Henry Evonameh Igbadun

• B.Eng (Agric), M.Sc (Soil and Water Conservation Engineering), PhD (Agric. Eng)
• Professor (Full) at Ahmadu Bello University

Sustainable intensification (SI) is a system of production that increases output without causing significant environmental damage. It focusses on enhancing agricultural land production while managing its environmental impact. Evaluation frameworks have evolved to include non-environmental aspects, such as social concerns, economics, and the human c...

Mixed farming systems are a sustainable closed-loop model for crop–livestock systems, focusing on structure, practices, logic, social, cultural, economic, climatic, and institutional capital interactions. However, literature on crop–livestock–soil–water interactions is scarce, with few separating crop and livestock water productivity in mixed syste...

Growth-stage-based deficit irrigation effects on the yield and water productivity of tomato

Improving water productivity (WP) through deficit irrigation is a major goal for sustainable agriculture under water scarcity conditions as observed in the semi-arid parts of Nigeria. The yield and crop water use responses of drip-irrigated tomato to deficit irrigation in Kaduna, Nigeria was evaluated during the dry seasons of 2017-2019. The treatm...

This study interrogates the state of social-ecological landscapes (SEL) in West Africa, focusing on two case studies: the Mankran SEL in Ghana (case study 1) and the Doma–Rutu SEL in Nigeria (case study 2). Using a mix of methods, the assessment was framed by the Drivers Pressure State Impact Response (DPSIR) model tailored for SEL evaluation (DPSI...

This study evaluates the Land Use and Land Cover (LULC) dynamics and water quality in the Mankran landscape in Ghana (case study-1) and the Doma-Rutu landscape in Nigeria (case study-2) using the Drivers Pressure State Impact Response (DPSIR) for social ecological landscape (SEL) assessment framework (DPSIR-SEL). In the Mankran landscape, between 2...

This study evaluates the Land Use and Land Cover (LULC) dynamics and water quality in the Mankran landscape in Ghana (case study-1) and the Doma-Rutu landscape in Nigeria (case study-2) using the Drivers Pressure State Impact Response (DPSIR) for social ecological landscape (SEL) assessment framework (DPSIR-SEL). In the Mankran landscape, between 2...

Compared to gravity flow systems, pressurized drip irrigation provides more efficient control of the amount of water applied, better irrigation uniformity, and a higher initial capital and operation costs. Hence, an economic analysis is required to determine its profitability over a projected time period. Field experiments were conducted in Afaka (...

Effects of operating pressure on the emission characteristics of inline-type drip irrigation emitter

Emission characteristics of a drip irrigation system are key to its appropriate design for precise and uniform water application. The emission uniformity (EU) and the coefficient of variation of emitter flow (CVq) of a pressure compensating inline type of emitter were evaluated in the field under operating pressures (OPs) of 100 to 310 kPa, being t...

Malaria has been among the dangerous diseases not only in Nigeria but Africa as whole. Artemisia crop has an artemisinin, which is a strong anti- malaria drug. However, despite its importance in curing this disease, it is only produced under rain-fed but hardly produced under irrigation in Nigeria. The experiment consisted of three levels of irriga...

Improving water productivity through deficit irrigation has become a major goal for sustainable agriculture amidst global decline in water availability. The study evaluated the yield, crop water use and water productivities of field-grown drip-irrigated tomato in response to regulated deficit irrigation, and subsequent simulation under different de...

Le programme TAAT «Technologies for African Agricultural Transformation» (en français Technologies pour la Transformation de l’Agriculture en Afrique) la toute dernière initiative de la Banque Africaine de Développement (BAD), est un effort audacieux pour pallier plusieurs de ces contraintes de production liées au déploiement et à la propagation de...

The objective of this study was to predict the probabilities of occurrences of long dry spells and their lengths during the planting period in rainfed farming season for future planning in Gusau and its environs North-Western Nigeria. Markov chain and probability distribution models were used to help predict in advance the longtime dry spells occur...

This research presents the findings of the effects of deficit irrigation on yield and water productivity of tomato (Solanum lycopersicon) in Fadama plain of Bunga in Bauchi State, Nigeria. The field experiment was conducted during the 2016/2017 dry season farming. Eighteen treatment combinations which comprised of two tomato varieties (Roma VF and...

This report presents a study of yield and seasonal water use of two (2) varieties of cowpea (SAMPEA 7 and 9) under deficit irrigation and mulch cover in Samaru, Northern Nigeria. A field experiment was conducted at the Samaru irrigation field of IAR in 2010/2011 irrigation seasons using surface irrigation method. The experiments consisted of twelve...

This study was conducted to evaluate egg production curves of Shikabrown parents, using mathematical models. A total of 200 birds: 100 from each of the two strains of Shikabrown® parents (sire and dam) lines at the Breeding Unit of Poultry Research Programme, National Animal Production Research Institute (NAPRI) were used for the study. The birds w...

