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Öğe Changes in Nutrient Concentrations of Maize (Zea mays var. intendata) Leaves under Potassium and Magnesium Applications in Central Anatolia(ANKARA UNIV, FAC AGR, 2016) Ertiftik, Hakan; Zengin, MehmetThis research was carried out to determine the effects of potassium (0, 40, 80, 120 kg K2O ha(-1); as potassium sulfate; 50% K2O) and magnesium (0, 20, 40, 60 kg MgO ha(-1); as magnesium sulfate; 16% MgO) applied to the soil, either separately or in various combinations, on some nutrients (N, P, K, Ca, Mg, Fe, Zn) in maize leaves grown under field conditions in semi-arid Central Anatolia in Turkey in 2009 and 2010. The study was designed as a factorial arrangement in randomized block design with four replications. After soil analysis of the study areas, K and Mg-fertilizers were applied at sowing. The results showed that the K applications alone could increase the nutrient concentrations of the leaves, and synergic relations were found between K and P, Fe, or Zn. Synergic relations were also found between Mg and P or Fe. Generally, combined applications of K and Mg resulted in higher nutrient concentrations in the leaves by ameliorating the antagonistic effect of poor soil K-Ca-Mg ionic balances. The leaf nutrient concentrations were generally higher in the first year (2009) than that of the experiment than in the second year (2010).Öğe Effect of nitric oxide on the tolerance mechanism of bread wheat genotypes under salinity stress(ELSEVIER SCIENCE BV, 2014) Hakki, Erdogan Esref; Hamurcu, Mehmet; Demiral, Tijen; Avsaroglu, Zuhal Zeynep; Calik, Merve; Zengin, Mehmet; Topal, Ali[Abstract not Available]Öğe EFFECTS OF DIFFERENT TILLAGE AND FALLOW METHODS ON WHEAT YIELD AND SOIL QUALITY(NATL AGRICULTURAL RESEARCH & DEVELOPMENT INST, 2013) Zengin, Mehmet; Ocakoglu, FarukThe study was conducted to determine the effects of different tillage strip and fallow methods on wheat yield, and yield components, and loam soil quality in semiarid Central Anatolia region in 2010 and 2011. Three plowing and fallow methods, the minimum tillage/stubble fallow, plowing/stubble fallow and plowing/non-stubble fallow methods were implemented, and bread wheat (Triticum aestivum cv. Ekiz) was planted. The plowing/stubble fallow method was more effective than the other methods in terms of high grain yield and yield components. This method led to a yield increase of similar to 50% in both years when compared to the minimum tillage/stubble fallow method. Although both wheat yield and soil quality were positively affected by stubble fallow method, the several farming problems, such as, ignorance of strip farming, difficulty of cultivating in a strip, and leaving a strip blank, and decreased annual net income due to the fallowed strips, may prevent the use of this conservation practice.Öğe EFFECTS OF FOLIAR AND SOIL APPLICATIONS OF DIFFERENT MANGANESE FERTILIZERS ON YIELD AND NET RETURN OF BEAN(TAYLOR & FRANCIS INC, 2014) Ozbahce, Aynur; Zengin, MehmetThis study was carried out in order to determine the effect of various manganese fertilizers [manganese sulfate (MnSO4.3H(2)O) (MS), 27% manganese (Mn) and manganese ethylenediaminetetraacetic acid (Mn-EDTA) (ME), 12% Mn], their doses (0, 6, 9, 12mg Mn kg(-1) for the soil and 0, 0.2, 0.3, 0.4% for the leaf) on yield and net return of dwarf bean. Field experiments were conducted in the randomized blocks split plot design with four replications under Konya ecological conditions in Turkey. Soil applications were made on bands as a single application at sowing whereas foliar applications (FA) were made at two times. Results of the field experiments showed the highest bean yields were significantly obtained by the fertilizer of ME-FA sprayed (243.80 and 257.74kg da(-1)). For both years, the lowest yields were obtained by the MS-SA applications (166.97 and 180.60kg da(-1)). The maximum net income was US $104.16 da(-1) and US $156.06 da(-1) by years.