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Cover Crops for Vegetable Growers

Why cover crops?
Soil Health

Decision Tool

Newsletter articles

Early summer
Mid and late summer
Late summer legumes
Early fall
Fall
Early spring

Cover crop information

Buckwheat

Annual ryegrass
Oats
Wheat (includes spelt, triticale)
Rye
Sudangrass
Reed Canarygrass

Arugula
Mustard, spring
Mustard, fall
Forage Radish
Forage Turnips

Red clover
Hairy Vetch
Field Peas
White Clover

Photos

Seed sources

Forage Turnips and Forage Rape Click to download printable PDF file.

The fall-seeded Brassicas, turnips and rape offer the benefit of weed suppression in the following crop  with quick decomposition after being turned under. Turnip and rape grow quickly and are good at reducing surface compaction while providing winter cover and fall weed suppression.

Land preparation   
Smooth seed bed weed free, well drained with enough moisture.

Seeding rate   
 Turnips
   Drill 4-7 lb/ac, 1/2 in deep.
   Broadcast 10-12 lb/ac, cover 1/2 – 3/4 in.
   Use the higher rate if fall weed suppression is the goal.
 Rape
   Drill 5-10 lb/ac, less than 3/4 in deep.
   Broadcast 8-14 lb/acii
   Cover up to 1 in. 
Seed can be no-tilled into suppressed sod or seeded into a conventionally prepared seed bed.  Till as necessary to kill the first flush of weeds to ensure a weed free seedbed. After seeding roll the ground to improve seed to soil contact but not to break up soil aggregates.

Seeding date   
August

Seed sources   
Ernst Conservation Seed , AMPAC Seed Company

Maintenance   
Avoid wet spots

Control   
Incorporate in Spring, any time before full flowering.

Tips   
These cover crops can harbor brassica diseases, do not use in rotation with brassicas. Useful for suppressing Sclerotinia in lettuce.