Yazar "Hakyemez, B. Hakan" seçeneğine göre listele

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    Öğe
    Bazı İskenderiye üçgülü (Trifolium alexandrinum L.) çeşitlrinin Ankara sulu koşullarına uyumu ve verimin biçim sırasına göre değişimi
    (2005) Hakyemez, B. Hakan; Sancak, Cengiz
    Bu araştırma Ankara Üniversitesi Ziraat Fakültesi Tarla Bitkileri Bölümü'nde ve 2 yıl süre ile yürütülmüştür. Çalışmada Ankara sulu koşullarında denemeye alınan en uygun iskenderiye üçgülü çeşidinin ve çeşitlerde biçim sıralarına göre verim değişikliklerinin belirlenmesi amaçlanmıştır. Bölünmüş parseller deneme desenine göre planlanan çalışmada ana parsellerde çeşitler, alt parsellerde ise biçim sıraları yer almıştır. Araştırmada kullanılan çeşitlerden her iki yılda da üçer biçim elde edilmiştir. Araştırma sonuçlarına göre en yüksek verimler Lito çeşidinde saptanmıştır. Her iki yılda da biçim sıraları arasındaki farklılığın önemli olduğu ve ilerleyen biçimlerde verimin önemli bir şekilde azaldığı görülmüştür.
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    Öğe
    Effect of the saline water on annual ryegrass (lolium multiflorum lam) yield and soil salinity
    (2006) Parlak, Altıngül Özaslan; Parlak, Mehmet; Hakyemez, B. Hakan
    This study was conducted with the intent of determining the effect of different salt types and concentrations on ryegrass yield and quality using 35x 65 cm PVC pipes in greenhouse conditions. Five different treatments of NaCl and KC1 (0.25, 0.5, 1.0, 2.0 % and control) were established in a 2 x 5 factorial design with 3 replicates. Increasing salt concentration decreased plant height, main stem thickness, green and dry matter yield, crude protein yield and total ash yield. Plant growth showed slow increase when the plants were irrigated with 1.0 and 2.0 % salt concentration. KC1, comparing to NaCl, caused more damage on plants. Moreover, soil salinity also increased with the increase of salt concentration in irrigation water.
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    Öğe
    Farklı mera tiplerinde değişik yoğunluklarda keçi otlatmanın meraların ot ve keçilerin süt verimlerine etkileri
    (2005) Gökkuş, Ahmet; Hakyemez, B. Hakan; Yurtman, İ.Yaman; Savas, Türker
    Çanakkale'de 2003-2004 yıllarında yürütülen bu araştırmada değişik meralarda farklı yoğunluklarda otlatmanın meranın ot verimi ile keçilerin süt verimlerine etkileri incelenmiştir. Denemede Saanen keçilerinden oluşan 24 başlık sağmal sürü doğal ve buğday merasında üç ayrı yoğunlukta (hafif: 0.5 keçi/da, orta: 1.0 keçi/da, ağır: 1.5 keçi/da) 2-3 ay süreyle otlatılmıştır. Buğday merasının ot verimi, yenen ot miktarı ve keçilerin süt verimleri doğal meradan yüksek olmuştur. Otlatma yoğunluğu arttıkça meraların kuru ot verimleri azalırken, yenen ot miktarı ve oranı artmış, süt verimlerinde ise önemli bir değişim görülmemiştir. Otlatma başlangıcından Mayıs ayına kadar ot verimi yükselmiş, daha sonra azalmıştır. Yenen ot miktarı ve oranı ile süt verimleri yeşil büyüme döneminde yüksek olurken, meraların kuruduğu haziran ayında düşmüştür.
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    Öğe
    Forage yield and quality of kermes oak and herbaceous species throughout a year in Mediterranean zone of western Turkey
    (Wfl Publ, 2011) Parlak, Altingul Ozaslan; Gokkus, Ahmet; Hakyemez, B. Hakan; Bayetekin, Harun
    The most common shrub species in the Mediterranean vegetation is kermes oak (Quercus coccifera). This evergreen shrub and herbaceous vegetation underneath it is grazed by goats and other animals year round. In this research, the botanical composition of shruby grazeland located in the Mediterranean vegetation along with the forage yield (in October, 2006 and May, 2007) and nutritional value (between December, 2006 and November, 2007) of both the herbaceous species and kermes oak was studied. DM, CP, NDF, ADF, ADL, ash, DMD, ME, P and Ca contents of the shrub and herbaceous species were determined. Grazeland was covered by shrubs in 47.26%. Kermes oak was widely dominant (28.90%). In the herbaceous vegetation, grasses were most commonly found (57.36%), followed by forbs (32.94%) and legumes (9.70%). On the average, while kermes oak contained more DM, NDF, ADF and ADL, the herbaceous species had higher contents of CP, ash, DM D, ME, P and Ca. When plants started to grow in the springtime, DM, NDF, ADF and ADL decreased and CP, DMD, ME, P and Ca increased in both kermes oak and herbaceous species. Ash content changed in kermes oak throughout the year and no change was observed in the herbaceous species. Kermes oak specially had more CP and less DM compared to the herbaceous species during the summer. When the forage yield and nutritional value of the grazeland was considered, in the grazing goats there was a deficiency of HP during July-September and ME in the months other than April and May, and no deficiency of P and Ca. Consecutively, in the grazing lands representing Mediterranean vegetation, goats should be fed with supplementary energy feed throughout the year except for spring months, and with CP during summer months in order to obtain satisfactory productivity.
