Triticale

Triticale (×Triticosecale), a wheat × rye hybrid, is a cool‑season cereal chosen as a cover crop for its vigorous fall growth, winter hardiness, and dense, fibrous root system. Growers value triticale for dependable erosion control, strong spring biomass for weed suppression or forage, and excellent scavenging of residual nitrogen. Oregon State Univ. Forage Information System, Ohio State Univ. Extension—Ohioline.

• Erosion Control: Non‑legume covers such as rye, ryegrass, triticale, barley, and wheat have reduced soil loss 31–100% compared with no cover; in Missouri no‑till silage corn with a rye/wheat cover saw soil loss drop from 9.8 to 0.4 ton/acre/year. Triticale delivers similar protection as a small‑grain grass. SARE—Ecosystem Services: Erosion, SARE—Managing Cover Crops in Conservation Tillage Systems.
• Weed Suppression: High‑biomass small‑grain covers suppress winter/spring weeds; in Kansas, fall‑planted triticale or triticale–hairy vetch cut kochia density 78–94% and biomass up to 98% vs. chemical fallow. For most systems, aim for ≥4,000 lb/acre cover crop dry matter to achieve strong suppression. Crop, Forage & Turfgrass Mgmt. (Petrosino et al., 2015), Penn State Extension—Suppressing Weeds Using Cover Crops. Recent research in the semiarid Great Plains (2019–2022) also found fall‑planted mixes with triticale reduced total weed density 34–81% compared with chemical fallow when paired with residual herbicides. Weed Science (2024).
• Soil Structure Improvement: Triticale’s dense fibrous roots increase aggregation and pore continuity, improving tilth. Winter cereals including triticale commonly root 0.9–1.8 m (3–6 ft) deep where moisture allows, enhancing macropores for infiltration and trafficability. Plant & Soil (Ben‑Ghedalia et al., 1996), SARE—Building Soils for Better Crops, Ch. 10.
• Water Management: Cover crops increase rainfall infiltration by 8–462% across systems and reduce runoff; winter cereals can also lower tile drainage 9–11% in upper Midwest studies. SARE—Increasing Infiltration, Univ. of Minnesota—MOSH.
• Disease/Pest Break: As a non‑legume cereal, triticale is a non‑host or poor host for key broadleaf pests such as soybean cyst and root‑knot nematodes, helping interrupt pest cycles; cereal covers have reduced SCN populations 44–67% in microplot studies, and high‑residue small‑grain mulches can lower root‑knot damage in cotton. Note: triticale can host root‑lesion nematode (Pratylenchus penetrans); check local nematode pressure before following with susceptible crops. Plant Disease (2020), UF/IFAS—Root‑Knot Nematodes & Cover Crops, Ohio State Univ.—Ohioline.
• Nitrogen Management (scavenging): Small‑grain covers take up residual N effectively. Each ton of small‑grain biomass contains roughly 60–70 lb N; early‑planted triticale in NY accumulated ≈62 lb N/acre by late fall, while vigorous winter cereals often accumulate 100–120+ lb N/acre by late spring (site‑ and timing‑dependent). Cornell—What’s Cropping Up?, Univ. of Nebraska–Lincoln (2023), Penn State Extension—Cereal Rye as a Cover Crop.
• Biomass Production: Typical triticale cover‑crop dry matter is 2,000–5,000 lb/acre/year depending on planting date, moisture, and termination timing; variety trials in the Northeast and Southeast commonly report 1–2.5 ton DM/acre by boot stage under good conditions. Ohio State Univ.—Ohioline, SARE Project LNE15‑340 (VT/MA), Alabama Cooperative Extension (2022 demo data).

