William Amponsah
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View article: Black soldier fly frass compost improves soil fertility and tomato productivity in Ghana
Black soldier fly frass compost improves soil fertility and tomato productivity in Ghana Open
Organic fertilization using insect-derived compost offers an innovative pathway to sustainable and circular horticulture. This study evaluated the effect of Black Soldier Fly (BSF) frass compost on soil nutrient levels and tomato productiv…
View article: Black soldier fly compost enhances productivity and postharvest quality of tomato in Ghana
Black soldier fly compost enhances productivity and postharvest quality of tomato in Ghana Open
Tomato production in Ghana is constrained by low yields and high postharvest losses. While mineral fertilizers are essential, their use is hindered by rising costs, limited availability, and distribution challenges. This study evaluated Bl…
View article: Heavy Metal Pollution From Illegal Mining <i>‘Galamsey</i> ’ Activities on the Viability of <i>Clarias gariepinus</i> in the Oda River, Ghana
Heavy Metal Pollution From Illegal Mining <i>‘Galamsey</i> ’ Activities on the Viability of <i>Clarias gariepinus</i> in the Oda River, Ghana Open
Activities associated with illegal mining, ‘galamsey’, often result in significant environmental degradation, particularly to water bodies. In the case of River Oda, like all other affected areas in Ghana, galamsey operations contribute to…
View article: Climate Services for Risk Reduction in Africa (CS4RRA): a multilateral initiative between Europe and Africa
Climate Services for Risk Reduction in Africa (CS4RRA): a multilateral initiative between Europe and Africa Open
The West African countries share a myriad of challenges, including environmental degradation, desertification, enhanced rainfall variability, unprecedented heat waves, floodings and declining agricultural productivity. The accelerated clim…
View article: Design, Simulation, and Economic Analysis of a Solar Photovoltaic‐Powered Pumping System for Drip Irrigation of a 1‐ha Bean Farm in a Tropical Climate
Design, Simulation, and Economic Analysis of a Solar Photovoltaic‐Powered Pumping System for Drip Irrigation of a 1‐ha Bean Farm in a Tropical Climate Open
A successful agricultural system, be it large‐scale or small‐scale, requires adequate irrigation of plants, regardless of seasonal changes in rainfall. Unreliable electricity supply in tropical regions has necessitated the use of alternate…
View article: Heavy Metal Pollution from Illegal Mining ‘Galamsey’ Activities on the Viability of Clarias Gariepinus in the Oda River, Ghana
Heavy Metal Pollution from Illegal Mining ‘Galamsey’ Activities on the Viability of Clarias Gariepinus in the Oda River, Ghana Open
Activities associated with illegal mining “galamsey’’ often result in significant environmental degradation, particularly to water bodies. In the case of River Oda, like all other affected areas in Ghana, galamsey operations contribute to …
View article: Evaluation of the Efficiency of Disc Filters used by Peri-Urban Farmers in Removing Impurities from Wastewater at Zagyuri Irrigation System in Sagnerigu Municipal of Northern Region of Ghana
Evaluation of the Efficiency of Disc Filters used by Peri-Urban Farmers in Removing Impurities from Wastewater at Zagyuri Irrigation System in Sagnerigu Municipal of Northern Region of Ghana Open
The results indicated that the study water was polluted and could only be suitable for drip and sprinkler irrigation if filtered at two levels: before and after storage to avoid blockage of emitters, since the water was highly turbid with …
View article: Combining deficit irrigation and nutrient amendment enhances the water productivity of tomato (Solanum lycopersicum L.) in the tropics
Combining deficit irrigation and nutrient amendment enhances the water productivity of tomato (Solanum lycopersicum L.) in the tropics Open
Water availability for irrigation farming is one of the greatest challenges associated with the increasing spatio-temporal effects of climate change and variability on tomato production, especially in tropical regions. This study was condu…
View article: Non-asymptotic Weibull tails explain the statistics of extreme daily precipitation
Non-asymptotic Weibull tails explain the statistics of extreme daily precipitation Open
