How to Grow DK 145 (Corn Hybrid)
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DK 145 (Corn Hybrid)
Zea mays L.
vegetableDK 145 is a medium-maturity dent corn hybrid developed by Dekalb (now part of Corteva Agriscience), designed for grain production with excellent agronomic performance. This hybrid combines strong yield potential with good standability and disease resistance. It is widely used in commercial corn production across North America.
When should you plant DK 145 (Corn Hybrid) in your zone?
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Example DK 145 (Corn Hybrid) timeline · Pittsburgh, PA (Zone 6b)
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Plant DK 145 (Corn Hybrid)
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest DK 145 (Corn Hybrid)
Around Aug 5≈ 110 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact DK 145 (Corn Hybrid) dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 4-8, suitable for much of the Corn Belt
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Germination & Emergence
7-14 daysSeeds absorb moisture and germinate underground; first shoot (coleoptile) pushes through soil. Seedling emerges with first leaves visible.
Ensure consistent soil moisture (not waterlogged). Soil temperature should be at least 50°F, ideally 60°F+. Protect from birds and cutworms if needed.
Vegetative Growth (V1-V10)
4-6 weeksPlant develops true leaves and strong root system. Height increases rapidly. Plant is vulnerable to herbicide application during this phase.
Apply pre-emergent or post-emergent herbicides early to control weeds. Maintain consistent water supply. Monitor for early pest pressure (armyworms, flea beetles). Begin nitrogen fertilization if not applied pre-plant.
Tassel Emergence & Pollination (VT-R1)
2-3 weeksMale flowers (tassel) form at plant top; female flowers (silks) emerge from ear nodes. Silks elongate as pollination begins.
CRITICAL: Ensure adequate water during this period (1.5 inches/week). Silks must be pollinated for kernel development. Monitor for silk flies and other pollinators. Avoid herbicide application near silking.
Kernel Development & Grain Fill (R2-R6)
5-7 weeksKernels develop and fill with starch and nutrients. Cobs harden. Plant redirects all energy to grain production. Leaves yellow and senesce gradually.
Maintain water availability (1-1.5 inches/week early in grain fill, less later). Support plant if needed to prevent lodging in high-wind areas. Watch for late-season diseases (leaf blights, stalk rot). Resist urge to harvest early.
Physiological Maturity & Harvest Readiness (R6-R7)
1-2 weeksBlack layer forms at kernel base; moisture content drops to 15-25%. Plant is fully mature and ready for harvest. Leaves are brown and dry.
Monitor moisture content of grain (target <20% for safe storage). Harvest when grain moisture is 15-20% to minimize grain damage. Store in dry, cool conditions to prevent mold.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Bt corn varieties, insecticide sprays if threshold exceeded (4+ egg masses per 100 plants), crop rotation, removal of crop residue
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Crop rotation (avoid continuous corn), Bt corn varieties, soil insecticides at planting, parasitic wasps (natural biological control)
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Bt corn, insecticide spray when defoliating larvae present, monitor early morning in whorls, pheromone traps
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Bt corn, insecticide sprays at silk emergence if threshold of 1+ egg per 5 ears, timing critical at pollination
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Insecticidal seed treatments, foliar insecticides if damage exceeds 20% of seedling leaves
Uses
Grain & Processed Foods
CulinaryDK 145 dent corn is primarily used as animal feed, corn meal, corn flour, and for processed foods like cereals, snacks, and sweeteners. It is the foundation grain for livestock nutrition and industrial food products. [source]
Biofuel Production
HouseholdCorn grain from DK 145 is a primary feedstock for ethanol production in fuel refineries. Fermented corn produces ethanol used as a gasoline additive and renewable fuel source. [source]
Animal Feed & Livestock Nutrition
HouseholdA staple ingredient in formulated feeds for cattle, poultry, swine, and other livestock. High starch content provides energy; also ground for meal and mixed into complete rations. [source]
Wildlife Food Source
WildlifeCorn fields and grain left in fields provide essential fall and winter food for migrating waterfowl, deer, and wild birds. Crop residue supports ecosystem biodiversity. [source]
Cornmeal & Baking
CulinaryGround dent corn produces cornmeal used in polenta, cornbread, tortillas, and other traditional baked goods and ethnic cuisines worldwide. [source]
Harvest Tips
Harvest when grain moisture is 15-20% to minimize kernel breakage and reduce drying costs. Typically harvest 115-120 days after planting. Adjust combine settings for DK 145 variety to reduce grain loss. Store grain at moisture <13% for long-term storage, cool temperatures preferred. Field should be dry enough for equipment to avoid compaction and ruts.
Fun Facts
- 🌱 DK 145 is a medium-maturity hybrid released by Dekalb Genetics, now Corteva Agriscience, and remains one of the most widely planted hybrids in the U.S. Corn Belt due to its reliable performance and yield stability.
- 🌱 Corn pollen must land on a silk strand within 24 hours of that silk emerging for pollination to occur; a single ear can have over 1,000 silks, each requiring pollination for full kernel set.
- 🌱 The 'Dk' designation in seed company naming traditionally stood for 'Dekalb Corn,' and the '145' refers to its relative maturity (approximately 2,450 growing degree days needed to reach physiological maturity), making it suitable for regions with 110-115 frost-free days.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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