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Longterm assessment of nitrogen and variety technologies on attainable maize yields in Nigeria using CERESmaize

Maize simulation models are proposed as tools for assessment of response to nitrogen (N) fertilizer and varieties in order to explore potential target zones for improved maize varieties. The CERES-maize model in the Decision Support System for Agrotechnology Transfer version 2.1 was tested using int...

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Main Authors: Jagtap, S.S., Abamu, F.J., Kling, J.G.
Format: Journal Article
Language:Inglés
Published: Elsevier 1999
Subjects:
nitrogen fertilizers
maize
varieties
Online Access:https://hdl.handle.net/10568/98057
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author Jagtap, S.S.
Abamu, F.J.
Kling, J.G.
author_browse Abamu, F.J.
Jagtap, S.S.
Kling, J.G.
author_facet Jagtap, S.S.
Abamu, F.J.
Kling, J.G.
author_sort Jagtap, S.S.
collection Repository of Agricultural Research Outputs (CGSpace)
description Maize simulation models are proposed as tools for assessment of response to nitrogen (N) fertilizer and varieties in order to explore potential target zones for improved maize varieties. The CERES-maize model in the Decision Support System for Agrotechnology Transfer version 2.1 was tested using international testing nurseries at Ibadan, Mokwa, and Kaduna situated, respectively, in the derived savanna, southern guinea savanna, and northern guinea savanna zones in Nigeria during 1992–95. Historical weather data spanning 20 years were used at the target production environments to generate probabilistic estimates of maize yields; nitrogen use efficiency (NUE) associated with fertilizer and variety technologies. Analysis shows with high probability that, under rainfed conditions and N fertilizer input, the 90–110 day varieties (MDV) would yield better than 120–150 day varieties (LDV) at Mokwa and Ibadan, with superior NUE. The risk of crop failure with no N input was, however, substantial. Although response to N varied dramatically from year to year in association with the rainfall, there appears to be no advantage in adjusting N-input strategy for a variety. NUE was predicted to be best at the 60 kg N/ha input strategy, indicating potentials of further yield increase if methods of enhancing NUE at the higher N input levels could be further investigated. The NUE was found to be always lowest at Ibadan, in the derived savanna transition zone where rainfall and cloud cover were higher.
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language Inglés
publishDate 1999
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spelling CGSpace980572024-08-27T10:35:34Z Longterm assessment of nitrogen and variety technologies on attainable maize yields in Nigeria using CERESmaize Jagtap, S.S. Abamu, F.J. Kling, J.G. nitrogen fertilizers maize varieties Maize simulation models are proposed as tools for assessment of response to nitrogen (N) fertilizer and varieties in order to explore potential target zones for improved maize varieties. The CERES-maize model in the Decision Support System for Agrotechnology Transfer version 2.1 was tested using international testing nurseries at Ibadan, Mokwa, and Kaduna situated, respectively, in the derived savanna, southern guinea savanna, and northern guinea savanna zones in Nigeria during 1992–95. Historical weather data spanning 20 years were used at the target production environments to generate probabilistic estimates of maize yields; nitrogen use efficiency (NUE) associated with fertilizer and variety technologies. Analysis shows with high probability that, under rainfed conditions and N fertilizer input, the 90–110 day varieties (MDV) would yield better than 120–150 day varieties (LDV) at Mokwa and Ibadan, with superior NUE. The risk of crop failure with no N input was, however, substantial. Although response to N varied dramatically from year to year in association with the rainfall, there appears to be no advantage in adjusting N-input strategy for a variety. NUE was predicted to be best at the 60 kg N/ha input strategy, indicating potentials of further yield increase if methods of enhancing NUE at the higher N input levels could be further investigated. The NUE was found to be always lowest at Ibadan, in the derived savanna transition zone where rainfall and cloud cover were higher. 1999-05 2018-11-14T06:52:12Z 2018-11-14T06:52:12Z Journal Article https://hdl.handle.net/10568/98057 en Limited Access Elsevier Jagtap, S.S., Abamu, F.J. & Kling, J.G. (1999). Long-term assessment of nitrogen and variety technologies on attainable maize yields in Nigeria using CERES-maize. Agricultural Systems, 60(2), 77-86.
spellingShingle nitrogen fertilizers
maize
varieties
Jagtap, S.S.
Abamu, F.J.
Kling, J.G.
Longterm assessment of nitrogen and variety technologies on attainable maize yields in Nigeria using CERESmaize
title Longterm assessment of nitrogen and variety technologies on attainable maize yields in Nigeria using CERESmaize
title_full Longterm assessment of nitrogen and variety technologies on attainable maize yields in Nigeria using CERESmaize
title_fullStr Longterm assessment of nitrogen and variety technologies on attainable maize yields in Nigeria using CERESmaize
title_full_unstemmed Longterm assessment of nitrogen and variety technologies on attainable maize yields in Nigeria using CERESmaize
title_short Longterm assessment of nitrogen and variety technologies on attainable maize yields in Nigeria using CERESmaize
title_sort longterm assessment of nitrogen and variety technologies on attainable maize yields in nigeria using ceresmaize
topic nitrogen fertilizers
maize
varieties
url https://hdl.handle.net/10568/98057
work_keys_str_mv AT jagtapss longtermassessmentofnitrogenandvarietytechnologiesonattainablemaizeyieldsinnigeriausingceresmaize
AT abamufj longtermassessmentofnitrogenandvarietytechnologiesonattainablemaizeyieldsinnigeriausingceresmaize
AT klingjg longtermassessmentofnitrogenandvarietytechnologiesonattainablemaizeyieldsinnigeriausingceresmaize

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