The effect of intercropping common vetch (Vicia sativa L.) with naked oat (Avena strigosa Schieb.) at different seed proportions was evaluated. The trial was set up on a Red Yellow Podzolic soil of Santa Maria, RS, Brazil. The treatments were the following: 1- 100% E (common vetch); 2- 90% E + 10% A (naked oat); 3- 75% E + 25% A; 4- 50% E + 50% A; 5- 25% E + 75% A; 6- 100% A; 7- fall tillage organized in four randomized blocks. Biomass production was evaluated at the flowering stage in an area of 0.8 m2 per plot. Data show that both species can be intercropped which is beneficial to biomass production and nitrogen accumulation.
intercropping; winter species; green manure; nitrogen
