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Options for Emergency Wind Control


Spring has sprung and soils are drying rapidly. Historically we usually see the highest, sustained wind speeds in the first few weeks of May. Gusty winds during a storm or just high winds can move soil. If the soil is dry, loose and bare there is a good chance that some of it is on the move and with it your valuable soil fertility! Control erosion early to prevent crop damage and further soil blowing. Watch areas like sandy knolls, headlands, roadways and other traffic areas for the early signs of soil movement.

Ideally there should be a program of cover crops or grass windstrips, tree windbreaks etc. in place for wind control, but unplanned changes in land and rotations can throw you some surprises. Oat or barley interseeds are possible, particularly on muck soils but if you want to create wind strips from oats or barley it is too late for the early May planted crops. Spring cereal wind strips may still have a place for late May and June planted crops.

Here are some options to consider:

Wind Control Option What is it doing Where it shines Limitations or problems
Create wind barriers from snow fence, bales of straw, strips of wood etc Slows wind speed across the field
Can create microclimate effects - temperature +1-2 F, advanced crop maturity

Large open fields with erosion prone knolls

Crops with harvest alleys

Cost and sourcing the materials
Cost of set up and removal (think soggy, half rotted straw bales)
usually spaced too far apart for good wind abatement
Spreading residue like straw, corn cobs on fields that are bare of residue Roughens the field surface
Protects from scouring action
Erosion prone knolls Getting the materials and anchoring it (larger particles stay in place better)
Possible harvest concerns
Tillage Roughens the field surface to reduce wind strength
May bring moisture to the top
Short term blow with very moist soils Destroying soil structure that is there
Dries the soil and breaks up aggregates - for a longer wind event, this will cause more erosion
Seeding or interseeding a cover crop Roughens the field surface
Helps to hold soil particles and protect from scouring

Headlands and harvest alleys

Interseeding in the crop

Height of cover crop for protection
removing interseeding in crop
Moisture competition with crop

 

For more information:
Toll Free: 1-877-424-1300
Local: (519) 826-4047
E-mail: ag.info.omafra@ontario.ca