Intercropping of grain pea with cereals

Summary

The cultivation of semi-leafless grain peas mixed with barley and forage peas for grain production intercropped with rye or triticale is a proven approach to pea production and has become a standard way to cultivate grain peas in organic systems in Switzerland. In addition, as a further partner, camelina can be added to pea and barley.
The note provide steps to successful intercropping of peas and cereals, including plant partners, crop rotation, seedbed preparation, sowing, seeding timing, weed control, fertilization, harvest and separation.
Key practice notes include:
• Mixing of seeds of intercropping partners before sowing, prevent de-mixing during sowing (occasional control of seedtank), sowing depth according to grain legume needs.
• Start with proposed seed mixing ratios and adapt to local conditions or varieties.
• Make sure separation of the harvested crop is possible.