Maize Yield Gap in Ghana (Map), 1992-2010
type: Dataset
creator: Amit Kumar Srivastava
  type: Person
  given name: Amit Kumar
  family name: Srivastava
  affiliation: Institute of Crop Science and Resource Conservation (INRES), University of Bonn
author: Amit Kumar Srivastava
  type: Person
  given name: Amit Kumar
  family name: Srivastava
  affiliation: Institute of Crop Science and Resource Conservation (INRES), University of Bonn
date published: 2023-09-18
date modified: 2023-09-18
version: 1
description: The yield gap for maize in two regions (Ashanti Region and Brong-Ahafo region) in Ghana has been estimated using crop model LINTUL5 embedded into the modeling framework SIMPLACE (Scientific Impact Assessment and Modelling Platform for Advanced Crop and Ecosystem Management. The yield gap of a crop grown in a certain location and cropping system is defined as the difference between the yield and biomass under optimum management and the average yield achieved by farmers. Yield under optimum management is labeled as potential yield (Yp) under irrigated conditions or water-limited potential yield (Yw) under rain-fed conditions.Yp is location specific because of the climate, and not dependent on soil properties assuming that the required water and nutrients are non-limiting and can be added through management. Thus, in areas without major soil constraints, Yp is the most relevant benchmark for irrigated systems. Whereas, for rain-fed crops, Yw, equivalent to water-limited potential yield, is the most relevant benchmark. Both Yp and Yw are calculated for optimum planting dates, planting density and region-specific crop variety which is critical in determining the feasible growth duration, particularly in tropical climatic conditions where two or even three crops are produced each year on the same field. Purpose: To increase food production, identifying the regions with untapped production capacity is of prime importance and can be achieved by quantitative and spatially explicit estimates of Yield gaps, thus considering the spatial variation in environment and the production system.
keywords: Other
keywords: BiomassWeb
keywords: biomass
keywords: planting
keywords: irrigation
keywords: yield (agricultural)
temporal coverage: 1992-01-01/2010-12-31
license: http://creativecommons.org/licenses/by-sa/4.0
included in data catalog: bonndata
publisher: bonndata
provider: bonndata
spatial coverage: Ghana
distribution: BIOW_agr_maize_yield_gap_ghana_1992-2010.png
distribution: BIOW_agr_maize_yield_gap_ghana_1992-2010_300dpi.png
distribution: Ghana_Maize_Resource_Use_Efficiencies.zip
distribution: metadata.xml
distribution: proj_BiomassWEB.png

BIOW_agr_maize_yield_gap_ghana_1992-2010.png
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encoding format: image/png
content size: 881384

BIOW_agr_maize_yield_gap_ghana_1992-2010_300dpi.png
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content size: 5053905

Ghana_Maize_Resource_Use_Efficiencies.zip
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content size: 43319

metadata.xml
type: DataDownload
encoding format: text/xml
content size: 29308

proj_BiomassWEB.png
type: DataDownload
encoding format: image/png
content size: 8538