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Öğe Determination of Yield and Quality Characteristics of Alfalfa (Medicago sativa L.) Varieties Grown in Different Locations(MEDWELL ONLINE, 2013) Avci, Mehmet Ali; Ozkose, Abdullah; Tamkoc, AhmetThis research was made in Konya and Polath-Ankara ecological conditions during the years of 2006 and 2007 according to Randomized Blocks Design with three replications The used alfalfa species were Verko, Sunter, Hemedan, Elci and Planet varieties and Kayseri population In the study, the fallowing characteristics were determined plant height (cm), stem thickness (mm), green herbage yield (t ha(-1)), dry matter yield (t ha(-1)), crude protein content (%) and crude protein yield (t ha(-1)) As the means of 2 years and two locations, the genotypes showed the fallowing values 620-682 cm for plant height, 30-32 mm for stem thickness, 838-891 t ha(-1) for green herbage yield, 209-223 t ha(-1) for dry matter yield, 185-194% for crude protein content and 402-422 t ha(-1) for crude protein yield The main goal of alfalfa farming is production of high quality and abundant roughage Kayseri population showed the highest dry matter yield (22 29 kg/da/year) and it was followed by the Verko (22 25 kg/da/year) variety The Verko variety had higher yield than Elci and partially more than Hemedan variety.Öğe Effect of Environment x Cultivar Interaction on Protein and Mineral Contents of Alfalfa (Medicago sativa L.) in Central Anatolia, Turkey(UNIV KEBANGSAAN MALAYSIA, 2018) Ozkose, AbdullahNutritive value and persistence of different alfalfa cultivars, but very little information is available in the literature on mineral concentrations, especially on microelements. This study was carried out to determine crude protein and mineral contents in alfalfa cultivars from two different locations, Ankara and Konya provinces, in Central Anatolia during 2005 and 2007. The experiment was conducted using a randomized complete block design with three replications. Significant differences in many investigated traits were found between cultivars, years, locations and location x year, location x cultivar, year x cultivar, and location x year x cultivar interactions. A crude protein ratio and micro and macro element contents (K, P, Mg, Ca, Mn, Fe, Zn, B, Mo, Cu, Cr, Se and Al) were analyzed in alfalfa on a dry weight basis. The results showed that the protein content ranged 17.23 to 20.71%. The macro element contents ranged 2.06 to 3.95 g kg(-1) for K, 13.65 to 23.25 g kg(-1) for P, 1.31 to 2.53 g kg(-1) for Mg, 6.71 to 22.81 g kg(-1) for Ca, and 44.3 to 92.7 mg kg(-1) for Fe, whereas the microelement contents ranged 15.4 to 54.3 mg kg(-1) for Mn, 24.6 to 121.9 mg kg(-1) for Zn, 46.4 to 85.4 mg kg(-1) for B, 0.50 to 6.13 mg kg(-1) for Mo, 3.13 to 4.17 mg kg(-1) for Cu, 0.93 to 2.40 mg kg(-1) for Cr, 0.77 to 1.03 mg kg(-1) for Se and 31.2 to 57.8 mg kg(-1) for Al. Significant differences at the p<0.01 or p<0.05 level in many investigated traits were found between cultivars, years, locations and location x year, location x cultivar, year x cultivar, and location x year x cultivar interactions. In conclusion, due to the fact that the location x year x cultivar interaction was found statistically significant, we suggest that appropriate cultivars are selected for each region.Öğe Effects of different mowing dates of plant top on tuber yield of Jerusalem artichoke (Helianthus tuberosus L.)(ACADEMIC JOURNALS, 2011) Acar, Ramazan; Ada, Rahim; Ozkose, AbdullahThis study was conducted to determine the effects of different mowing dates of plant top on tuber yield of Jerusalem artichoke (Helianthus tuberosus L) during 2005 and 2006 growing seasons. The experiment was designed according to the "split plots on randomized complete block" experimental design with three replications. Three different mowing dates [a: August 18 (before flowering), b: September 21 (beginning of flowering), c: October 20 (full flowering) and k: control (not-mowing)] and two varieties [red (K) and white (A) skin local Jerusalem artichoke] were taken as factors. Tuber yield and yield components were higher in the first mowing date and control than in the second and third mowing dates in 2005, 2006 and in the average of 2005 to 2006. Two years average maximum tuber yields per decare were 5149.78 kg in the control plots and 3327.27 kg in the plots of red skin of Jerusalem artichoke. The results suggest that first mowing date and control are suitable mowing times for tuber yield.