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    Effects of seeding rate on forage yield and quality of vetch (Vicia sativa L.) - triticale (Triticosecale Wittm.) mixtures under east mediterranean rainfed conditions
    (Academic Journals, 2009) Kokten, Kagan; Toklu, Faruk; Atis, Ibrahim; Hatipoglu, Rustu
    This study was carried to determine the best seed mixture of vetch and triticale for East Mediterranean rainfed conditions of Turkey. The experiments were conducted in two locations, Adana and Kozan, during the years of 2003 - 2005. The field trials were arranged in a randomised block design with three replications. In the research, pure stands of vetch and triticale and their seed mixtures (80% vetch + 20% triticale, 60% vetch + 40% triticale, 40% vetch + 60% triticale, 20% vetch + 80% triticale) were studied. Crude protein concentrations, hay and crude protein yields of pure stands and the mixtures and the percentage of vetch in the dry matter yield were determined. In addition to these, relative yield total (RYT) values were calculated for the mixtures. The study showed that the characters studied were significantly influenced by years, locations and mixtures. According to the averaged values of two years, the seed mixture containing 20% vetch and 80% triticale gave highest dry matter yield with an average vetch content of 23.5% under Adana conditions, while the seed mixture of 40% Vetch + 60% triticale gave the highest dry matter yield with an average vetch content of 10% under Kozan conditions. RYT values for the mentioned mixtures were 1.12 and 1.20, respectively. It was concluded that the above mixtures of vetch and triticale could be recommended for the locations in Adana and Kozan, respectively.
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    Öğe
    Plant density and mixture ratio effects on the competition between common vetch and wheat
    (2012) Atis, Ibrahim; Kokten, Kagan; Hatipoglu, Rustu; Yilmaz, Saban; Atak, Mehmet; Can, Ersin
    Mixtures of annual forage legumes with winter small grains for forage are practiced traditionally in the Mediterranean countries. The aim of the present study was to investigate the effects of variable seed mixture rates and different plant densities on the forage yield. The study also investigated the competition effects among mixture partners in the mixture of common vetch (Vicia sativa L.) and wheat (Triticum aestivium L.). Field trials were conducted at two locations (L1, Hatay and L2, Adana) during the 2008-09 and 2009-10 growing seasons. Three plant densities (200, 400, 600 plants m-2) and five seed mixture ratios (100 % V, 75% V + 25% W, 50% V + 50% W, 25% V + 75% W, 100 % W) of common vetch (V) and wheat (W) were used. The results of the study showed that increased plant density in the mixture resulted in increased dry matter yield per unit area. In addition, increased seed ratio of wheat in the mixture caused increased dry matter yield per unit area. Also, elevated dry matter yield resulted in increased crude protein yield. Land equivalent ratio (LER), aggressivity (A) and competitive ratio (CR) indexes showed that common vetch was the dominant species in all common vetch-wheat mixtures.