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

Authors : Şaban YILMAZ, Ali ÖZEL, Mehmet ATAK, Mustafa ERAYMAN

Pages : 135-143

Doi:10.3906/tar-1406-155

View : 23 | Download : 12

Publication Date : 2015-02-01

Article Type : Research Paper

Abstract :Forage mixtures are common agricultural practices for the energy and protein needs of animals. In this study, common vetch insert ignore into journalissuearticles values(Vicia sativa L.);, Hungarian vetch insert ignore into journalissuearticles values(Vicia pannonica L.);, and barley insert ignore into journalissuearticles values(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 insert ignore into journalissuearticles values(LER);, aggressivity insert ignore into journalissuearticles values(A);, crowding ratio insert ignore into journalissuearticles values(CR);, and actual yield loss insert ignore into journalissuearticles values(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 insert ignore into journalissuearticles values(DM);, crude protein insert ignore into journalissuearticles values(CP);, neutral detergent fiber insert ignore into journalissuearticles values(NDF);, and acid detergent fiber insert ignore into journalissuearticles values(ADF); content. While digestible dry matter insert ignore into journalissuearticles values(DDM); content did not differ among treatments, CP, NDF, ADF, TDN insert ignore into journalissuearticles values(total digestible nutrients);, DDM, RFV insert ignore into journalissuearticles values(relative feed value);, and NE1 insert ignore into journalissuearticles values(net energy for lactation); content significantly differed among the different vetches-barley mixtures insert ignore into journalissuearticles values(P < 0.01);. The results emphasize that both vetch species combined with barley and using the seeding ratio of 80% vetch:20% barley should be profitable for farmers in terms of implementation and maximum yield per unit area under Eastern Mediterranean conditions.
Keywords : Annual mixtures, barley, competition indices, plant density, Vicia