• Seeding Rate (pure stand; adjust downward 25–50% in mixes):
• Drill: 40–90 lb/acre (typical 60–70 lb/acre for cover; use the high end for late seedings or grazing). Ohio State Univ.—Ohioline, Univ. of Missouri Extension.
• Broadcast: 45–100 lb/acre (use higher end without incorporation). Ohio State Univ.—Ohioline, Univ. of Missouri Extension.
• Seeding Depth: Drill 0.75–1.5 inch; acceptable range 0.5–2 inches depending on soil moisture and texture. If broadcasting, lightly incorporate or roll for seed‑to‑soil contact. Ohio State Univ.—Ohioline, Univ. of Wisconsin Extension, LSU AgCenter (2024).
• Soil Type and pH: Best on well‑ to moderately‑well‑drained soils; tolerates brief flooding only. pH tolerance is broad (≈5.1–8.4), though many guides target 6.0–7.0 for optimum performance. Moderately salt‑tolerant compared to other cereals. Oregon State Univ. Forage Information System, Ohio State Univ.—Ohioline.
• Planting Time (fall planting for winter triticale—use local tools for county‑specific dates):
• Upper Midwest/Great Lakes (MN, WI, IA, MI, OH): late August–October; in Ohio, Aug. 15–Nov. 1 is a reliable window. Iowa State Univ. Extension, Ohio State Univ.—Ohioline, Univ. of Minnesota Extension (reviewed 2024).
• Great Plains: generally early–late September; e.g., eastern Nebraska mid–late September; central Kansas Sept. 1–25. Univ. of Nebraska–Lincoln, K‑State Research & Extension—Riley Co..
• Northeast/Northern New England: plant ≈45 days before first frost where winter types are adapted; spring triticale is an option where winter types lack hardiness. Univ. of Maine Extension.
• Mid‑South (LA/AR/MS/TN): fall establishment as soils cool; minimum germination ≈38°F; depth ½–1½ inch. LSU AgCenter (2024).
• Southeast (NC/VA/SC/GA): mountains Aug. 15–Sept. 30; Piedmont Sept. 15–Oct. 15; Coastal Plain Sept. 30–Nov. 15 (possible to Dec. 15, with reduced protection). NC State Extension—Winter Annual Cover Crops.
• Use regional selector tools for precise county windows (e.g., Midwest Cover Crops Council). ISU/ICM News 2025 on MCCC update.
• Termination (pick a method suited to your cash crop and equipment):
• Herbicide: Burn down before corn (common practice is 10–14 days pre‑plant to reduce N tie‑up and insect issues; apply starter N 30–50 lb/acre at planting if needed). Michigan State Univ. Extension.
• Roller‑crimp: For small grains (including triticale), target anthesis to soft‑dough for reliable kill and a persistent mulch; rolling too early risks regrowth, too late risks viable seed. Southern Cover Crops Council, Univ. of Nebraska–Lincoln, SARE—Termination Guidance.
• Tillage: Effective but may require multiple passes to fully terminate; reduces surface mulch longevity. Ohio State Univ.—Ohioline.
• Planting green: Common before soybean—terminate at or just after planting to maximize residue for weed suppression; terminate earlier before corn. Michigan State Univ. Extension.
• Rotational Considerations:
• Following corn: terminate earlier and/or supply starter N to offset temporary N immobilization from high‑C residues; avoid planting corn “into green” triticale without a plan for N and insects. Michigan State Univ. Extension.
• Following soybeans or ahead of soybean: later termination can maximize biomass for weed suppression (“planting green” is common). Michigan State Univ. Extension.
• Nematodes: triticale is a non‑host/poor host for SCN and root‑knot (useful in soybean rotations), but can host root‑lesion nematode (P. penetrans). Avoid preceding highly susceptible crops where root‑lesion pressure is high; sample if concerned. Ohio State Univ.—Ohioline, UF/IFAS, Plant Disease (2020).
• Volunteer risk: avoid very late termination (beyond soft‑dough) to prevent viable seed set, which can lead to volunteers in the cash crop. Southern Cover Crops Council.
• Water Requirements & Drought Tolerance:
• Triticale is generally rated “good” for drought tolerance in cover‑crop guides and has broader abiotic stress tolerance than wheat, though it grows best under cool conditions and is only tolerant of brief flooding. Ohio State Univ.—Ohioline, NC State Extension, Oregon State Univ. Forage Information System.
• Management note: Earlier fall planting increases water‑use efficiency and overall biomass/N uptake; balance spring growth with available soil moisture before cash‑crop planting. UC ANR Small Grains, Cornell—What’s Cropping Up?.

Practical tips:

• Drill as early as your rotation allows to maximize fall tillering and spring biomass; use higher seeding rates for late plantings or intended grazing/forage use. Ohio State Univ.—Ohioline, Univ. of Missouri Extension.
• For strong weed suppression in organic/no‑till, allow triticale to reach anthesis and terminate with a roller‑crimper; match planter and row cleaners to heavy residue. Southern Cover Crops Council, Univ. of Nebraska–Lincoln.
• If planting corn after triticale, terminate earlier and consider starter nitrogen to avoid early‑season N tie‑up. Michigan State Univ. Extension.

Note on regional adaptation and dates: Always confirm county‑specific dates and program compliance (NRCS 340) with local Extension/NRCS tools (e.g., Midwest Cover Crops Council selector and your state NRCS eFOTG). ISU—MCCC tool update (2025), USDA–NRCS Iowa fact sheets hub (includes triticale, 2025).