growth and development. The public awareness on effects of environmental pollution in this regard especially with respect to heavy metals in the herbs is increasing. With this objective, medicinal and aromatic plants were collected from herbalists in different, densely populated districts of Izmir Municipality. The concentrations of some essential plant nutrient elements (N, P, K, Ca, Mg, Na, Fe, Mn, Cu, Zn, B, and Mo) and toxic heavy metals (Co, Cd, Cr, Ni, and Pb) and Al were measured. Results showed that herbs are rich in the investigated mineral elements; however, some of the heavy metals are found to be at concentrations above the reported critical levels.Öğe Natural Radionuclides and Heavy Metal Contents in the Olive (Olea europaea L.) Groves of Northwestern Anatolia(Univ Namik Kemal, 2019) Colak Esetlili, Bihter; Pekcan, Tulin; Aydogdu, Erol; Turan, Sevim; Anac, DilekThe aim of this study is to examine the content of heavy metal (Cd, Pb, Ni, Cr, Al) and the natural radionuclide (U-238, Th-232, K-40) content of the olive groves around the highway from Aliaga to Ezine. in general, findings show that total heavy metal contents are more in the subsurface soils. in this regard, total Ni contents of the soils changed between 11-69 mg/kg. It is considered the only threatening heavy metal which exceeded 30 mg/kg critical level especially in the soils of the olive groves in Aliaga Soma, Ayvalik, Edremit and Ezine. Bergama region differed in this regard. The highest of total Pb, Cr and Cd contents in the soils of Aliaga region were found 44.59 mg/kg, 60 mg/kg and 0.81 mg/kg, respectively. These findings are found very close to the reference limit values (50, 100 and 1 mg/kg) reported by different scientists. Natural radioactivities of Ra-226, Th-232 and K-40 in the soils were also measured and found 37.45 and 410 Bq/kg respectively which were slightly above the cited limit values (Ra-226:35 Bq/kg, Th-232:30Bq/kg ve K-40:400 Bg/kg). Results in relation to olive leaves indicated that trees were not threatened by the heavy metals in the soils, only in some cases Cr (0.19-0.99 mg/kg) was found over the limit value (0.60 mg/kg). It could be concluded that this risky region with high contamination potential should be studied periodically before it is too late..Öğe Optimizing Olive Production: The Role of Foliar Fertilizers in Boosting Yield and Quality(MDPI, 2024) Colak Esetlili, Bihter; Pekcan, Tulin; Bayiz, Onur; Karaman, Hanife Telli; Ayata, Murat; Sari, GokhanTo enhance yield and produce high-quality olive products, it is crucial to implement accurate and balanced fertilization programs. Like other crops, olive trees require the application of specific macro and micronutrients in addition to basic fertilization. This study aimed to evaluate the effects of foliar fertilizer applications containing K as well as N, K, Ca, and B, in addition to basic fertilization, on the yield and quality parameters of the Gemlik olive (Olea europaea L. cv. Gemlik) variety, known for its high economic value and use in black table olives and oil production, during two consecutive seasons in 2021-2022. The research evaluated the effects on olive fruit yield, fruit nutrient content (N, Ca, P, Na, K, Mg, Zn, Fe, Cu, and Mn), oil yield, and quality. In addition to traditional basic fertilization (NPK fertilizer), foliar fertilizers containing K as well as N, K, Ca, and B nutrients were applied before flowering and after fruit set. These applications were organized using a randomized block design with three replicates, each consisting of three trees. The results showed that foliar fertilizer applications, in addition to basic fertilization, had a significant impact on the yield and quality parameters. Specifically, foliar K applications positively affected olive yield in the second year. Moreover, foliar fertilizer applications improved the fruit nutrient content, oil quality (K-232, K-270, peroxide, acidity, and total phenol), and oil composition (%). Therefore, it is recommended that foliar fertilizers are applied during similar periods under similar conditions. However, ensuring the continuity of an optimal fertilization management plan is crucial for olive, as it is a perennial plant.
