author_facet Clark, Jason D.
Fernández, Fabián G.
Veum, Kristen S.
Camberato, James J.
Carter, Paul R.
Ferguson, Richard B.
Franzen, David W.
Kaiser, Daniel E.
Kitchen, Newell R.
Laboski, Carrie A. M.
Nafziger, Emerson D.
Rosen, Carl J.
Sawyer, John E.
Shanahan, John F.
Clark, Jason D.
Fernández, Fabián G.
Veum, Kristen S.
Camberato, James J.
Carter, Paul R.
Ferguson, Richard B.
Franzen, David W.
Kaiser, Daniel E.
Kitchen, Newell R.
Laboski, Carrie A. M.
Nafziger, Emerson D.
Rosen, Carl J.
Sawyer, John E.
Shanahan, John F.
author Clark, Jason D.
Fernández, Fabián G.
Veum, Kristen S.
Camberato, James J.
Carter, Paul R.
Ferguson, Richard B.
Franzen, David W.
Kaiser, Daniel E.
Kitchen, Newell R.
Laboski, Carrie A. M.
Nafziger, Emerson D.
Rosen, Carl J.
Sawyer, John E.
Shanahan, John F.
spellingShingle Clark, Jason D.
Fernández, Fabián G.
Veum, Kristen S.
Camberato, James J.
Carter, Paul R.
Ferguson, Richard B.
Franzen, David W.
Kaiser, Daniel E.
Kitchen, Newell R.
Laboski, Carrie A. M.
Nafziger, Emerson D.
Rosen, Carl J.
Sawyer, John E.
Shanahan, John F.
Agronomy Journal
Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests
Agronomy and Crop Science
author_sort clark, jason d.
spelling Clark, Jason D. Fernández, Fabián G. Veum, Kristen S. Camberato, James J. Carter, Paul R. Ferguson, Richard B. Franzen, David W. Kaiser, Daniel E. Kitchen, Newell R. Laboski, Carrie A. M. Nafziger, Emerson D. Rosen, Carl J. Sawyer, John E. Shanahan, John F. 0002-1962 1435-0645 Wiley Agronomy and Crop Science http://dx.doi.org/10.1002/agj2.20228 <jats:title>Abstract</jats:title><jats:p>The anaerobic potentially mineralizable N (PMN) test combined with the preplant (PPNT) and presidedress (PSNT) nitrate tests may improve corn (<jats:italic>Zea mays</jats:italic> L.) N fertilization predictions. Forty‐nine corn N response experiments (mostly corn following soybean [<jats:italic>Glycine max</jats:italic> (L.) Merr.]) were conducted in the U.S. Midwest from 2014–2016 to evaluate the ability of the PPNT and PSNT to predict corn relative yield (RY) and N fertilizer over‐ and under‐application rates when adjusted by PMN. Before planting and N fertilization, PPNT (0–30, 30–60, and 60–90 cm) and PMN (0–30 cm) samples were obtained. In‐season soil samples were obtained at the V5 development stage for PSNT (0–30, 30–60 cm) in all N rate treatments and PMN (0–30 cm) in only the 0 and 180 kg N ha<jats:sup>−1</jats:sup> preplant N treatments. Increasing NO<jats:sub>3</jats:sub>–N sampling depths beyond 30 cm with or without PMN improved RY predictability marginally (R<jats:sup>2</jats:sup> increase up to 0.20) and reduced over‐ and under‐application frequencies up to 14%. Including PMN (preplant only) with PPNT or PSNT improved RY predictability minimally (R<jats:sup>2</jats:sup> increase up to 0.10) only for coarse‐ and medium‐textured soils, but N fertilizer over‐ and under‐application frequencies were not substantially reduced (≤12%). These marginal improvements in RY predictability and N fertilizer over‐ and under‐application frequencies, regardless of the variables used (e.g., fertilization, sampling depth, soil texture, and growing degree‐day categories), demonstrate that including PMN with soil NO<jats:sub>3</jats:sub>–N alone does not improve corn N fertilization need predictions enough to recommend their use.</jats:p> Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests Agronomy Journal
