Cowpeas Seed

Cowpeas are tolerant of low-fertility and moderately poor soils but perform best in well-drained loam or sandy loam with pH 5.5-7.0. They do not tolerate waterlogged conditions.

In no-till systems, large cowpea seed can push through moderate surface residue but benefits from row clearing if residue is heavy. In conventional till systems, disk and till to create a seedbed with adequate tilth for 1-2 inch seed placement.

Remove heavy crop residue or chop it into smaller pieces if broadcasting — very thick residue mats reduce seed-to-soil contact significantly.

Soil fertility should be adequate for basic plant growth; apply phosphorus if severely deficient, but do not apply nitrogen.

Drill at 30-60 lbs/acre at 1-2 inch depth using a standard grain drill. Broadcast at 40-80 lbs/acre and incorporate by discing to 1-2 inch depth or cultipacking firmly.

The seeding rate is high because cowpeas are large-seeded — the rate is in pounds, not seeds per square foot. Target stand density is 3-6 plants per square foot.

Inoculate with Bradyrhizobium (cowpea-compatible inoculant) before planting; in fields with soybean history in the last 5 years, inoculant may not be necessary but is inexpensive insurance.

For food plot use, a seeding rate of 25-40 lbs/acre is sufficient in smaller plots.

Germination occurs in 5-10 days in warm soil. Cowpea seedlings emerge vigorously and grow quickly under warm temperatures — plants will be 6-10 inches tall within 2-3 weeks of emergence.

Once established, they require minimal management: no nitrogen fertilizer, minimal irrigation in most rainfall environments, and no replanting.

Check root nodules at 4-6 weeks by pulling a plant and examining root tissue — pink to red interior nodules confirm active nitrogen fixation.

White or absent nodules indicate inoculant failure; apply liquid inoculant as a soil drench if early nodulation check shows absence.

For nitrogen credit, terminate cowpeas at pod-fill (60-90 days) before seed maturity, when nitrogen concentration in the biomass is highest. Incorporate by tillage or roller-crimp; cowpeas terminate easily because of soft stem tissue.

For food plot management, allow cowpeas to grow through pod-fill and leave the standing crop for wildlife access through fall — deer and turkey will work the field through the season.

If managing for dove, allow seed to mature and fall before discing lightly to expose seed on the soil surface.

In rotations where the field will be planted to a fall cash crop, terminate at least 2-3 weeks before the next planting to allow biomass decomposition.