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Mercer Laboratory

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  1. Fertilization

    https://agcrops.osu.edu/node/4389

    Nitrogen losses may be severe on applications prior to green-up and may cause significant yield reductions, ... regardless of nitrogen source. Significant yield losses may also occur if initial spring applications are ... delayed until after Feekes GS 6.  Split Applications and Nitrogen Source.  Split application may improve ...

  2. Weather Update: Coldest Christmas in Decades?

    https://agcrops.osu.edu/newsletter/corn-newsletter/2022-42/weather-update-coldest-christmas-decades

    conditions that have been present there most of the fall. According to the most recent U.S. Drought Monitor, ... about 52% of the state is experiencing abnormally dry to moderate drought conditions, down from 57% the ...

  3. Weed Control

    https://agcrops.osu.edu/node/4393

    Some wheat fields can benefit greatly from herbicide application, and failure to scout fields and take ... but herbicide application is occasionally warranted.  Specific chemical weed control recommendations ...

  4. 2023 Weed Control Guide

    https://agcrops.osu.edu/newsletter/corn-newsletter/2022-42/2023-weed-control-guide

    stock. The weed control guide is broken down by crop and application timing for easy navigation. Each ...

  5. Yield Potential and Stability

    https://agcrops.osu.edu/node/4414

    applications and use of more environmentally benign chemicals. Insect resistant hybrids contain a gene from ... soil insecticide treatments (rootworm) and post-emergent insecticide applications (corn borer), which ...

  6. 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 ...

  7. 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 ...

  8. 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 ...

  9. 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 ...

  10. 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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