Registration of ‘ICSV 111’ Sorghum Cultivar

Murty, D. S.; Nwasike, C. C.; Atokple, I. D. K.

doi:10.2135/cropsci1998.0011183x003800060059x

Cited by 3 publications

(2 citation statements)

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“…The extent to which phasic development leading to panicle initiation is delayed for each hour increase in photoperiod above the critical threshold was set at 0.01 degree days (MacCarthy et al, 2009). This was done to eliminate the influence of photoperiod on plant growth and development as the cultivar used was insensitive to photoperiod (Murty et al, 1998). Based on the phenological data collected, thermal degree times (P1, P5 and PHINT) were calculated from daily temperature data collected for the study area as mentioned earlier above.…”

Section: Model Calibration and Evaluationmentioning

confidence: 99%

Modeling nutrient and water productivity of sorghum in smallholder farming systems in a semi-arid region of Ghana

MacCarthy

Vlek

Bationo

et al. 2010

Field Crops Research

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The CERES-sorghum module of the Decision Support System for Agro-Technological Transfer (DSSAT) model was calibrated for sorghum (Sorghum bicolor (L.) Moench) using data from sorghum grown with adequate water and nitrogen and evaluated with data from several N rates trials in Navrongo, Ghana with an overall modified internal efficiency of 0.63. The use of mineral N fertilizer was found to be profitable with economically optimal rates of 40 and 80 kg N ha −1 for more intensively managed homestead fields and less intensively managed bush fields respectively. Agronomic N use efficiency varied from 21 to 37 kg grain kg −1 N for the homestead fields and from 15 to 49 kg grain kg −1 N in the bush fields. Simulated grain yield for homestead fields at 40 kg N ha −1 application was equal to yield for bush fields at 80 kg N ha −1. Water use efficiency generally increased with increased mineral N rate and was greater for the homestead fields compared with the bush fields. Grain yield per unit of cumulative evapo-transpiration (simulated) was consistently higher compared with yield per unit of cumulative precipitation for the season, probably because of runoff and deep percolation. In the simulation experiment, grain yield variability was less with mineral N application and under higher soil fertility (organic matter) condition. Application of mineral N reduced variability in yield from a CV of 37 to 11% in the bush farm and from 17 to 7% in the homestead fields. The use of mineral fertilizer and encouraging practices that retain organic matter to the soil provide a more sustainable system for ensuring crop production and hence food security.

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Section: Model Calibration and Evaluationmentioning

confidence: 99%

Modeling nutrient and water productivity of sorghum in smallholder farming systems in a semi-arid region of Ghana

MacCarthy

Vlek

Bationo

et al. 2010

Field Crops Research

View full text Add to dashboard Cite

show abstract

“…The CERES maize model was earlier recalibrated and evaluated for these varieties [14]. The sorghum variety ICSV III was registered for use in Ghana in 1998, based on research by the CGIAR Centres and the national research systems [23]. The pearl millet variety used is the CIVT, which is an improved variety developed by ICRISAT together with the national systems in the semi-arid regions of West Africa [24].…”

Section: Model Descriptionmentioning

confidence: 99%

Climate Change Impact and Variability on Cereal Productivity among Smallholder Farmers under Future Production Systems in West Africa

et al. 2021

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Agriculture in West Africa is constrained by several yield-limiting factors, such as poor soil fertility, erratic rainfall distributions and low input systems. Projected changes in climate, thus, pose a threat since crop production is mainly rain-fed. The impact of climate change and its variation on the productivity of cereals in smallholder settings under future production systems in Navrongo, Ghana and Nioro du Rip, Senegal was assessed in this study. Data on management practices obtained from household surveys and projected agricultural development pathways (through stakeholder engagements), soil data, weather data (historical: 1980–2009 and five General Circulation Models; mid-century time slice 2040–2069 for two Representative Concentration Pathways; 4.5 and 8.5) were used for the impact assessment, employing a crop simulation model. Ensemble maize yield changes under the sustainable agricultural development pathway (SDP) were −13 and −16%, while under the unsustainable development pathway (USDP), yield changes were −19 and −20% in Navrongo and Nioro du Rip, respectively. The impact on sorghum and millet were lower than that on maize. Variations in climate change impact among smallholders were high with relative standard deviations (RSD) of between 14% and 60% across the cereals with variability being higher under the USDP, except for millet. Agricultural production systems with higher intensification but with less emphasis on soil conservation (USDP) will be more negatively impacted by climate change compared to relatively sustainable ones (SDP).

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Modeling the impacts of contrasting nutrient and residue management practices on grain yield of sorghum (Sorghum bicolor (L.) Moench) in a semi-arid region of Ghana using APSIM

MacCarthy

Sommer

Vlek

2009

Field Crops Research

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Registration of ‘ICSV 111’ Sorghum Cultivar

Cited by 3 publications

References 0 publications

Modeling nutrient and water productivity of sorghum in smallholder farming systems in a semi-arid region of Ghana

Modeling nutrient and water productivity of sorghum in smallholder farming systems in a semi-arid region of Ghana

Climate Change Impact and Variability on Cereal Productivity among Smallholder Farmers under Future Production Systems in West Africa

Modeling the impacts of contrasting nutrient and residue management practices on grain yield of sorghum (Sorghum bicolor (L.) Moench) in a semi-arid region of Ghana using APSIM

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