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title Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests
title_unstemmed Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests
title_full Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests
title_fullStr Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests
title_full_unstemmed Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests
title_short Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests
title_sort adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests
topic Agronomy and Crop Science
url http://dx.doi.org/10.1002/agj2.20228
publishDate 2020
physical 3050-3064
description <jats:title>Abstract</jats:title><jats:p>The anaerobic potentially mineralizable N (PMN) test combined with the preplant (PPNT) and presidedress (PSNT) nitrate tests may improve corn (<jats:italic>Zea mays</jats:italic> L.) N fertilization predictions. Forty‐nine corn N response experiments (mostly corn following soybean [<jats:italic>Glycine max</jats:italic> (L.) Merr.]) were conducted in the U.S. Midwest from 2014–2016 to evaluate the ability of the PPNT and PSNT to predict corn relative yield (RY) and N fertilizer over‐ and under‐application rates when adjusted by PMN. Before planting and N fertilization, PPNT (0–30, 30–60, and 60–90 cm) and PMN (0–30 cm) samples were obtained. In‐season soil samples were obtained at the V5 development stage for PSNT (0–30, 30–60 cm) in all N rate treatments and PMN (0–30 cm) in only the 0 and 180 kg N ha<jats:sup>−1</jats:sup> preplant N treatments. Increasing NO<jats:sub>3</jats:sub>–N sampling depths beyond 30 cm with or without PMN improved RY predictability marginally (R<jats:sup>2</jats:sup> increase up to 0.20) and reduced over‐ and under‐application frequencies up to 14%. Including PMN (preplant only) with PPNT or PSNT improved RY predictability minimally (R<jats:sup>2</jats:sup> increase up to 0.10) only for coarse‐ and medium‐textured soils, but N fertilizer over‐ and under‐application frequencies were not substantially reduced (≤12%). These marginal improvements in RY predictability and N fertilizer over‐ and under‐application frequencies, regardless of the variables used (e.g., fertilization, sampling depth, soil texture, and growing degree‐day categories), demonstrate that including PMN with soil NO<jats:sub>3</jats:sub>–N alone does not improve corn N fertilization need predictions enough to recommend their use.</jats:p>
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author Clark, Jason D., Fernández, Fabián G., Veum, Kristen S., Camberato, James J., Carter, Paul R., Ferguson, Richard B., Franzen, David W., Kaiser, Daniel E., Kitchen, Newell R., Laboski, Carrie A. M., Nafziger, Emerson D., Rosen, Carl J., Sawyer, John E., Shanahan, John F.
author_facet Clark, Jason D., Fernández, Fabián G., Veum, Kristen S., Camberato, James J., Carter, Paul R., Ferguson, Richard B., Franzen, David W., Kaiser, Daniel E., Kitchen, Newell R., Laboski, Carrie A. M., Nafziger, Emerson D., Rosen, Carl J., Sawyer, John E., Shanahan, John F., Clark, Jason D., Fernández, Fabián G., Veum, Kristen S., Camberato, James J., Carter, Paul R., Ferguson, Richard B., Franzen, David W., Kaiser, Daniel E., Kitchen, Newell R., Laboski, Carrie A. M., Nafziger, Emerson D., Rosen, Carl J., Sawyer, John E., Shanahan, John F.
author_sort clark, jason d.
