Influence of Nitrogen Fertilization Rate on Soil Respiration: A Study Using a Rapid Soil Respiration Assay
Efficient nitrogen (N) management is one of the primary objectives of agronomic research as N is expensive and a major environmental pollutant. Soil microbes regulate N cycling and soil respiration (SR) measures soil microbial activity. The Comprehensive Assessment of Soil Health (CASH) soil respira...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-05-01
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| Series: | Nitrogen |
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| Online Access: | https://www.mdpi.com/2504-3129/2/2/14 |
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| author | Debankur Sanyal Johnathon Wolthuizen Anthony Bly |
| author_facet | Debankur Sanyal Johnathon Wolthuizen Anthony Bly |
| author_sort | Debankur Sanyal |
| collection | DOAJ |
| description | Efficient nitrogen (N) management is one of the primary objectives of agronomic research as N is expensive and a major environmental pollutant. Soil microbes regulate N cycling and soil respiration (SR) measures soil microbial activity. The Comprehensive Assessment of Soil Health (CASH) soil respiration protocol is a rapid test, and a study was designed to approve this test as a potential tool for corn (<i>Zea mays</i> L.) N management. Five locations were selected around South Dakota (SD) where corn received 0, 45, 90, and 180 kg N ha<sup>−1</sup> during summer of 2019. Soil samples were collected before planting and at the V6 corn growth stage to measure SR. We found that N fertilization increased SR and the highest SR was recorded at Ipswich (1.94 mg CO<sub>2</sub> g<sup>−1</sup>) while SR was lowest at Bushnell (1.45 mg CO<sub>2</sub> g<sup>−1</sup>). Higher SR was recorded at the sites where no-till farming was practiced, and soil had higher initial nitrate and organic matter content. SR was weakly correlated with corn grain yield, which indicated a potential area for future research. We concluded that split N application or an additional N application at a later growth stage might boost corn productivity in soil with higher microbial activity. |
| first_indexed | 2024-03-10T11:43:44Z |
| format | Article |
| id | doaj.art-caf0a0f648ed479ca3a2b032fca26d92 |
| institution | Directory Open Access Journal |
| issn | 2504-3129 |
| language | English |
| last_indexed | 2024-03-10T11:43:44Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nitrogen |
| spelling | doaj.art-caf0a0f648ed479ca3a2b032fca26d922023-11-21T18:18:35ZengMDPI AGNitrogen2504-31292021-05-012221822810.3390/nitrogen2020014Influence of Nitrogen Fertilization Rate on Soil Respiration: A Study Using a Rapid Soil Respiration AssayDebankur Sanyal0Johnathon Wolthuizen1Anthony Bly2Department of Agronomy, Horticulture and Plant Science, South Dakota State University, Brookings, SD 57007, USADepartment of Agronomy, Horticulture and Plant Science, South Dakota State University Extension, Brookings, SD 57007, USADepartment of Agronomy, Horticulture and Plant Science, South Dakota State University Extension, Sioux Falls, SD 57106, USAEfficient nitrogen (N) management is one of the primary objectives of agronomic research as N is expensive and a major environmental pollutant. Soil microbes regulate N cycling and soil respiration (SR) measures soil microbial activity. The Comprehensive Assessment of Soil Health (CASH) soil respiration protocol is a rapid test, and a study was designed to approve this test as a potential tool for corn (<i>Zea mays</i> L.) N management. Five locations were selected around South Dakota (SD) where corn received 0, 45, 90, and 180 kg N ha<sup>−1</sup> during summer of 2019. Soil samples were collected before planting and at the V6 corn growth stage to measure SR. We found that N fertilization increased SR and the highest SR was recorded at Ipswich (1.94 mg CO<sub>2</sub> g<sup>−1</sup>) while SR was lowest at Bushnell (1.45 mg CO<sub>2</sub> g<sup>−1</sup>). Higher SR was recorded at the sites where no-till farming was practiced, and soil had higher initial nitrate and organic matter content. SR was weakly correlated with corn grain yield, which indicated a potential area for future research. We concluded that split N application or an additional N application at a later growth stage might boost corn productivity in soil with higher microbial activity.https://www.mdpi.com/2504-3129/2/2/14soil respirationnitrogencorngrain yield |
| spellingShingle | Debankur Sanyal Johnathon Wolthuizen Anthony Bly Influence of Nitrogen Fertilization Rate on Soil Respiration: A Study Using a Rapid Soil Respiration Assay Nitrogen soil respiration nitrogen corn grain yield |
| title | Influence of Nitrogen Fertilization Rate on Soil Respiration: A Study Using a Rapid Soil Respiration Assay |
| title_full | Influence of Nitrogen Fertilization Rate on Soil Respiration: A Study Using a Rapid Soil Respiration Assay |
| title_fullStr | Influence of Nitrogen Fertilization Rate on Soil Respiration: A Study Using a Rapid Soil Respiration Assay |
| title_full_unstemmed | Influence of Nitrogen Fertilization Rate on Soil Respiration: A Study Using a Rapid Soil Respiration Assay |
| title_short | Influence of Nitrogen Fertilization Rate on Soil Respiration: A Study Using a Rapid Soil Respiration Assay |
| title_sort | influence of nitrogen fertilization rate on soil respiration a study using a rapid soil respiration assay |
| topic | soil respiration nitrogen corn grain yield |
| url | https://www.mdpi.com/2504-3129/2/2/14 |
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