This report presents a study of crop water requirement and crop coefficient (Kc) for Tomato crop cultivated under irrigation in Pampaida Millennium Village Cluster, Ikara Local Government Area of Kaduna State, Nigeria, during the 2009/2010 dry season. A total of 7 tomato farmers were selected out of 45 farmers for the assessment exercise. Water app...

This study was conducted in Pampaida Millennium Village (PMV), Ikara Local Government Area of Kaduna State, Nigeria; during the 2009/2010 dry season to assess Tomato farmer’s irrigation water management practice using furrow irrigation. A total of 7 tomato farmers were selected out of 45 farmers for the assessment exercise. Soil moisture content wa...

Integrated solutions to make optimum use of water and water management cannot be over emphasized as this management minimizes damage to life and property and to maximize efficient beneficial use. Agriculture has been facing threat due to insufficient rainfall most especially in arid and semi-arid region of the world due to climate change which make...

Thisworkdeterminedtheeffectsofdeficitirrigationandmulchingpracticesoncropcoefficient(Kc)oftomatointheKanoRiverIrrigationProject(KRIP)Kadawa,Kano,Nigeria.Experimentscomprisedoffourlevelsofwaterapplicationdepths(40,60,80,and100%ofweeklyreferenceevapotranspiration)andfourlevelsofmulching(No-Mulch(NM),Rice-Straw-Mulch(RSM),Wood-Shaving-Mulch(WSM)and Wh...

This work determined the effects of deficit irrigation and mulching practices on crop coefficient (Kc) of tomato in the Kano River Irrigation Project (KRIP) Kadawa, Kano, Nigeria. Experiments comprised of four levels of water application depths (40, 60, 80, and 100% of weekly reference evapotranspiration) and four levels of mulching (No-Mulch (NM),...

This paper reports the fabrication and calibration of sharp crested weirs for flow measurement in furrows. This was done through an experiment on some constructed hydraulic weir models attached to furrows supplied with water through the weirs. The project seeks to determine the coefficient of discharge of the hydraulic weir models and prove the pow...

The calibration of an analogue conductive soil moisture meter was carried out on two soils (Afaka sandy loam, SL and Samaru clay loam, CL) of the Northern Guinea Savanna ecological zone of Nigeria in the 2017-2018 irrigation seasons. The calibration was carried out within 0 to 60 cm soil profile depth to determine the volumetric moisture contents c...

Series of experiments were conducted to assess the response of agro physiological characters of three lettuce (Lactuca sativa L.) cultivars under different irrigation water application depths and mulch in a semi-arid ecology of Northern Nigeria. The experiments were conducted during three seasons of irrigation seasons at Kadawa Irrigation Research...

The performance of Autoregressive Moving Average and Multiple Linear Regression Models in predicting minimum and maximum temperatures of Ogun State is herein reported. Maximum and Minimum temperatures data covering a period of 29 years (1982-2009) obtained from the Nigerian Meteorological Agency (NiMet), Abeokuta office, Nigeria, were used for the...

In the past, outcome of any water management strategy could only be known after field experiment, in recent times, means of evaluating the implications of irrigation schedules without field experiment is fast gaining grounds with the use of models. This research work present a scenarios studies for different developed irrigation scheduling options...

Farmers in the northern Guinea Savannah ecological zone of Nigeria have been experiencing declining crop yield due to erratic water supply. In recent times, research on better water management and interaction between effects of climate, soil and field management on crop production is fast gaining grounds with the use of models. Models can be used t...

Amidst positive effects of irrigation, there are some negative effects which potentially appear in irrigation areas. The most important are water erosion on sloping fields; caused by depreciating irrigation structures, resulting in siltation of water canals, growth of weeds, debris and other materials that has capacity to inhibit flow of water. Thi...

Assessment of soil erosion and sediment yield in furrow irrigation is limited in Samaru-Zaria. Data was collected in 2009 and 2010 and was used to develop a dimensionless model for predicting furrow irrigation-induced erosion (FIIE) using the dimensional analyses approach considering stream size, furrow length, furrow width, soil infiltration rate,...

Furrow irrigation proceeds under several soil-water-furrow hydraulics interaction dynamics. The soil erosion consequences from such interactions in furrow irrigation in Samaru had remained uncertain. A furrow irrigation-induced erosion (FIIE) model was used to simulate the potential severity of soil erosion in irrigated furrows due to interactive e...

Maize (Zea mays.L) farmers in the traditional irrigation schemes in middle Mkoji sub-catchment, Tanzania observes three irrigation scheduling practices. This paper presents a simulation study of the impacts of these scheduling practices on yield and soil water balance of the maize crop. The three scheduling practices include irrigating at 5 days an...

