Using the Haney Soil Test to Predict Nitrogen Requirements in Winter Wheat (<i>Triticum aestivum</i> L.)
Managing nitrogen (N) is one of the of the biggest challenges in achieving environmental and economic sustainability in the agroecosystem. As N fertilizer prices have increased significantly, farmers are considering a revised N recommendation to optimize crop production, while addressing negative en...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Nitrogen |
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| Online Access: | https://www.mdpi.com/2504-3129/3/2/24 |
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| author | Debankur Sanyal Christopher Graham |
| author_facet | Debankur Sanyal Christopher Graham |
| author_sort | Debankur Sanyal |
| collection | DOAJ |
| description | Managing nitrogen (N) is one of the of the biggest challenges in achieving environmental and economic sustainability in the agroecosystem. As N fertilizer prices have increased significantly, farmers are considering a revised N recommendation to optimize crop production, while addressing negative environmental impacts of excess N in water bodies. This study analyzes the accuracy of using the Haney Soil Test (HST) to predict the N requirement (HSTNR) of winter wheat (<i>Triticum aestivum</i> L.) in a semi-arid climate. The accuracy of the HST to predict the economically optimum N rate (EONR) was dependent on in-season precipitation. In drought conditions, the HSTNR was 33 kg N ha<sup>−1</sup> lower on average than the EONR. Conversely, in wetter years, the HSTNR was 35 kg N ha<sup>−1</sup> higher than the EONR. Net return was approximately USD 19 ha<sup>−1</sup> lower than that with the EONR under both precipitation scenarios. Similar differences were found for protein content. There was a strong correlation between soil respiration and the soil health calculation, within the HST, and the difference between the net return on yield from the HSTNR and the EONR yield. These indicators may serve as useful metrics for formulating soil health-based N recommendations in winter wheat. However, in drought-prone areas, the HSTNR may significantly underpredict the EONR in many years due to an overestimation of N mineralization. |
| first_indexed | 2024-03-09T22:51:42Z |
| format | Article |
| id | doaj.art-cc6c704ab4984ac2bd0f663ad4ba8bb0 |
| institution | Directory Open Access Journal |
| issn | 2504-3129 |
| language | English |
| last_indexed | 2024-03-09T22:51:42Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nitrogen |
| spelling | doaj.art-cc6c704ab4984ac2bd0f663ad4ba8bb02023-11-23T18:19:21ZengMDPI AGNitrogen2504-31292022-06-013237638610.3390/nitrogen3020024Using the Haney Soil Test to Predict Nitrogen Requirements in Winter Wheat (<i>Triticum aestivum</i> L.)Debankur Sanyal0Christopher Graham1Department of Environmental Science, College of Agriculture and Life Science, University of Arizona, Tucson, AZ 85721, USADepartment of Agronomy, Horticulture and Plant Science, South Dakota State University Extension West River Ag Center, Rapid City, SD 57703, USAManaging nitrogen (N) is one of the of the biggest challenges in achieving environmental and economic sustainability in the agroecosystem. As N fertilizer prices have increased significantly, farmers are considering a revised N recommendation to optimize crop production, while addressing negative environmental impacts of excess N in water bodies. This study analyzes the accuracy of using the Haney Soil Test (HST) to predict the N requirement (HSTNR) of winter wheat (<i>Triticum aestivum</i> L.) in a semi-arid climate. The accuracy of the HST to predict the economically optimum N rate (EONR) was dependent on in-season precipitation. In drought conditions, the HSTNR was 33 kg N ha<sup>−1</sup> lower on average than the EONR. Conversely, in wetter years, the HSTNR was 35 kg N ha<sup>−1</sup> higher than the EONR. Net return was approximately USD 19 ha<sup>−1</sup> lower than that with the EONR under both precipitation scenarios. Similar differences were found for protein content. There was a strong correlation between soil respiration and the soil health calculation, within the HST, and the difference between the net return on yield from the HSTNR and the EONR yield. These indicators may serve as useful metrics for formulating soil health-based N recommendations in winter wheat. However, in drought-prone areas, the HSTNR may significantly underpredict the EONR in many years due to an overestimation of N mineralization.https://www.mdpi.com/2504-3129/3/2/24nitrogen recommendationeconomically optimum nitrogen rate (EONR)Haney soil test nitrogen requirement (HSTNR)protein contentsoil health |
| spellingShingle | Debankur Sanyal Christopher Graham Using the Haney Soil Test to Predict Nitrogen Requirements in Winter Wheat (<i>Triticum aestivum</i> L.) Nitrogen nitrogen recommendation economically optimum nitrogen rate (EONR) Haney soil test nitrogen requirement (HSTNR) protein content soil health |
| title | Using the Haney Soil Test to Predict Nitrogen Requirements in Winter Wheat (<i>Triticum aestivum</i> L.) |
| title_full | Using the Haney Soil Test to Predict Nitrogen Requirements in Winter Wheat (<i>Triticum aestivum</i> L.) |
| title_fullStr | Using the Haney Soil Test to Predict Nitrogen Requirements in Winter Wheat (<i>Triticum aestivum</i> L.) |
| title_full_unstemmed | Using the Haney Soil Test to Predict Nitrogen Requirements in Winter Wheat (<i>Triticum aestivum</i> L.) |
| title_short | Using the Haney Soil Test to Predict Nitrogen Requirements in Winter Wheat (<i>Triticum aestivum</i> L.) |
| title_sort | using the haney soil test to predict nitrogen requirements in winter wheat i triticum aestivum i l |
| topic | nitrogen recommendation economically optimum nitrogen rate (EONR) Haney soil test nitrogen requirement (HSTNR) protein content soil health |
| url | https://www.mdpi.com/2504-3129/3/2/24 |
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