On the Prairies, mustard emergence is 50 to 80 per cent when moisture is not limiting. Due to its larger seed size, yellow mustard will have slightly better emergence than brown and oriental mustard. Research looking at thousand seed weight also identified that better emergence was found with heavier seed lots.
Due to the differences in seed sizes, the recommended rates for yellow mustard and for brown and oriental mustards will be different. For yellow mustard, the recommended seeding rate is 7 to 10 lb/acre (7.8 to 11.2 kg/ha) for a target plant stand of 7 to 11 plants/ft2 (70 to 110 plants/m2). For brown and oriental mustards, the recommended seeding rates are 4 to 6 lb/acre (4.5 to 6.7 kg/ha) for a target plant stand of 7 to 11 plants/ft2 (70 to 110 plants/m2). The lower seeding rate for brown and oriental mustards accounts for the smaller seed size which will result in more seeds per pound of seed.
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