Grain pea, cultivated as a pure crop, is prone to lodging and susceptible to biotic and abiotic stress.
Solution
This practice note provides insight into intercropping systems of pea and cereals as developed and used in Switzerland. This cropping system was developed over years in an iterative process in cooperation with farmers using farm-based experiments.
Description
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.
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