Öğe Effects of Manganese Fertilizers on Yield and Yield Components of Dwarf Dry Bean(Taylor & Francis Inc, 2010) Özbahçe, Aynur; Zengin, MehmetVarious manganese fertilizers [manganese sulfate (MnSO3H?O (MS), 27% manganese (Mn); and Mn-ethylenediaminetetraacetic acid (EDTA) (ME), 12% Mn) and their doses (0, 6, 9, 12 mg Mn kg and 0, 0.2, 0.3, 0.4%) were applied to soil and sprayed on leaves to study the variations in yield and yield components (plant height, number of pod per plant, number of grain per pod, thousand grains weight, and protein) of dwarf bean (Phaseolus vulgaris L. cu 'Akman-98') grown under Konya (Turkey) ecological conditions during two consecutive growing seasons in 2006 and 2007. Field experiments were conducted in randomized block split plot design with four replications. All soil applications were made on bands as a single application at sowing whereas foliar applications were made in two sprays on the 25th and 35th days after seed emergence. According to the results, foliar application of ME resulted in better yield and yield components than the MS application and all types of soil applications. The highest grain yields were obtained by the 0.2% of ME sprayed on the leaves in the first year (2783.4 kg ha¹) and that of 0.3% of ME also sprayed onto the leaves in the second year (3092.1 kg ha).Öğe The effects of potassium on the yield and fruit quality components of stick tomato(KOREAN SOC HORTICULTURAL SCIENCE, 2013) Colpan, Efnan; Zengin, Mehmet; Ozbahce, AynurThis research was performed to determine the effects of potassium applied on soil to increase dose on the yield and yield components of stick tomato (Lycopersicon esculentum L. var. AimAYek) grown in greenhouse conditions in the Antalya Province in 2010. In this experiment, the AimAYek fresh tomato variety commonly grown in the Mediterranean region was tested with applications of 0, 40, 80, 120, and 160 kg K2O/ha. According to the results, the yield was greatest (195.7 Mt center dot ha (-1)) with 120 kg K2O/ha application. The effects of potassium application on tomato yield and yield components were statistically significant (P < 0.01 and P < 0.05). Depending on the application dose, plant stem diameter ranged from 14.22 to 14.99 mm, plant length 173.05 to 181.69 cm, fruit diameter 70.33 to 73.84 mm, fruit number per plant 29.20 to 34.57, fruit weight 160.45 to 185.63 g, penetration resistance 2.45 to 2.99 kg center dot cm (-2), pH 5.10 to 5.20 and sugar content 3.67 to 3.97 A degrees Brix. In addition, the leaf N/K ratio also affected the tomato yield. Significant correlations were found among the macro and micronutrients of the leaf, yield, and yield components.Öğe Effects of potassium, magnesium, and sulphur containing fertilizers on yield and quality of sugar beets (Beta vulgaris L.)