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Curt Arens
Nebraska Extension specialists offer suggestions to get applications right.
Javed Iqbal, Laila Puntel, Bijesh Maharjan, Charles Wortmann | Apr 28, 2021
Suggested Event
Aug 31, 2021 to Sep 02, 2021
The amount of fertilizer-nitrogen to be applied in-season can be estimated with the Late Spring Soil Nitrate Test, crop canopy reflectance sensing, or by use of crop model N tools, combined with fertigation.
Late Spring Soil Nitrate Test
LSNT has been available for more than 30 years and is used for corn production to assess the need for in-season N application. It has been less studied and used in Nebraska than in Iowa, and we advise the use of the Iowa State University guidelines. LSNT has been well-validated for medium and fine texture soils, but it is not expected to work well for sandy soil. Use this test as follows: ....

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