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    EFFECTS OF CONVENTIONAL AND ORGANIC FERTILIZERS ON PLANT NUTRITION AND ESSENTIAL OIL COMPONENTS OF BASIL
    (Parlar Scientific Publications (P S P), 2014) Tepecik, Mahmut; Esetlili, Bihter Colak; Cicekli, Murat; Cobanoglu, Ozgur; Ozturk, Bintug; Anac, Dilek
    In this study, green herb and drug herb yields of basil (Ocimum basilicum L.) grown in organic and conventional farming systems were examined. Primary plant nutrients, total essential oil contents (%), and essential oil components were investigated as well. In the conventional system, nutrient inputs included 15.15.15 and monopotassium phosphate (MKP) fertilizers, and in the organic system, nutrient inputs included bone meal + zeolite (BM+Z) and rock phosphate + zeolite (RP+Z). For conventionally grown basil, the highest green herb yield was 1027.5 kg/da, and the highest drug herb yield was 191.1 kg/da. Green herb and drug herb yields were 872.6 kg/da in the MKP plots under conventional farming and 196.3 kg/da in the bone meal + zeolite plots under organic farming. Analysis of primary plant nutrients showed that nitrogen and magnesium contents in the 15.15.15 fertilizer plots and phosphorus, potassium, and calcium contents in the MKP plots were higher. Rock phosphate + zeolite was the forefront application in the organic farming system. Essential oil yields were highest in the 15.15.15 treatment in the conventional farming system and in the control plot in the organic farming system. The most important essential oil component in both farming systems was linalool.
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    ESSENTIAL AND NON-ESSENTIAL HEAVY METAL CONSTITUENTS OF GERMAN CHAMOMILE: EFFECT OF DIFFERENT FARMING SYSTEMS
    (Parlar Scientific Publications (P S P), 2014) Esetlili, Bihter Colak; Tepecik, Mahmut; Cobanoglu, Ozgur; Anac, Dilek
    Two different experiments were conducted with German chamomile grown according to conventional and organic farming systems. Flower (drug) and shoot yields were determined, and their essential (Fe, Zn, Mn and Cu) and non-essential heavy metal (Pb, Ni, Co, Cr and Cd) contents were measured and the results were compared according to treatments: control-without treatment to fertilization, 15:15:15 + ammonium nitrate (AN) + potassium sulfate (KS), monopotassium sulfate (MKP) + AN + KS, control + farmyard manure (FYM) + sulphur (S), bone meal (BM) + zeolite (Z) + FYM + S, rock phosphate (RP) + Z + FYM + S. It can be concluded that the yield responses of chamomile in 15:15:15 treatment of the conventional and BM (bone meal) + Z (zeolite) treatment of the organic experimentation were significant. All of these findings showed that there is not a significant metal accumulation risk for chamomile cultivated either according to the conventional farming system or to the standards of organic farming because all of the studied essential and non-essential metals are generally low or very slightly over the acceptable limits.
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    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, Dilek
    In 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.
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    Sweet basil (Ocimum basilicum L.) and potassium fertilization
    (Taylor & Francis Inc, 2016) Esetlili, Bihter Colak; Ozturk, Bintug; Cobanoglu, Ozgur; Anac, Dilek
    The objective of the present study was to examine the effect of potassium (K) fertilization and soil texture on total yield (1st and 2nd cuttings) and yield components of sweet basil (Ocimum basilicum L.) A greenhouse pot experiment was conducted in a completely randomized statistical design. Basil growth was examined in two different textured soils under three different doses of K fertilization. Generally, for the basil grown under clay soil conditions, moderate amounts of K fertilization is proposed to be sufficient if higher linalool contents are wanted. However, if the growing conditions are sandy loam in texture, it is suggested that higher doses of K be used. Results also highlighted the contribution of second cut as an important cultural practice in the cultivation of an annual basil.