(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2009) Zengin, Mehmet; Gokmen, Fatma; Yazici, M. Atilla; Gezgin, SaitEffects of potassium (K), magnesium (Mg), and sulphur (S) containing fertilizers on root yield, refined sugar yield, and K, Mg, and S concentrations of leaf of sugar beet (Beta vulgaris L.) were studied on 3 different locations in Konya province, namely Kuzucu, Karaarslan, and Alakova, in 2004, 2005, and 2006. In the trails, a uniform diammonium phosphate (DAP) + urea application was used as the control treatment, while potassium sulphate and Mg containing Kalimagnesia, were applied at varying rate combinations. Compared to the control treatment (DAP + urea), all fertilizer treatments containing K, Mg, and S increased root yield in the Kuzucu and Alakova locations, while in the Karararslan location only potassium sulphate treatment improved root yield. The Kalimagnesia fertilizer containing all 3 nutrients, namely K, Mg, and S, enhanced root yield by 42% and 39% in the Kuzucu and Alakova locations, respectively. But, this yield-stimulating effect of the Kalimagnesia fertilizer was rate-dependent. Kalimagnesia was also effective in improving the sugar content of the root, while the amino-N levels were not consistently affected by the fertilizer treatments. Despite increases in the leaf concentrations of K, Mg, and S by the tested fertilizers, the changes in the leaf concentrations of these nutrients could not fully explain the increases in root yields. In the discussion of the results, the possible role of basic cation saturation ratios of soils was also taken into consideration. The results indicate that a fertilizer treatment including 81 kg K(2)O ha(-1), 27 kg Mg ha(-1), and 46 kg S ha(-1) may be recommendable in fertilization of sugar beets, together with regular nitrogen and phosphorus applications, under similar conditions, in order to achieve a balanced mineral nutrition and sustain better root and sugar yields.Öğe Gibberellik Asit ve Çinko Uygulamalarının Marulun Verim ve Verim Unsurlarına Etkileri(Selçuk Üniversitesi, 2018) Kaya, Yağmur; Zengin, Mehmet; Gökmen Yılmaz, Fatma; Gezgin, SaitBu çalışmada artan dozlarda toprağa çinko sülfat (0, 1, 2 ve 3 kg ZnSO4-ÇS da-1 ) ve yaprağa gibberellik asit (0, 10, 50 ve 250 mg GA3 L -1 ) uygulamalarının sera koşullarında çinko (Zn) noksanlığına sahip bir toprakta yetiştirilen marul bitkisinin verim ve verim unsurlarına etkileri araştırılmıştır. Araştırma sonuçlarına göre en yüksek verim 3 kg ÇS da-1 uygulamasında, yaprakta en yüksek N, P, K 250 mg GA3 L -1 uygulamasında, en yüksek Zn içeriği ise 50 mg GA3 L -1 uygulamasından elde edilmiştir. Genellikle toprağa 3 kg ÇS da-1 ile yaprağa 50 mg GA3 L -1 ’in birlikte uygulanması, bunların ayrı ayrı uygulanmalarına göre bitkinin verim ve verim parametrelerini önemli derecede yükseltmiştir. Sadece ÇS dozlarının söz konusu parametrelere etkileri, sadece GA3 dozlarının etkilerinden daha yüksek bulunmuştur. Diğer taraftan, yaprağın N, P, K kapsamına 3 kg ÇS da-1 ile 250 mg GA3 L -1 ’in birlikte uygulanmasının etkileri daha yüksek iken, Zn konsantrasyonuna 3 kg ÇS da-1 ile 50 mg GA3 L -1 ’in birlikte uygulanmasının etkileri daha yüksek çıkmıştır. Ayrıca yaprağın Zn konsantrasyonu sadece ÇS uygulamasıyla kontrole (33,14 mg kg-1 ) göre %84 artarken (61,10 mg kg-1 ), sadece GA3 uygulaması ile %45 oranında artmıştır. Yaprağın Zn konsantrasyonunda en yüksek artış (%123) 3 kg ÇS da-1 ile birlikte 50 mg GA3 L -1 uygulamasından elde edilmiştir.