The exceedance probability of extreme daily precipitation is usually quantified assuming asymptotic behaviours. Non-asymptotic statistics, however, would allow us to describe extremes with reduced uncertainty and to establish relations bet…
View article: Assessment of soil fertility status in cotton-based cropping systems in Cote d’Ivoire
Assessment of soil fertility status in cotton-based cropping systems in Cote d’Ivoire Open
Cotton is the main cash crop in northern Côte d’Ivoire, where intensive cultivation along with low external inputs has led to a decline in crop yields due to soil degradation. The present study aims to assess the evolution of soil fertilit…
View article: Local Cotton Farmers’ Perceptions of Climate Change Events and Adaptations Strategies in Cotton Basin of Cote d&#39;Ivoire
Local Cotton Farmers’ Perceptions of Climate Change Events and Adaptations Strategies in Cotton Basin of Cote d'Ivoire Open
Climate change represents a major potential threat to the viability of rural households’ livelihoods in sub-Saharan Africa. This study focused on the perceptions of climate change and adaptation strategies of local cotton farmers in …
View article: Climatic zoning of Ghana using selected meteorological variables for the period 1976–2018
Climatic zoning of Ghana using selected meteorological variables for the period 1976–2018 Open
Periodic climate zoning is an essential classification of land cover to account for anthropogenic activities resulting from population increase and urbanization that affect key climate response parameters. Rainfall, relative humidity (RH),…
View article: Integrated high-resolution dataset of high-intensity European and Mediterranean flash floods
Integrated high-resolution dataset of high-intensity European and Mediterranean flash floods Open
This paper describes an integrated, high-resolution dataset of hydro-meteorological variables (rainfall and discharge) concerning a number of high-intensity flash floods that occurred in Europe and in the Mediterranean region from 1991 to …
View article: Integrated high-resolution dataset of high intensity Euro-Mediterranean flash floods
Integrated high-resolution dataset of high intensity Euro-Mediterranean flash floods Open
This paper describes an integrated, high-resolution dataset of hydro-meteorological variables (rainfall and discharge) concerning a number of high-intensity flash floods that occurred in Europe and in the Mediterranean region from 1991 to …
View article: Hydrometeorological Characterization of a Flash Flood Associated with Major Geomorphic Effects: Assessment of Peak Discharge Uncertainties and Analysis of the Runoff Response
Hydrometeorological Characterization of a Flash Flood Associated with Major Geomorphic Effects: Assessment of Peak Discharge Uncertainties and Analysis of the Runoff Response Open
Postflood indirect peak flow estimates provide key information to advance understanding of flash flood hydrometeorological processes, particularly when peak observations are combined with flood simulations from a hydrological model. Howeve…
View article: An integrated approach for investigating geomorphic response to extreme events: methodological framework and application to the <scp>October</scp> 2011 flood in the Magra River catchment, <scp>Italy</scp>
An integrated approach for investigating geomorphic response to extreme events: methodological framework and application to the <span>October</span> 2011 flood in the Magra River catchment, <span>Italy</span> Open
A high‐magnitude flash flood, which took place on 25 October 2011 in the Magra River catchment (1717 km 2 ), central‐northern Italy , is used to illustrate some aspects of the geomorphic response to the flood. An overall methodological fra…
View article: Health Disparities in Cardiovascular Disease and High Blood Pressure Among Adults in Rural Underserved Communities
Health Disparities in Cardiovascular Disease and High Blood Pressure Among Adults in Rural Underserved Communities Open
Purpose: This study examined the factors contributing to health disparities in cardiovascular disease (CVD) and high blood pressure (HBP) among adults in three rural underserved communities in southeast Georgia. Socioeconomic status as wel…
View article: Ghana: A Case Study in Macroeconomic Adjustment
Ghana: A Case Study in Macroeconomic Adjustment Open
Ghana's macroeconomic misalignment in the 19708 and 1980s necessitated structural adjustment. Using a mulit-sectoral partial equilibrium model, we identify price incentives in the major export sectors, real exchange rate realignment, incre…