Why Midge Tolerant Wheat is Sold as a Blend — and Why it Matters for Spring 2026
Why Midge Tolerant Wheat is Sold as a Blend — and Why it Matters for Spring 2026
Unexpected wheat midge outbreaks across Western Canada highlight why the varietal blend remains essential.
As farmers look ahead to spring, it’s a good time to revisit the cornerstone of protecting the Sm1 (midge tolerant) wheat gene: understanding why Midge Tolerant Wheat is sold as a varietal blend. In these blends, a variety of Midge Tolerant Wheat is mixed in with a small amount (10%) of wheat that isn’t tolerant to the wheat midge. That is, it doesn’t contain the gene Sm1, the source of gen
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