tailieunhanh - Effects of seeding rates on competition indices of barley and vetch intercropping systems in the Eastern Mediterranean

Forage mixtures are common agricultural practices for the energy and protein needs of animals. In this study, common vetch (Vicia sativa L.), Hungarian vetch (Vicia pannonica L.), and barley (Hordeum vulgare L.) mixtures in different seeding rates were investigated in terms of forage yield and quality. | Turkish Journal of Agriculture and Forestry Turk J Agric For (2015) 39: 135-143 © TÜBİTAK doi: Research Article Effects of seeding rates on competition indices of barley and vetch intercropping systems in the Eastern Mediterranean 1, 2 1 3 Şaban YILMAZ *, Ali ÖZEL , Mehmet ATAK , Mustafa ERAYMAN Department of Field Crops, Faculty of Agriculture, Mustafa Kemal University, Hatay, Turkey 2 Ministry of Food, Agriculture, and Livestock, Republic of Turkey, Provincial Organization, Konya, Turkey 3 Department of Biology, Faculty of Science and Literature, Mustafa Kemal University, Hatay, Turkey 1 Received: Accepted: Published Online: Printed: Abstract: Forage mixtures are common agricultural practices for the energy and protein needs of animals. In this study, common vetch (Vicia sativa L.), Hungarian vetch (Vicia pannonica L.), and barley (Hordeum vulgare L.) mixtures in different seeding rates were investigated in terms of forage yield and quality. In order to evaluate the effect of vetch, cereal intercropping and the competition/ economic indices of 8 different legume–barley mixtures, along with their pure stands, were assessed during the 2008–2009 and 2009– 2010 growth seasons in the Eastern Mediterranean region of Turkey. The field experiment was arranged as a randomized complete block design with 3 replications for each year. Intercropping indices were calculated by means of land equivalent ratio (LER), aggressivity (A), crowding ratio (CR), and actual yield loss (AYL). Competition indices revealed that both the common vetch–barley and the Hungarian vetch–barley intercroppings at a seeding ratio of 80%:20%, respectively, were advantageous due to their high yield, land use efficiency, and economic value compared to other mixtures or pure stands. All samples were analyzed for quality parameters such as dry matter (DM), crude protein (CP), neutral .