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Corn Growth and Development
https://agcrops.osu.edu/node/4409
for about 10 days. R2 Blister 266 1686 Occurs 10-14 days after R1; stress conditions, including ... R5 Dent – 1/2 milk line Occurs about 10 days after R5; 90% of total kernel dry matter ... (R2) 1 3 10 21 35 50 Dent (R4) 0 0 3 10 17 24 *Adapted from Corn Loss Instructions, NCIS publication ...
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Fertility Recommendations
https://agcrops.osu.edu/node/4423
cnrc.agron.iastate.edu/ . The background and justification for this approach is laid out in this regional publication ... : extension.iastate.edu/Publications/PM2015.pdf. Phosphorus and Potassium Application Methods Phosphorus and potassium are more straightforward ... agcrops.osu.edu/publications/tri-state-fertility-guide-corn-soybean-wheat-and-alfalfa and cnrc.agron.iastate.edu. Crop Rotations The corn-soybean rotation is by far the most common ...
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Seeding Depth
https://agcrops.osu.edu/node/4419
nodal roots develop about 1/2 to 3/4 inches below the soil surface. However at planting depths less than ... recent OSU research evaluating varying planting depth, grain yields were about 14 percent greater for the ...
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Production of Other Small Grain Species
https://agcrops.osu.edu/node/4396
publications at: estore.osu-extension.org/. ...
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Weed Control
https://agcrops.osu.edu/node/4393
offices and online at CFAES publications at: estore.osu-extension.org/. ...
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Growing Degree Day (GDD) Maturity Rating System
https://agcrops.osu.edu/node/4413
calculation method most commonly used for corn in the U.S. is the 86/50 cutoff method. GDD are calculated as ...
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Isolation Requirements for Identity Preserved (IP) Non-GMO Corn Production
https://agcrops.osu.edu/node/4427
U.S. In comparisons of open-pollinated varieties with hybrids in the Ohio Corn Performance Test, hybrid ...
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How Climate Affects Corn Production
https://agcrops.osu.edu/node/4407
slowly at about 50 degrees Fahrenheit, the first spring planting dates usually begin when the average air ... corn is about 10-inches tall and the probability of freezing temperatures greatly decreases. The loss ... system. When plants are very small (prior to six-leaf collar stage), they generally are killed after about ...
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How Climate Affects Corn Production
https://agcrops.osu.edu/node/4406
slowly at about 50 degrees Fahrenheit, the first spring planting dates usually begin when the average air ... corn is about 10-inches tall and the probability of freezing temperatures greatly decreases. The loss ... system. When plants are very small (prior to six-leaf collar stage), they generally are killed after about ...
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Date of Planting
https://agcrops.osu.edu/node/4418
conditions allow is usually safe. The latest practical date to plant corn ranges from about June 15 in ... across site years, yields decreased about 11 percent. For five of the 14 site years, yields of the later ... reduction in GDD requirement was about 6.5 GDDs. A hybrid rated at 2,800 GDDs with normal planting dates ...