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    Öğe
    Shrub yield and forage quality in Mediterranean shrublands of West Turkey for a period of one year
    (Academic Journals, 2011) Parlak, Altingul Ozaslan; Gokkus, Ahmet; Hakyemez, B. Hakan; Baytekin, Harun
    Shrublands are important habitats for ruminants in the Mediterranean area. The purpose of this study was to evaluate the shrub yield, quality (between November 2006-November 2007) and preferences of goats for the six shrubs (Quercus coccifera L., Phillyrea latifolia L., Juniperus oxycedrus, Cistus creticus L., Sarcopoterium spinosum (L.) Spach and Thymus longicaulis C. Presl.) of Mediterranean shrublands in Turkey. In the shrubland the highest yield was obtained from kermes oak and prickly juniper. Yield in May was higher than that of in October. Dry matter (DM), Neutral detergent fiber (NDF), acid detergent fiber (ADF) and acid detergent lignin (ADL) were low and Crude protein (CP), Dry matter digestibility (DMD), ME, P, and Ca were high during the spring in the kermes oak, thyme and mock privet. Reverse situation was observed during the summer and winter months. Changes in the prickly juniper, pink rockrose and prickly burnet were not stable. When production and nutritive values of the shrubs were considered, goats showed deficiency in CP and ME throughout the year except in the spring. P and Ca were found sufficient. As a conclusion, in Mediterranean shrublands, goats should be fed with supplementary energy feed throughout the year except for spring months, and with CP during summer months in order to obtain satisfactory productivity.
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    Öğe
    Soil chemical differences between pasture types in Southern Marmara, Turkey
    (Asian Journal Of Chemistry, 2008) Hakyemez, B. Hakan; Parlak, Altingul O.; Celik, Sezgin; Gokkus, Ahmet
    In this study, the effects of soils on poor yield and condition of pastures in Southern Marmara, Turkey were determined. For this reason, total of 60 soil samples, in Spring 2006, were collected from 5 types of pastures in Canakkale, Balikesir and Bursa provinces, all located in the Southern Marmara region. Pasture types investigated were mountain, shrubland, coastal, lowland and forest gap type pastures. All of the collected soil samples were being evaluated for soil electrical conductivity (EC), pH, CaCO3, P, K, Ca. Mg, Na, Fe, Mn, Zn, Cu and organic matter. The EC (P = 0.000), CaCO3 (P = 0.009), organic matter (P = 0.000), P (P = 0.003), K (P = 0.027), Fe (P = 0.025) and Cu (P = 0.047) levels of soils were significantly different between pastures. Highest levels of EC (1.67 +/- 0.82 dS m(-1)) and of CaCO3 (5.81 +/- 1.02 %), were found in the soil samples obtained from coastal region and shrubland type pastures, respectively. However, the highest levels of both organic matter (4.94 +/- 0.50 %) and P (49.0 +/- 3.4 ppm) were found in both forest gap and lowland type pastures. Cu level was the highest in coastal type pastures among all 5 types of pastures analyzed. Among the provincial pastures, pH (P = 0.009), organic matter (P = 0.007), P (P = 0.002). Ca (P = 0.019), Mg (P = 0.020), Fe (P = 0.000), Zn (P = 0.013) and Cu (P = 0.003) levels of soils were significant. The highest levels of pH (7.40 +/- 0.11), of CaCO3 (4.87 +/- 0.61 %), of Ca (3049 +/- 275 ppm) and of Mg (656.7 +/- 60.9 ppm) level were found in pastures of Canakkale province while the highest levels of organic matter (%4.01 +/- 0.40), of Fe (22.8 +/- 3.0 ppm), of Zn (1.21 +/- 0.10) and of Cu (0.92 +/- 0.08 ppm) were found in pastures of Bursa province. Overall results of this study indicated that pastures of Southern Marmara region do not have very significant problem in their soil chemical compositions., Therefore, in order to improve these pastures, prescribed grazing management or weed/vegetation management practices should be applied.