Predicting Soil Nitrogen Availability for Maize Production in Brazil
Maize (<i>Zea mays</i> L.) is a crop widely cultivated in the state of São Paulo, and the sustainable management of nitrogen (N) nutrition is crucial to improving productivity and the environment, which calls for a reliable means of predicting potentially available soil N. A study was un...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Nitrogen |
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| Online Access: | https://www.mdpi.com/2504-3129/3/4/36 |
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| author | Lucas Boscov Braos Roberta Souto Carlos Fernando Kuhnen Manoel Evaristo Ferreira Richard Lesley Mulvaney Saeed Ahmad Khan Mara Cristina Pessôa da Cruz |
| author_facet | Lucas Boscov Braos Roberta Souto Carlos Fernando Kuhnen Manoel Evaristo Ferreira Richard Lesley Mulvaney Saeed Ahmad Khan Mara Cristina Pessôa da Cruz |
| author_sort | Lucas Boscov Braos |
| collection | DOAJ |
| description | Maize (<i>Zea mays</i> L.) is a crop widely cultivated in the state of São Paulo, and the sustainable management of nitrogen (N) nutrition is crucial to improving productivity and the environment, which calls for a reliable means of predicting potentially available soil N. A study was undertaken to evaluate and compare biological and chemical indices of potential N availability for a diverse set of 17 soils collected in the northwest region of São Paulo state. For this purpose, mineralization assays were performed at three distinct temperatures, and chemical assessments were carried out using the Illinois Soil Nitrogen Test (ISNT) and by fractionation of hydrolysable soil N. In addition, a greenhouse experiment was conducted to determine dry matter and N accumulation in the aboveground parts of maize plants. Potentially available N estimated by the incubation methods increased with increasing temperature and was strongly correlated with N uptake (<i>r</i> = 0.90). Hydrolysable N fractions varied widely among the soils studied and were more variable for amino sugar N than for other fractions. Potentially available N estimated by the ISNT was highly correlated with hydrolysable amino acid N and amino sugar N (<i>r</i> = 0.95–0.96) and also with plant dry matter accumulation (<i>r</i> = 0.82) and N uptake (<i>r</i> = 0.93). The ISNT has potential to improve fertilizer N recommendations for maize production in Brazil, provided that the test values are interpreted relative to an appropriate calibration database, planting density, and other factors affecting crop N requirement. |
| first_indexed | 2024-03-09T16:01:47Z |
| format | Article |
| id | doaj.art-e532a64058ad49cea861fd12fce9d3ab |
| institution | Directory Open Access Journal |
| issn | 2504-3129 |
| language | English |
| last_indexed | 2024-03-09T16:01:47Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nitrogen |
| spelling | doaj.art-e532a64058ad49cea861fd12fce9d3ab2023-11-24T17:06:29ZengMDPI AGNitrogen2504-31292022-10-013455556810.3390/nitrogen3040036Predicting Soil Nitrogen Availability for Maize Production in BrazilLucas Boscov Braos0Roberta Souto Carlos1Fernando Kuhnen2Manoel Evaristo Ferreira3Richard Lesley Mulvaney4Saeed Ahmad Khan5Mara Cristina Pessôa da Cruz6Department of Agricultural Production Sciences, School of Agricultural and Veterinarian Sciences São Paulo State University (Unesp), Jaboticabal, São Paulo 14884-900, BrazilDepartment of Agricultural Production Sciences, School of Agricultural and Veterinarian Sciences São Paulo State University (Unesp), Jaboticabal, São Paulo 14884-900, BrazilUniversidade Anhanguera de Dourados, Mato Grosso do Sul 79825-150, BrazilDepartment of Agricultural Production Sciences, School of Agricultural and Veterinarian Sciences São Paulo State University (Unesp), Jaboticabal, São Paulo 14884-900, BrazilDepartment of Natural Resources and Environmental Sciences, University of Illinois, Urbana, IL 61801, USADepartment of Natural Resources and Environmental Sciences, University of Illinois, Urbana, IL 61801, USADepartment of Agricultural Production Sciences, School of Agricultural and Veterinarian Sciences São Paulo State University (Unesp), Jaboticabal, São Paulo 14884-900, BrazilMaize (<i>Zea mays</i> L.) is a crop widely cultivated in the state of São Paulo, and the sustainable management of nitrogen (N) nutrition is crucial to improving productivity and the environment, which calls for a reliable means of predicting potentially available soil N. A study was undertaken to evaluate and compare biological and chemical indices of potential N availability for a diverse set of 17 soils collected in the northwest region of São Paulo state. For this purpose, mineralization assays were performed at three distinct temperatures, and chemical assessments were carried out using the Illinois Soil Nitrogen Test (ISNT) and by fractionation of hydrolysable soil N. In addition, a greenhouse experiment was conducted to determine dry matter and N accumulation in the aboveground parts of maize plants. Potentially available N estimated by the incubation methods increased with increasing temperature and was strongly correlated with N uptake (<i>r</i> = 0.90). Hydrolysable N fractions varied widely among the soils studied and were more variable for amino sugar N than for other fractions. Potentially available N estimated by the ISNT was highly correlated with hydrolysable amino acid N and amino sugar N (<i>r</i> = 0.95–0.96) and also with plant dry matter accumulation (<i>r</i> = 0.82) and N uptake (<i>r</i> = 0.93). The ISNT has potential to improve fertilizer N recommendations for maize production in Brazil, provided that the test values are interpreted relative to an appropriate calibration database, planting density, and other factors affecting crop N requirement.https://www.mdpi.com/2504-3129/3/4/36mineralizationIllinois Soil Nitrogen Test (ISNT)aerobic incubationsoil N fractionation |
| spellingShingle | Lucas Boscov Braos Roberta Souto Carlos Fernando Kuhnen Manoel Evaristo Ferreira Richard Lesley Mulvaney Saeed Ahmad Khan Mara Cristina Pessôa da Cruz Predicting Soil Nitrogen Availability for Maize Production in Brazil Nitrogen mineralization Illinois Soil Nitrogen Test (ISNT) aerobic incubation soil N fractionation |
| title | Predicting Soil Nitrogen Availability for Maize Production in Brazil |
| title_full | Predicting Soil Nitrogen Availability for Maize Production in Brazil |
| title_fullStr | Predicting Soil Nitrogen Availability for Maize Production in Brazil |
| title_full_unstemmed | Predicting Soil Nitrogen Availability for Maize Production in Brazil |
| title_short | Predicting Soil Nitrogen Availability for Maize Production in Brazil |
| title_sort | predicting soil nitrogen availability for maize production in brazil |
| topic | mineralization Illinois Soil Nitrogen Test (ISNT) aerobic incubation soil N fractionation |
| url | https://www.mdpi.com/2504-3129/3/4/36 |
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