EVALUATION OF SOIL TESTS FOR N REQUIREMENT OF MAIZE
Soil test methods for nitrate-N, total N and organic C were evaluated in the greenhouse, using 20 soils mostly from farmer's fields, in Nigeria. The results indicated that NO3-N was the best index of available N for a short 4-week period but the poorest under continuous cropping over eight week...
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The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria.
2020
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| Online adgang: | https://ija.oauife.edu.ng/index.php/ija/article/view/426 |
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| author | ADEBUSUYI, B. A. SOBULO, R. A. ADUAYI, E. A. |
| author_facet | ADEBUSUYI, B. A. SOBULO, R. A. ADUAYI, E. A. |
| author_sort | ADEBUSUYI, B. A. |
| collection | OJS |
| description | Soil test methods for nitrate-N, total N and organic C were evaluated in the greenhouse, using 20 soils mostly from farmer's fields, in Nigeria. The results indicated that NO3-N was the best index of available N for a short 4-week period but the poorest under continuous cropping over eight weeks. Total N and organic C values were superior to nitrate-N on long cropping system.
The three soil Nitrogen indices were also evaluated and calibrated in a field study on five bench mark soils for two seasons. The results indicated that NO3-N was correlated significantly with total N and organic C, and these were in turn correlated with relative yield in the field. Deficiency values were 20 ppm NO3-N, 0.11% total N and 1.26% C. Organic C and total N were highly correlated for the soils; therefore, it is possible to use either organic C or total N values for predicting response of crop to N application. |
| format | Online |
| id | oai:ojs2.ija.oauife.edu.ng:article-426 |
| institution | My University |
| language | eng |
| publishDate | 2020 |
| publisher | The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria. |
| record_format | ojs |
| spelling | oai:ojs2.ija.oauife.edu.ng:article-4262020-08-26T11:15:49Z EVALUATION OF SOIL TESTS FOR N REQUIREMENT OF MAIZE ADEBUSUYI, B. A. SOBULO, R. A. ADUAYI, E. A. Nitrate-N, greenhouse, available N, continuous cropping, organic carbon Soil test methods for nitrate-N, total N and organic C were evaluated in the greenhouse, using 20 soils mostly from farmer's fields, in Nigeria. The results indicated that NO3-N was the best index of available N for a short 4-week period but the poorest under continuous cropping over eight weeks. Total N and organic C values were superior to nitrate-N on long cropping system. The three soil Nitrogen indices were also evaluated and calibrated in a field study on five bench mark soils for two seasons. The results indicated that NO3-N was correlated significantly with total N and organic C, and these were in turn correlated with relative yield in the field. Deficiency values were 20 ppm NO3-N, 0.11% total N and 1.26% C. Organic C and total N were highly correlated for the soils; therefore, it is possible to use either organic C or total N values for predicting response of crop to N application. The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria. 2020-08-26 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://ija.oauife.edu.ng/index.php/ija/article/view/426 Ife Journal of Agriculture; Vol. 9 No. 1 (1987): Ife Journal of Agriculture; 16-30 0331-6351 eng https://ija.oauife.edu.ng/index.php/ija/article/view/426/311 Copyright (c) 2020 Ife Journal of Agriculture |
| spellingShingle | Nitrate-N, greenhouse, available N, continuous cropping, organic carbon ADEBUSUYI, B. A. SOBULO, R. A. ADUAYI, E. A. EVALUATION OF SOIL TESTS FOR N REQUIREMENT OF MAIZE |
| title | EVALUATION OF SOIL TESTS FOR N REQUIREMENT OF MAIZE |
| title_full | EVALUATION OF SOIL TESTS FOR N REQUIREMENT OF MAIZE |
| title_fullStr | EVALUATION OF SOIL TESTS FOR N REQUIREMENT OF MAIZE |
| title_full_unstemmed | EVALUATION OF SOIL TESTS FOR N REQUIREMENT OF MAIZE |
| title_short | EVALUATION OF SOIL TESTS FOR N REQUIREMENT OF MAIZE |
| title_sort | evaluation of soil tests for n requirement of maize |
| topic | Nitrate-N, greenhouse, available N, continuous cropping, organic carbon |
| topic_facet | Nitrate-N, greenhouse, available N, continuous cropping, organic carbon |
| url | https://ija.oauife.edu.ng/index.php/ija/article/view/426 |
| work_keys_str_mv | AT adebusuyiba evaluationofsoiltestsfornrequirementofmaize AT sobulora evaluationofsoiltestsfornrequirementofmaize AT aduayiea evaluationofsoiltestsfornrequirementofmaize |