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Diseases carryover in unharvested sugarbeets

USDA-ARS unharvested beets infected with Rhizoctonia
DISEASE TRANSFER: Rhizoctonia, which is infecting these sugarbeets, will carryover in unharvested beet fields.
Protect future sugarbeets with rotation planting, variety selection and chemical control.

Although it may be several years before sugarbeets are grown again on fields where beets couldn’t be harvested in 2019, special steps will have to be taken to manage a couple diseases that will carry over.

American Crystal Sugar Co.’s agronomy team recommends the following:

Aphanomyces history. If the unharvested sugarbeets were from a field with an Aphanomyces history, select a high tolerant Aphanomyces variety the next time you plant beets and use Tachigaren up to 45 grams.

Rhizoctonia history. If the unharvested sugarbeets are from a field that had Rhizoctonia, consider planting small grains in 2020 instead of beans, corn or potato that build up Rhizoctonia inoculum. The next time sugarbeets are planted in the field, plant a variety with high Rhizoctonia tolerance and use Azteroid fungicide in-furrow as well as a Post Quadris application.

Source: American Crystal Sugar Co., which is solely responsible for the information provided and is wholly owned by the source. Informa Business Media and all its subsidiaries are not responsible for any of the content contained in this information asset.
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