Öğe IDENTIFICATION OF RADICAL STRUCTURE IN 2,4-DINITROCHLOROBENZENE SINGLE CRYSTAL BY EPR(EDITURA ACAD ROMANE, 2011) Usta, Ayhan; Zengin, Mehmet; Birey, MehmetThe single crystals of the 2,4 dinitrochlorobenzen were grown by slow evaporation of concentrated ethanol solution. Some of these single crystals exposed to Co-60-gamma rays with dose rate of 0.880 kGy/h at room temperature for 48 and 72 h. The EPR spectra were recorded as a function of temperature and orientations of the single crystal in the magnetic field. The single crystal irradiated for 72 h was rotated in steps of 100 in three mutually perpendicular planes in the magnetic field. The ESR temperature measurements were performed between 120 K and 440 K. The spectra recorded were found to be dependent on the temperature and the orientations of the crystal. It was also detected that only a radical structure and color centers were occurred after irradiation. The average values of g and hyperfine coupling constants were calculated as follow: a(Na=Nb)=13.70 G, a(H1=H2)=8.95 G, a(H3)=7.06 G, g=2.0039.Öğe Konya ovası sulama sularının su kalitesi açısından sınıflandırılması üzerine bir araştırma(Selçuk Üniversitesi Fen Bilimleri Enstitüsü, 1992-08-17) Zengin, Mehmet; Bayraklı, FethiBu tez çalışması, 1991 yılı Temmuz ve Ekim aylarında Konya ovasını temsilen alınan ondört adet yerüstü ve^ yeraltı sulama sularının, bitki beslenmesi açısından niteliklerini (pH, EC, SAO.'^S^/ÇSY^ kimyasal içeriklerini (Ca++, Mg++, Na+, K\ CO3", HCO3, Cl~, SÖ4") ve iz elementlerini (Fe, Co, Mn, Zn, B) belirlemek amacıyia yapılmıştır. Analizler sonucunda, yeraltı sulama sularının (no : 1, 12) yerüstü sulama sularına göre daha düşük pH, diğerlerine göre S.U. Ziraat Fakültesi Araştırma ve Uygulama Çiftliği sondaj suyunun (no: 1) daha fazla Ca++ ve Fe, Konya şehir kanalizasyonunun (no : 3) Ca++ ve HCC3, Arapçayın ana drenaj kanalının (no: 4) EC, Mg++, Na+, HCO3-, Cl" ve Mn, Hotamış gölünün (no : 5) SO4" ve Mn, Apa barajı sılama suyunun (no : 8) Fe ve Zn ve Akşehir gölünün (no : 14) pH, Na+, K"*", SO4" ve B değerlerine sahip olduğu belMenmiştir. Tuzluluk yönünden Konya şehir kanalizasyonu (no : 3), Arapçayın ana drenaj kanalı (no : 4), Hotamış gölü (no : 5) ve Akşehir gölü (no : 14) sulan çok yüksek EC değerlerine sahip olduklarından (C4-2250 micromhos/cm'den fazla) zararlı bulunmuşlardır. Ayrıca analizi yapılan sulama sularının hiçbirinde Cu elementine, Akşehir gölü (no : 14) hariç diğer su örneklerinde de CO3 " anyonuna rastlanmamıştır. Sodiklİk bakımından yine Arapçayın ana drenaj kanalı (no: 4) ve Akşehir gölü (no : 14) sulan yüksek Na+ içeriklerinden dolayı zararlı görülmüşlerdir. Bor elementini fazlaca bulundurduklarından Hotamış gölü (no : 5) ve Akşehir gölü (no : 14) sulan bitkiler için toksik olarak belirlenmişlerdir. İvriz, May, Apa, Altınapa barajlar Beyşehir ve Çavuşçu gölü ile Göksu nehri sulan problemsiz yani iyi kaliteli sulama sulan olarak değerlendirilmişlerdir.Öğe Kurak koşullarda yetiştirilen fasulye bitkisine uygulanan potasyumun stres toleransına etkisi(Selçuk Üniversitesi Fen Bilimleri Enstitüsü, 2019) Zengin, Mehmet; Hamurcu, MehmetKurak koşullara maruz bırakılan fasulye bitkisinin stres toleransı üzerine, potasyum uygulamalarının olası iyileştirici etkileri fizyolojik ve biyokimyasal parametrelere bakılarak değerlendirildiği bu çalışmada, fasulye genotiplerine, -0.42 Mpa ozmotik basınca denk gelen PEG 6000 koşullarına maruz bırakılan fasulye bitkilerinin osmotik stres toleransı üzerine, potasyum (0 ppm, kontrol, 100 ppm ve 200 ppm ) dozları uygulanmıştır. Fasulye genotipinin kuraklık stresi koşullarında potasyum uygulamalarının