NITROGEN MANAGEMENT WAS CRITICAL TO SUCCESSFUL SUGARBEET PRODUCTION SINCE THE CROP FIRST WAS GROWN IN THE RED RIVER Valley in 1918. Nitrogen management remains just as critical yet today. Many more tools are now available to fine tune your nitrogen management plan to maximize crop yield and quality, improve storage and increase factory efficiencies. Just as green manure crops and summer fallow disappeared as management options, fall applying 100% of your anticipated N needs may also have to change. You are strongly encouraged to carefully consider if change will benefit your farm business.
Establish a target total available nitrogen level for each field. Consider soil test residual N, plus expected N mineralization from organic matter, plus added fertilizer. Then adjust the side-dress N rate up or down based on these factors.
|Factor||Yield Impact||Sidedress N Rate|
|Excellent Stand Establishment||Increase||Increase|
|Poor Stand Establishment||Decrease||Decrease|
|Low Stored Soil Water||Decrease||Decrease|
|Soils at Field Capacity in the Spring||Increase||Increase|
|Low Quality Beet History||---------||Decrease|
|Low Yield History||---------||Increase|
|Heavy Soil Type||Decrease||Increase|
|Light Soil Type||Increase||Decrease|
|High Organic Matter||Increase||Decrease|
|Low Organic Matter||Decrease||Increase|
Zone soil testing and variable rate fertilization increases yield, quality and revenue per acre. Using multiple targets for zones for total available nitrogen increases revenue per acre compared to using only a single nitrogen rate target.
|Soil Test Type||RSA (lbs.)||Rev/A ($)|