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New or Updated Sulfur Soil Test, Site-Specific Farming and Soil Sampling Publications (06/28/18)

Several of NDSU crop-specific fertility recommendation circulars state that the sulfur soil test is near useless to predict whether a crop will respond to S or not.

New or Updated Sulfur Soil Test, Site-Specific Farming and Soil Sampling Publications

Several of NDSU crop-specific fertility recommendation circulars state that the sulfur soil test is near useless to predict whether a crop will respond to S or not. A one-of-a-kind publication, ‘Limitations of the Sulfate-sulfur Soil Test as a Predictor of Sulfur Response (SF1880), is now available. This publication was developed under the USDA-NCERA13 Soil Testing Committee and it will be linked to their website at University of Missouri.

A recently updated SF990, ‘Soil Sampling as a Basis for Fertility Recommendations’ is also available. This circular contains information on sampling depth, grid/zone sampling strategies for North Dakota, and recent results from our potassium soil testing work.

Finally, SF1176-3 and SF1176-4, in the soils-related site-specific series of the use of yield monitor data and the economic and environmental benefits of site-specific field management have also been completely revised and are available. It will be interesting for readers to see that North Dakota farmers have gained the most from site-specific management based on a recent survey by USDA. This is probably due to the irregular boundaries of many fields west of the Valley (use of auto-steer and automatic boom/seeder shutoffs), the use of site-specific fertilizer management in crops where quality (oil content, sugar concentration, grain protein content) is considered in crop marketing, and because site-specific based fertility recommendations have a deeper research foundation in North Dakota compared to those in most states.

Dave Franzen

Extension Soil Specialist

701-799-2565

This site is supported in part by the Crop Protection and Pest Management Program [grant no. 2017-70006-27144/accession 1013592] from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed are those of the website author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.

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