| 000 | 02459nab a22003737a 4500 | ||
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| 999 |
_c59388 _d59380 |
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| 001 | 59388 | ||
| 003 | MX-TxCIM | ||
| 005 | 20211006085145.0 | ||
| 008 | 180404s2017 uk |||p| p||| 00| 0 eng d | ||
| 024 | 8 | _ahttps://doi.org/10.1080/02571862.2017.1354407 | |
| 040 | _aMX-TxCIM | ||
| 041 | _aeng | ||
| 100 | 1 |
_96844 _aMacCarthy, D. S. |
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| 245 | 1 | _aEvaluating maize yield variability and gaps in two agroecologies in northern Ghana using a crop simulation model | |
| 260 |
_aUnited Kingdom : _bTaylor and Francis, _c2017. |
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| 500 | _aPeer review | ||
| 500 | _aOpen Access | ||
| 500 | _aSome authors of this article are affiliated to IITA. | ||
| 520 | _aThe yield gap and variability in maize under smallholder systems in two agroecologies in northern Ghana were evaluated using a decision support system for agrotechnology transfer (DSSAT). The model was used to assess (1) the potential yield of maize (YPOT), (2) water-limited exploitable maize yield (YWEX), (3) nitrogen-limited yield (YNI), (4) farmer practice maize yield (YCFP) and (5) proposed enhanced nutrient use yield (enhanced farmer practice; YEFP). Effect of supplementary irrigation was also assessed on YCFP and YEFP conditions. Yield gaps were determined as the difference between YPOT and YCFP or YEFP on the one hand, and between YWEX and YCFP or YEFP on the other hand. The yield gap based on potential yield ranged from 59% to 75% under CFP and narrowed to between 29% and 59% under EFP. With water-limited exploitable yields, the yield gap ranged from 53% to 65% under CFP, reducing to between 22% and 42% under EFP. The use of supplementary irrigation further reduced the yield gap. Improved fertiliser use and supplementary irrigation have the potential to increase yield and hence reduce the yield gap if effective policies and institutional structures are in place to provide farmers with credit facilities and farm inputs. | ||
| 526 | _aMCRP | ||
| 546 | _aText in English | ||
| 650 | 7 |
_aMaize _gAGROVOC _2 _91173 |
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| 650 | 7 |
_aCropping systems _gAGROVOC _2 _91068 |
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| 650 | 7 |
_91313 _aYields |
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| 651 | 0 |
_94493 _aGhana |
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| 700 | 1 |
_96846 _aAdiku, S. G. K. |
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| 700 | 1 |
_96847 _aFreduah, B. S. |
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| 700 | 1 |
_96761 _aKamara, A. Y. |
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| 700 | 1 |
_96849 _aNarh, S. |
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| 700 | 1 |
_96850 _aAbdulai, A. L. |
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| 773 | 0 |
_gv. 35, no. 2, p. 137-147 _tSouth African Journal of Plant and Soil _x2167-034X |
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| 856 | 4 | _uhttps://doi.org/10.1080/02571862.2017.1354407 | |
| 942 |
_2ddc _cJA |
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