container_issue 4
container_start_page 3050
container_title Agronomy Journal
container_volume 112
description <jats:title>Abstract</jats:title><jats:p>The anaerobic potentially mineralizable N (PMN) test combined with the preplant (PPNT) and presidedress (PSNT) nitrate tests may improve corn (<jats:italic>Zea mays</jats:italic> L.) N fertilization predictions. Forty‐nine corn N response experiments (mostly corn following soybean [<jats:italic>Glycine max</jats:italic> (L.) Merr.]) were conducted in the U.S. Midwest from 2014–2016 to evaluate the ability of the PPNT and PSNT to predict corn relative yield (RY) and N fertilizer over‐ and under‐application rates when adjusted by PMN. Before planting and N fertilization, PPNT (0–30, 30–60, and 60–90 cm) and PMN (0–30 cm) samples were obtained. In‐season soil samples were obtained at the V5 development stage for PSNT (0–30, 30–60 cm) in all N rate treatments and PMN (0–30 cm) in only the 0 and 180 kg N ha<jats:sup>−1</jats:sup> preplant N treatments. Increasing NO<jats:sub>3</jats:sub>–N sampling depths beyond 30 cm with or without PMN improved RY predictability marginally (R<jats:sup>2</jats:sup> increase up to 0.20) and reduced over‐ and under‐application frequencies up to 14%. Including PMN (preplant only) with PPNT or PSNT improved RY predictability minimally (R<jats:sup>2</jats:sup> increase up to 0.10) only for coarse‐ and medium‐textured soils, but N fertilizer over‐ and under‐application frequencies were not substantially reduced (≤12%). These marginal improvements in RY predictability and N fertilizer over‐ and under‐application frequencies, regardless of the variables used (e.g., fertilization, sampling depth, soil texture, and growing degree‐day categories), demonstrate that including PMN with soil NO<jats:sub>3</jats:sub>–N alone does not improve corn N fertilization need predictions enough to recommend their use.</jats:p>
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spelling Clark, Jason D. Fernández, Fabián G. Veum, Kristen S. Camberato, James J. Carter, Paul R. Ferguson, Richard B. Franzen, David W. Kaiser, Daniel E. Kitchen, Newell R. Laboski, Carrie A. M. Nafziger, Emerson D. Rosen, Carl J. Sawyer, John E. Shanahan, John F. 0002-1962 1435-0645 Wiley Agronomy and Crop Science http://dx.doi.org/10.1002/agj2.20228 <jats:title>Abstract</jats:title><jats:p>The anaerobic potentially mineralizable N (PMN) test combined with the preplant (PPNT) and presidedress (PSNT) nitrate tests may improve corn (<jats:italic>Zea mays</jats:italic> L.) N fertilization predictions. Forty‐nine corn N response experiments (mostly corn following soybean [<jats:italic>Glycine max</jats:italic> (L.) Merr.]) were conducted in the U.S. Midwest from 2014–2016 to evaluate the ability of the PPNT and PSNT to predict corn relative yield (RY) and N fertilizer over‐ and under‐application rates when adjusted by PMN. Before planting and N fertilization, PPNT (0–30, 30–60, and 60–90 cm) and PMN (0–30 cm) samples were obtained. In‐season soil samples were obtained at the V5 development stage for PSNT (0–30, 30–60 cm) in all N rate treatments and PMN (0–30 cm) in only the 0 and 180 kg N ha<jats:sup>−1</jats:sup> preplant N treatments. Increasing NO<jats:sub>3</jats:sub>–N sampling depths beyond 30 cm with or without PMN improved RY predictability marginally (R<jats:sup>2</jats:sup> increase up to 0.20) and reduced over‐ and under‐application frequencies up to 14%. Including PMN (preplant only) with PPNT or PSNT improved RY predictability minimally (R<jats:sup>2</jats:sup> increase up to 0.10) only for coarse‐ and medium‐textured soils, but N fertilizer over‐ and under‐application frequencies were not substantially reduced (≤12%). These marginal improvements in RY predictability and N fertilizer over‐ and under‐application frequencies, regardless of the variables used (e.g., fertilization, sampling depth, soil texture, and growing degree‐day categories), demonstrate that including PMN with soil NO<jats:sub>3</jats:sub>–N alone does not improve corn N fertilization need predictions enough to recommend their use.</jats:p> Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests Agronomy Journal
spellingShingle Clark, Jason D., Fernández, Fabián G., Veum, Kristen S., Camberato, James J., Carter, Paul R., Ferguson, Richard B., Franzen, David W., Kaiser, Daniel E., Kitchen, Newell R., Laboski, Carrie A. M., Nafziger, Emerson D., Rosen, Carl J., Sawyer, John E., Shanahan, John F., Agronomy Journal, Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests, Agronomy and Crop Science
title Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests
title_full Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests
title_fullStr Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests
title_full_unstemmed Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests
title_short Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests
title_sort adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests
title_unstemmed Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests
topic Agronomy and Crop Science
url http://dx.doi.org/10.1002/agj2.20228