fd1320ff-cc6c-460d-bbea-a1d7222c9356 Amit Kumar Srivastava Institute of Crop Science and Resource Conservation (INRES), University of Bonn +49228732876 +49228732870 Katzenburgweg 5 Bonn NRW 53115 Germany amit[at]uni-bonn.de 2023-07-29T08:39:00 ISO 19115:2003/19139 1.0 EPSG:4326 Maize Yield Gap in Ghana (Map), 1992-2010 2010-11-16T13:45:00 2018-04-16 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. 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. Amit Kumar Srivastava Institute of Crop Science and Resource Conservation (INRES), University of Bonn +49228732876 +49228732870 Katzenburgweg 5 Bonn NRW 53115 Germany amit[at]uni-bonn.de https://daten.zef.de:/geonetwork/srv/api/records/fd1320ff-cc6c-460d-bbea-a1d7222c9356/attachments/BIOW_agr_maize_yield_gap_ghana_1992-2010.png https://daten.zef.de:/geonetwork/srv/api/records/fd1320ff-cc6c-460d-bbea-a1d7222c9356/attachments/proj_BiomassWEB.png BiomassWeb Research Project 2021-06-04 geonetwork.thesaurus.local.discipline.RP-KW biomass planting irrigation yield (agricultural) GEMET - Concepts, version 2.4 2010-01-13 geonetwork.thesaurus.external.theme.gemet maize yield gap Ghana Continents, countries, sea regions of the world. 2015-07-17 geonetwork.thesaurus.external.place.regions Data available under the license Creative Commons Attribution-ShareAlike 4.0 International License. http://creativecommons.org/licenses/by-sa/4.0/ Citation: Srivastava, A. K. (2018): Maize Yield Gap in Ghana (Map), 1992-2010 https://daten.zef.de/#/metadata/fd1320ff-cc6c-460d-bbea-a1d7222c9356 farming -3.142607959484832 0.2851264150380293 5.09366010245771 11.439627749768874 1992-01-01 2010-12-31 The yield gaps plotted in the map were calculated as the average values of 19 years (the year 1992 -2010). The unit is Megagram per hectare (Mg ha-1) which is equivalent to tons ha-1. The climate data at the national scale was made available from the Terrestrial Hydrology Research Group, Princeton University (http://hydrology.princeton.edu/data.php) at a resolution of 10 km x 10 km. The dataset was constructed by combining a suite of global observation-based datasets with the NCEP/NCAR reanalysis. Soil parameter values were extracted from the soil property maps of Africa at 1 km x 1 km resolution (http://www.isric.org/data/soil-property-maps-africa-1-km). Maize yields (Mg ha-1) over 19 years(1992 - 2010) at the district level have been collected from the PPMED (Agric. Statistics & Census Div.) Min. of Agric., Ghana. ESRI Shapefile 1.0 Center for Development Research, University of Bonn https://daten.zef.de:/geonetwork/srv/api/records/fd1320ff-cc6c-460d-bbea-a1d7222c9356/attachments/BIOW_agr_maize_yield_gap_ghana_1992-2010_300dpi.zip WWW:DOWNLOAD-1.0-http--download BIOW_agr_maize_yield_gap_ghana_1992-2010_300dpi.zip Maize yield gap in Ghana (Map in PNG-Format, 300 dpi) https://biomassweb.org/ WWW:LINK-1.0-http--link BiomassWeb Project website https://daten.zef.de:/geonetwork/srv/api/records/fd1320ff-cc6c-460d-bbea-a1d7222c9356/attachments/Ghana_Maize_Resource_Use_Efficiencies_1992-2010.zip WWW:DOWNLOAD-1.0-http--download Ghana_Maize_Resource_Use_Efficiencies_1992-2010.zip Ghana_Maize_Resource_Use_Efficiencies_1992-2010