Mustard Seed For 2017-18, exports are forecast to be slightly lower at 120 Kt and carry-out stocks are forecast to fall. The US and the EU are the main export markets to date for Canadian mustard seed. The average price is forecast to rise sharply from the previous year due to the lower supply and expectations for lower Canadian carry-out stocks. For 2018-19, the area seeded is forecast to be like the previous year due to expectations of similar returns based on new crop contracts. Production is forecast to rise to 145 Kt with marginally lower area but higher yields when compared to the previous year. However, supply is expected to fall by 10% due to lower carry-in stocks. Exports are expected to be higher and, as a result, carry-out stocks are forecast to tighten. The average price is forecast to be slightly higher than 2017-18.