Öğe MORPHOLOGICAL AND AGRONOMIC CHARACTERISTICS OF PERENNIAL RYEGRASS (Lolium perenne L.) GENOTYPES(SOC FIELD CROP SCI, 2014) Ozkose, Abdullah; Tamkoc, AhmetMany plants in natural flora including perennial ryegrass loss their genetic variability, suffer from genetic pollution or become extinction. In Turkey, studies on breeding of perennial ryegrass genotype collections are inadequate. This study aimed to determine some plant characteristics of perennial ryegrass plants collected from the natural flora of Ankara. Those genotypes were utilized in order to evaluate for breeding purposes. Seedlings were reproduced in greenhouse after collected seeds from plants were sown in pots. Seedlings were transplanted to the experimental field at 50 x 50 cm intervals in Randomized Complete Block Design with four replications during 2005. Data were obtained from the observations and 568 perennial ryegrasses in 2007 and 2008. The observations and measurement of the two year average values ranged from 2.25 to 6.50 (1=very early, 9=very late) for the spring re-growth time, 2.75 to 7.75 (1=very light green, 9=very dark green) for color, 1.25 to 6.88 (1=very low, 9=very high) for density, 1.0 - 8.0 (1=erect, 9=prostrate) for growth habit, 1.0 - 9.0 (1=very weak, 9=very strong) for tendency to inflorescences, 1.0 to 7.5 (1=very early, 9=very late) for time of inflorescence emergence. In the study, furthermore, measurements varied between 19.35 and 48.05 cm for plant height, 8.31 and 25.54 cm for length of upper internode, 6.76 and 16.28 cm for spike length, 6.44 and 14.57 cm for leaf length, 2.41 and 4.01 mm for leaf width, 1.68 and 4.87 cm(2) for leaf area, 21.23 and 45.52 for leaf shape, 11.63 and 23.75 for spikelet number per spike, 0.031 and 0.151 g spike(-1) for seed yield, 1.23 and 2.38 g for thousand grain weight. The findings showed that there were significant differences among genotypes in terms of investigated traits. The high level of genotypic variability increased the possibility for selection of suitable genotypes. Research results indicated that superior genotypes of perennial ryegrass could be utilized in future breeding programsÖğe PERENNIAL RYEGRASS (LOLIUM PERENNE L.) GENETIC RESOURCES IN THE CENTRAL ANATOLIA FLORA AND ENVIRONMENTAL PRESSURES ON BIODIVERSITY(PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2015) Ozkose, Abdullah; Avci, Mehmet Ali; Tamkoc, AhmetThis research was made in 2006-2007 to collect and develop perennial ryegrass genotypes which exist in the natural flora of Turkey. During plant collection, it was observed that perennial ryegrass genotypes were damaged due to decrease of meadows and pasture areas, and the increase of grazing pressure in these areas. Decrease of wetlands, marsh areas and drying of lakes, or decrease of their area depending on precipitation reduction and over-consnmption of water resources negatively influenced perennial ryegrass genotypes in the natural flora. Like many other plants in natural flora, perennial ryegrass genotypes are under great pressure and threat. Therefore, it must be concentrated on activities for improvement of plant varieties and protection of biological diversity of natural ryegrass resources, which has been decreasing day by day.Öğe Study of Genotype x Environment Interaction on Agricultural and Quality in Sainfoin (Onobrychis sativa) Genotypes(MEDWELL ONLINE, 2013) Avci, Mehmet Ali; Ozkose, Abdullah; Tamkoc, AhmetThis research was conducted to determine yield, yield components and quality characteristics of sainfoin genotypes m two locations winch were consisted from Selcuk University, Agricultural Faculty trial field (Konya) and Turkoba Village (Polath/Ankara) according to the Randomized Blocks Design with 4 replications Some traits such as plant height (cm), stem thickness (cm), green herbage yield (t ha(-1)), dry herbage yield (t ha(-1)), crude protein content (%), crude protein yield (kg ha(-1)) and ash content (%) were examined The characteristics of dry herbage yield, crude protein content and crude protein yield winch are known as the most important properties m forages were found as fallowing, 3 275-4 958 t ha(-1), 10 08-13 55% and 355 00-602 25 kg ha(-1), respectively.