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Soybean Seeding Rates
January 2012



By William J. Cox, Ph.D.
Professor and Crop Scientist,
Cornell University
Phone: 607-255-1758
Email:wjc3@cornell.edu

 

Executive Summary
(4 min 47 sec)
 

Full Presentation
(18 min 33 sec)
 

 

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Summary:

This presentation will help consultants, growers, and other practitioners in the Northeast USA region recommend or select seeding rates for soybean production. We will present studies (small plot and field-scale) that show optimum yields averaged about 200,000 seeds/acre for soybeans in rows of 7.5 inches (drilled), 15 and 30-inches (row crop planter) in the 1990s but now average about 170,000 seeds/acre for untreated and about 140,000 seeds/acre for treated (seed-applied insecticide/fungicide) seed. We did find subtle location by seed treatment by seeding rate interactions so we urge all farmers to conduct their own on-farm tests to fine-tune their seeding rates for each field on their farm.


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Responsibility:

United Soybean Board (USB) farmer-leaders develop and maintain partnerships with U.S. land grant universities and U.S. ag-focused research organizations such as the Plant Management Network to increase the transfer of checkoff-funded applied and practical production research information to U.S. soybean farmers. USB neither recommends nor discourages the implementation of any advice contained herein, and is not liable for the use or misuse of the information provided.

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