etkilerini ortaya koymak amacıyla kök ve gövde boyu, yaş ve kuru ağırlık gibi temel büyüme parametrelerinin yanı sıra, prolin birikimi, hücre zarı geçirgenliği (Elektrolit Sızıntısı), malondialdehit (MDA) miktarı, süperoksit dismutaz (SOD), peroksidaz (POX), katalaz (CAT), antioksidan enzim aktiviteleri incelenmiştir. Ayrıca bitkilerin gövde ve köklerindeki besin elementi durumlarında oluşan değişimler Ca, K, Mg ve Na içeriklerinin analiz edilmesiyle belirlenmiştir. PEG 6000 uygulanan koşullarında bitki kök, gövde yaş ve kök, gövde kuru ağırlık ve gövde boyu değerlerinde azalmalar meydana geldiği belirlenmiştir.Öğe Mineral contents of some aromatic plants, their growth soils ana infusions(WILEY-BLACKWELL, 2008) Zengin, Mehmet; Özcan, Mehmet Musa; Çetin, Ümmühan; Gezgin, SaitBACKGROUND: In this study, 18 kinds of medicinal plants were collected together with their soils from different regions of Turkey and their macro- and micro-element and heavy metal contents were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES). In soils, pH, electrical conductivity, carbonate (lime), organic matter, texture, P, K, Ca, Mg, Fe, Cu, Mn, Zn and B were analysed. In plants and extracts, P, K, Ca, Mg, Fe, Cu, Mn, Zn, B, Na, Al, Li, Pb, Ni, Cd, Co and Cr contents were determined. Also, correlations between soil and plant and between plant and extract were established. RESULTS: Element concentrations ranged between 0.11 and 5160 mu g g(-1) in soil samples, between 0.14 and 54400 mu g g(-1) in plant samples and between 0.039 and 22033 mu g g(-1) in extract samples. While sage was rich in Fe (981.3 mu g g(-1)), basil was abundant in P (9.8 mg g(-1)), K (54.4 mg g(-1)), Ca (22.6 mg g(-1)), Mg (3.1 mg g(-1)) and Zn (46.05 mu g g(-1)) and mint was rich in Li (23.50 mu g g(-1)). Moreover, while high levels of P (4100.9 mu g g-1), K (22033 mu g g(-1)) and Mg (529.15 mu g g(-1)) were found in basil extract, Ca (5979.3 mu g g(-1)) was present at high concentration in marjoram leaf extract. Also, Fe (4.25 mu g g(-1)) and Zn (17.51 mu g g(-1)) were detected at high levels in lime flower and mint extracts respectively. CONCLUSION: It was concluded that aromatic plants are important sources of nutrients and essential elements. (c) 2007 Society of Chemical Industry.Öğe Nitratın ıspanak bitkisinde birikimi ve topraktan yıkanması üzerine bazı azotlu gübrelerin etkileri(Selçuk Üniversitesi Fen Bilimleri Enstitüsü, 1997-11-14) Zengin, Mehmet; Gür, KemalBu çalışma, artan miktarlarda uygulanan bazı azotlu gübreler (amonyum nit rat- AN, amonyum sülfat-AS ve üre -Ü) ile ahır gübresinin (AG) ıspanak bitkisinde (Spinacia oleracea L.) nitrat birikimi ve verimi ile azotun topraktan yıkanması üzerine olan etkilerini belirlemek amacıyla yapılmıştır. Bu amaçla, sera koşulları altında saksılarda kışlık ve yazlık olarak killi ün ve kumlu tın toprakta yetiştirilen deneme bitkilerinin yaprak, sap ve köklerinde nitrat birikimleri, yaş ve kuru madde verimleri ile topraktan azot yıkanması, hasat sonrası azot kalıntısı ve azot kanzanç-kayıp farkları araştırılmıştır. Araştırma sonuçlarına göre, bitkide nitrat birikimi üzerine mevsim, tekstür, gübre çeşidi ve gübre dozlarının etkileri önemli (p<0.05) bulunmuştur. Diğer bir ifa deyle ıspanaktaki nitrat birikimi bakımından kış mevsimi, killi tın toprak, üre gübresi ve gübre dozu olarak da 60 kg N/da dozu daha yüksek (p<0.05) değerler vermiştir. 