In this study, a simulation model known as Irrigation Scheduling Impact Assessment Model (ISIAMOD) was used to simulate leaf area index, cumulative biomass production, final biomass yield at harvest, and grain yield of a maize crop as affected by deficit irrigation scheduling practice. The simulated outputs were compared graphically and statistical...

This report presents a study of crop coefficient (Kc) and yield response factors (Ky) for onion crop cultivated under deficit irrigation and different mulch covers in Samaru, Northern Nigeria. The field experiments were conducted at the irrigation fields of the Institute for Agricultural Research (IAR) irrigation field in 2008/2009 and 2009/2010 ir...

This paper presents a process-based simulation known as Irrigation Scheduling Impact Assessment MODel (ISIAMOD). It was developed to simulate crop growth & yield, soil water balance and water management response indices to define the impact of irrigation scheduling decisions. ISIAMOD was calibrated and validated using data from field experiments on...

This paper reports the use of weighing-type mini-lysimeters to estimate the crop water use of rain-fed maize and groundnut. The mini-lysimeters were assembled using readily available materials which include plastic containers as the lysimeter tank and vehicular tubes filled with water connected to a manometer glass tubes for the weighing system. Th...

The ability of the Soil Water Characteribtics-Hydraulic Calculator (SWC-HPC) model in predicting soi-water agricultural fields in Zaria, Nigeria, was tested and rep< >rted in this study. The goal was to establish the predictability and reliability of the nodel, and hence, its use in determining water characteristics of soils in the stud/ area. Fort...

This paper presents the findings of the effect of some selected deficit irrigation scheduling practices on irrigated maize crop in a sub-catchment in south western part of Tanzania. Field experiments, in which maize (TMV1-ST) variety was planted under total irrigation, were conducted during the dry seasons of 2004 and 2005. Surface irrigation metho...

Four infiltration models were investigated for their capacity to describe water infiltration into hydromorphic (gleysol) soil. The Models were Kostiakov\'s (1932), Philip\'s (1957) Kostiakov- Lewis\'(1982) and Modified Kostiakov (1978). Field measurement of infiltration was made using double ring infiltrometers on an hydromorphic soil of the flood...

This paper presents the performance evaluation of four selected crop water production functions (CWPF). The general objective of the study was to test the capability and suitability of the models in predicting grain yield of a maize crop for a study area giving the models’ input parameters. The four functions evaluated were Jensen [Jensen, M.E., 19...

Abstract This paper presents simulated crop yield and soil water balance responses of irrigated maize to the existing irrigation scheduling practice in Mkoji sub-catchment of the Great Ruaha River in Tanzania. Farmers in the study area are constrained to a fixed frequency irrigation schedule due to the practice of rotational water delivery method i...

Crop water productivity (CWP) is a quantitative term used to define the relationship between crop produced and the amount of water involved in crop production. It is a useful indicator for quantifying the impact of irrigation scheduling decisions with regard to water management. This paper presents CWP quantified from field experimental data. Three...

The performance of two temperature-based empirical models for computing reference evapotranspiration (ETo): the Hargreaves (HG) and the Jensen-Haise (J-H) models, were evaluated for the three: Upper, Middle, and Lower zones of the Mkoji sub-catchment of the Great Ruaha River Basin in Tanzania. Climatic data from the Mbeya, Igurusi, and Kapunga weat...

"In Sub-Sahara Africa, rain-fed agriculture is the dominant source of food production. It is likely going to remain so for the next foreseeable future. However, yields from rain-fed agriculture are often very low. But there is an enormous opportunity to raise crop yield of rain-fed agriculture especially by focusing on the aspect of increasing prod...

"Deficit irrigation scheduling is one way in which farmers practicing irrigation farming can cope with the pressure that has been put on them to reduce water used for crop production in order to release water for other sectors. A field experiment was carried out at the Igurusi ya Zamani indigenous irrigation scheme in Mkoji Sub-catchment of the Gre...

An understanding of moisture dynamics of the soil profile of a crop under different water regimes is important in determining the optimum deficit irrigation scheduling practice for the crop in an area. Such understanding is necessary in order to know when to irrigate, what extent of deficit should be allowed, and at what growth stage of the crop sh...

Irrigation scheduling is viable practice that can enhance crop production and greater profit for farmers. It can lead to significant water saving, reduced environmental impact of irrigation and improved sustainability of irrigated agriculture. In order to define appropriate irrigation scheduling protocols for optimal water management and crop respo...

"Stakeholders in agriculture and water related issues have different perceptions about the productivity of water. This is evident by the different definitions of productivity of water, though most of the definitions hinge around the benefits accrued from water use. The viewpoint of smallholder farmers’ regarding the productivity of water is importa...