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Cover Crops for Vegetable Growers

Why cover crops?
Soil Health

Decision Tool

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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

Spring mustard     Click to download printable PDF file

In the Northeast yellow mustard is used as a spring-planted cover crop before regular season vegetables, particularly for reducing root rot.  It also adds organic matter, breaks up hardpan and suppress weeds in the following crop. 

Land preparation
Firm seed bed free of weeds to ensure a good stand. Available nitrogen levels at 120 lb N/ac. May require sulfur application at 6:1 N:S. Vegetable land often has sufficient nutrients.

Seeding rate
Drill 10-12 lb/ac with grass seeder.
Broadcast 10-15 lb/ac. Cover 1/2 in. After seeding roll the ground to improve seed to soil contact but not to break up soil aggregates.

Seeding date
April. Can also be frost seeded in March or early April.

Seed sources
Rupp Seeds (Caliente), MinnDak Growers  (Tilney)

Maintenance
None

Control
Do not let mustards go to seed.
Incorporate at flowering (mid-late May).
For better disease suppression, flail mow into fine pieces and incorporate immediately. Press lightly to contain biofumigant. Works

Tips
Do not use in rotations with other Brassicas.
If used as a biofumigant, allow it to work for 1-2 weeks before preparing to plant.