Yazar "Hakyemez, Basri Hakan" seçeneğine göre listele

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    Öğe
    Adi fiğ (Vicia sativa L.)' de ekim zamanlarının ot ve tane verimi üzerine etkileri
    (2006) Hakyemez, Basri Hakan
    Bu araştırma Çanakkale-Ezine ekolojik koşullarında, adi fiğ için en uygun ekim zamanının belirlenmesi amacıyla 2003-2005 yılları arasında çiftçi şartlarında yürütülmüştür. Araştırmada, beş kışlık (Ekimin ikinci yarısı, Kasımın ilk yarısı, Kasımın ikinci yarısı, Aralığın ilk yarısı, Aralığın ikinci yarısı) ve bir yazlık (Mart sonu) olmak üzere altı ekim zamanı ele alınmıştır. Deneme tesadüf blokları deneme desenine göre 3 tekrarlamalı olarak kurulmuştur. Denemede yaş ot, kuru madde ve tohum verimleri ile protein verimleri değerlendirilmiştir. Araştırma sonuçlarına göre en yüksek ot ve otta protein verimleri Ekim sonundan Kasım ortasına kadar yapılan kışlık ekimlerden elde edilmiştir. Tohum ve tohumda protein verimleri bakımından kışlık ekimler arasında bir farklılık görülmemiştir. Çalışmada tohum ve ot üretimi için ekimlerin kışlık olarak yapılması gerektiği belirlenmiştir.
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    Öğe
    Pilot study for an assessment of vegetation structure for steppe rangelands of Central Anatolia
    (Tubitak Scientific & Technological Research Council Turkey, 2008) Firincioglu, Hueseyin Kansur; Sahin, Bilal; Seefeldt, Steven; Mert, Fehmi; Hakyemez, Basri Hakan; Vural, Mecit
    In the last 50 years, rangelands in the Central Anatolian Region of Turkey have been converted to cropping lands, which has negatively accelerated vegetation change. resulting in overgrazing and poor condition and productivity. In these steppe rangelands, to develop a rational basis for making restoration and management decisions. the vegetation structure must be well understood. Thus. the objectives of this study were to: (1) define vegetation patterns through assessing spatial distribution of the plant species and groups, (2) evaluate the relationships between vegetation and environmental aspects and range condition, and (3) outline possible restoration implementations. Therefore, a study was carried out in Pasah village rangelands of Nevsehir province in 2004. Thirty-seven sites in 733 ha range area were surveyed, and 78 plant species were identified. Most of the identified species were forbs (60), followed by grasses (11) and shrubs (7). The major range species were Thymus sipyleus (7.2%). Festuca valesiaca (6.9%). and Bromus tomentellus (6.4%). Range condition scores fell between 1.20 to 3.40, representing very poor to poor condition. The positive relation of Bromus tomentellus cover. as an enviable perennial grass, with the range condition score (P < 0.001) can pave the way for the condition improvement. Our classification result displayed several groups of species, although there were not many environmental differences, indicating that the groupings are most likely to have occurred due to the spatially-varying grazing intensity. In order to increase the proportion of desirable species in this over-grazed rangeland, the implementation of deferment grazing especially until after seed setting should be essential.
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    Öğe
    Production Potential of a Natural Pasture Compared to a Wheat Pasture, Both Grazed by Lactating Goats under Mediterranean Climate Conditions
    (Tubitak Scientific & Technological Research Council Turkey, 2008) Hakyemez, Basri Hakan; Gokkus, Ahmet; Yurtman, Ismail Yaman; Savas, Tuerker
    The aim of this study was to extend the grazing period using a wheat pasture that produced high quality forage, and to compare the productivity of natural and wheat pastures for grazing goats during a 3-year period (2003-2005) in a Mediterranean zone of Turkey. Twelve 3-4-year-old Saanen goats were allocated to each pasture (10 goats ha(-1)). Pastures were grazed for 2 months (May and June) in 2003 and for 3 months (April, May, and June) in 2004 and 2005. In the study, pasture yield and hay intake, crude protein (CP), neutral detergent fiber (NDF), and acid detergent fiber (ADF) content of the hay, and milk yield and milk fat percentage were determined. Pasture yield was significantly affected by pasture type (P < 0.001) for each year and the wheat pasture (5.34-6.51 t ha(-1)) yielded approximately 3.5-fold more hay than the natural pasture (1.48-1.88 t ha-1). Goats in the wheat pasture consumed significantly more forage in 2003 (P = 0.015), 2004 (P < 0.001), and 2005 (P < 0.001). Average hay intake in the wheat pasture ranged between 2.32 +/- 0.27 and 2.53 +/- 0.27 kg d(-1) in 2003, 1.42 +/- 0.26 and 3.35 +/- 0.26 kg d(-1) in 2004, and 2.69 +/- 0.25 and 3.33 +/- 0.25 kg d(-1) in 2005, whereas it ranged between 1.54 +/- 0.27 and 1.95 +/- 0.27 kg d(-1) in 2003, 0.79 +/- 0.26 and 1.79 +/- 0.26 kg d(-1) in 2004, and 0.81 +/- 0.25 and 1.60 +/- 0.25 kg d(-1) in 2005 in the natural pasture. Most of the interactions between pasture type and grazing month were statistically significant in terms of the CP, NDF, and ADF content of the pasture samples. In the first months CP content of the hay in the wheat pasture was higher than in the natural pasture, whereas this was reversed, especially in June. In addition, NDF and ADF content were not similar to CP content. In general, daily milk yield of the goats grazed on the wheat pasture was higher than that of those grazed on the natural pasture throughout the study. Milk yield was consistent with hay intake and milk fat percentage was inversely related to milk yield during the study. It was concluded that the wheat pasture had better potential for supplying nutrients to lactating dairy goats than did the natural pasture in spring.