Farm Progress is part of the Informa Markets Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Serving: United States

Nutrient Master Class outlines 300-bushel corn

During the recent Nutrient Master Classes in Nebraska and Iowa, sponsored by Wolf Trax and Corn+Soybean Digest, two passionate soil and agronomy researchers wowed the crowds with their prescriptions for achieving 300-bushel corn.

Tom McGraw, a soil guru who built Midwest Independent Soil Samplers into the largest soil sampling company in North America, was a pioneer in precision ag mapping. In his talk entitled “300-bushel corn,” he outlined his keys to hit this high yield mark:

·      Be willing to change and improve.

·      Make an investment in time and information.

·      Profitable high yields depends on input prices, marketing skills, leverage, risk management and more.

·      Water management is number one – drainage, irrigation.

·      Stop compaction that robs yields – vertical tillage.

·      Build soil health – OM, earthworms, cover crops, erosion control, manure.

·      Geo-referenced zone soil sampling – electrical conductivity maps.

·      Reduce crop stress with variable-rate irrigation.

·      Create management productivity zones with independent yield goals.

·      Vary seeding and nitrogen rates – electrical conductivity maps.

·      Use biotech traits to reduce crop stress.

·      Develop a nitrogen action plan for every field.

·      Apply P & K as needed.

·      Layer data for information analysis.

·      Aggressive scouting for insects, diseases.

·      Zinc and sulfur are important micronutrients.

·      Residue management.


McGraw concluded his presentation by emphasizing the importance of the 4R nutrient stewardship (Right source, Right rate, Right time, Right place) and encouraged growers to always apply best management practices to achieve top yields.


To learn more, view his presentation (large pdf).

TAGS: Corn
Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.