Onions

Michigan Onion Industry Research Priorities

Contact person / Submitter: John Bakker

Updated 2015

 

  1. Weed control management:

a)      Improved crop safety of post-emergence herbicides

b)      Improved weed control with pre-emergence herbicides

c)      Improved control of yellow nutsedge through chemical and/or cultural methods.

 

Estimated economic impact: Chemical weed control is critical. Estimated yield reduction through poor weed control and /or crop injury are $500/acre. Hand and /or mechanical weed removal due to inadequate chemical control adds $200/acre. Estimated revenue lost due to weeds is $700 x 3600acres = $2.5 million
This is a long-term priority. Michigan Onion Committee funds research.

 

  1. Disease control management:

a)      Improved understanding and control of Michigan’s new onion disease: Colletotrichum

b)      Improved control of: Purple Blotch, Stemphylium & Botrytis leaf blight

c)      Development of disease forecasting models for onion 

Estimated economic impact: Potential for 10 percent to 50 percent yield loss from reduced yields and culls ($1.5 million to $7.5 million).
This is a long-term priority. Michigan Onion Committee funds research.

  1. Insect control management:

a)      Improved control of onion thrips, pesticide resistance strategies for thrips and onion maggot, improved IPM strategies.

Estimated economic impact: Potential for 10 percent to 35 percent yield loss ($1.5 million to $5.4 million) due to poor or inadequate control.
This is a long-term priority. Michigan Onion Committee funds research..

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