20 kg N/da ve üzerindeki gübre dozları ile taze sebzeler için müsade edilebilir sınır değeri (300 mg NO3 /kg) aşılmıştır. En yüksek yaş ve kuru madde verimleri yazlık ıspanaklarda, killi tın toprakta, üre (yaş madde verimi) ve amonyum nitrat (kuru madde verimi) gübrelerinin 40 kg N/ da dozu ile elde edilmiştir. Diğer taraftan, topraktan nitrat azotu yıkanması üzerine kış mevsiminin, kumlu tın tekstürün, AN gübresinin ve 40 kg N/da gübre dozunun etkileri 0.05 seviyesinde önemli bulunmuştur. Azot yıkanması şeklindeki en düşük azot kaybı ahır gübresinde ve kontrol grubunda belirlenmiştir. Ayrıca, yıkanan toplam azotun % 8 Tinin nitrat azotu biçiminde olduğu tespit edilmiştir.Öğe Response of maize for grain to potassium and magnesium fertilizers in soils with high lime contents(TAYLOR & FRANCIS INC, 2017) Ertiftik, Hakan; Zengin, MehmetAn antagonistic reaction between calcium (Ca) and magnesium (Mg) and potassium (K) may lead to low absorption of K and Mg by plants from soils with high Ca contents even when levels of K and Mg should be adequate. Two separate field studies were carried out in 2009 and 2010 to determine the effects of potassium (0, 40, 80, 120kg K2O ha(-1); as potassium sulfate) and magnesium (0, 20, 40, 60kg magnesium oxide (MgO)ha(-1); as magnesium sulfate) applied to a soil with high lime content either separately or in combinations, on the grain yield and yield components of maize for grain in semi-arid Central Anatolia in Turkey. One dose of the K, Mg-fertilizers was applied during sowing in both years. According to the results, increasing the dosage of K increased yield components more than increases in Mg dosages. Combinations of K and Mg tended to maximize the yield components. Moreover, the greatest plant heights, first ear lengths, grain weights per ear and protein ratios were obtained for the K80Mg40 dose.Öğe Response of sunflower to potassium and magnesium fertilizers in calcerous soils in central Anatolia of Turkey(TAYLOR & FRANCIS INC, 2016) Ertiftik, Hakan; Zengin, MehmetThis research was carried out to determine the effects of potassium [0, 40, 80, 120kg potassium oxide (K2O) ha(-1)] and magnesium (0, 20, 40, 60kg magnesium oxide (MgO) ha(-1)) applied into soil separately and together on the grain yield and yield components of sunflower for oil grown in two farmer fields in the semi-arid Central Anatolia in 2009 and 2010. The experiments were set as factorial experiment design in randomized blocks and 4 replicates. Potassium and Mg-fertilizers were used in the single time into base in the sowing. According to the results, K application in the increasing doses increased yield components more than that of Mg. Together giving of the K and Mg in certain combinations took the yield components to maximum levels. The highest grain yields were obtained by the K40Mg40 in the first year (7313kg ha(-1)) and by the Mg-60 in the second year (6510kg ha(-1)).Öğe X-band EPR study on benzo[c]cinnoline single crystals(TAYLOR & FRANCIS LTD, 2007) Usta, Ayhan; Zengin, Mehmet; Olmez, Oznur; Birey, MehmetThe benzo[c]cinnoline compound has been crystallized in ethanol solution. These crystals have been irradiated with Co-60 gamma-rays at room temperature. The crystals have been investigated by an X-band electron spin resonance (ESR) spectrometer two days after irradiation. Very strong ESR peaks have been observed at the temperatures between 130 and 430 K. However, a line broadening has been observed at 130K. Also analyses found that EPR specra are temperature-dependent and show anisotropic behaviour.
