Nitrogen‐15 evaluation of fertilizer placement at planting for corn production von Griesheim, Kelsey L., Mulvaney, Richard L., Smith, Tim J., Hertzberger, Allan J.

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Isotopic comparison of ammonium and nitrate sources applied in‐season to corn von Griesheim, Kelsey L., Mulvaney, Richard L., Smith, Tim J., Nunes, Vander L. N., Hertzberger, Allan J.

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Nitrogen‐15 Evaluation of Fall‐Applied Anhydrous Ammonia: I. Efficiency of Nitrogen Uptake by Corn von Griesheim, Kelsey L., Mulvaney, Richard L., Smith, Tim J., Henning, Shelby W., Hertzberger, Allan J.

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