The Effect of Different Mixture Ratio of Barley and Vicia Seeds on Their Yield in Dry Land Condition

Intercropping of grass-legumes could be increase quantitative and qualitative yield per unit of dry land area. A series experiments were carried out to evaluate five treatments % (w/w) including: T1:Hurdeume0Vetch100, T2: Hurdeume 25 Vetch 75, T3: Hurdeume 50 Vetch 50, T4: Hurdeume 75 Vetch 25, T5: Hurdeume 100 Vetch 0 as randomized complete blocks design during three years (from 2004 to 2007) with 3 replications at Maraghe station. Seeds were planted in 20cm row spacing in autumn. ANOVA results showed that the effects of treatments were significant (p≤%1). The results at three growth stages showed that the highest wet and dry forage yield before and after flowering and also stubble and grain yield belong to T3, T4 and T5 treatments. The lowest yield was obtained from T1 treatment. But for highly ratio present of legume in T3 this treatment recommended for dry lands. In flowering stage of vetch, gravimetric soil water content in 3 different depth (0-10, 10-20. 20-30 cm) of soil were significantly different between treatments and in each depth highest value belong to T3 respectively 23.39, 25.43 and 25.90 %.