Oluwaseun Elijah Onofua

Ladoke Akintola University of Technology · Department of Agricultural Engineering

The demand for tomato (Lycopersicon esculentum) as a vegetable and as an industrial raw material is increasing globally. To maximize tomato production and quality, there is need for good water management. This research studied the effect of three irrigation frequencies (F1=7 days; F2= 5 days; and F3= 3 days) and three depths of water applications (...

Pollution from wastewater generated through irrigation has been a major challenge to environmental engineers (especially agricultural engineers) today, as a result of the contaminants and pollutants discharged due to the chemicals from the fertilizers used on crops and the discharge of sediments to surface water or groundwater. An approach to treat...

Nutrients and organic pollutants draining from agricultural fields are the leading sources of surface water quality impairment. Activated carbon (AC) produced from agricultural crop residues has great success in the sequestration of hazardous substances from wastewaters. This study evaluates the potential of coconut shell activated carbon for agric...

The importance of irrigation practice in food production cannot be over-emphasised, however irrigation practices impact soils and other environmental parameters negatively. This necessitates the need for continuous monitoring of the impacts of irrigation on soils and the general environment. A study was carried out on the Josepdam Irrigation Scheme...

Soil supplies most of the mineral nutrients for plant growth through the plant's root system. The need to determine the soil nutrient supplying capacity of the soil at Idi-Apa, Oke-Oyi area of Kwara State, Nigeria for groundnut cultivation is of major concern before embarking on large-scale cultivation of groundnut to avoid great loss. The project...

Irrigation is the artificial application of water to crops to supply moisture. With rising drought indices and rapid population expansion, the need for irrigation water for food production is growing. Nonetheless, irrigated agriculture is battling several issues that have resulted in poor performance, inefficient water usage, and low crop water pro...

Compaction is one of the major threats to soil sustainability as it can have negative effects on soil physical properties. Therefore, field experiments were conducted at Ladoke Akintola University of Technology Teaching and Research Farm, Ogbomoso, Southwestern Nigeria, in 2015 and 2016 to evaluate the influence of soil compaction on selected soil...

Eutrophication, salinization, hypoxia, and toxic algae, among other environmental damages are costly consequences of agricultural drainage water (ADW), and therefore poses a threat to ecological biodiversity, food security and agriculture sustainability. This work aimed to assess the adsorption efficiency of rice husk (RH) modified by chemical and...

This research was conducted to analyze the soil physico-chemical properties of Shonga Irrigation Scheme to ascertain its suitability for rice production. The study was carried out in the dry season of 2019. Disturbed soil samples were collected from the 0–15 and 15–30 cm soil layers in five identified areas in the irrigation scheme. The samples wer...

Soil physical properties and crop yield may vary in their responses to different mulching materials. Therefore, field studies were conducted during 2018 and 2019 cropping seasons to evaluate the effect of different mulch types on selected soil physical properties, growth and yield of okra (Abelmoschus esculentus (L.) Moench). The experiment consist...

Application of groundwater for domestic and agricultural uses has increased in sub-Sahara Africa. However, geology and anthropogenic activities can impact groundwater quality. But information on quality evaluation and suitability classification of groundwater based on water quality index (WQI) is limited. Thus, this study evaluated the spatial vari...

Irrigation and mulching are important soil management practices for sustainable food productions. Different irrigation and mulching treatments could however affect soil hydrothermal properties and hence the soil productivity. This study evaluated the effect of drip irrigation interval and mulching type on selected hydrothermal properties of an Alfi...

Alternative water sources for potable or non-potable purposes are now sought as a result of the global crisis of water shortage and rainwater harvesting is one of the several strategies for mitigating the growing water crisis. However, one of the primary issues regarding the use of rainwater is quality. The objective of this study therefore was to...

Rainwater for potable uses has increased in developing countries due to population increase and the failure of conventional means of water supply. However, the quality of roof harvested rainwater and its health implication are issues that require urgent attention. The quality of rainwater harvested from galvanized roofing sheets (GRS) of different...

Scarcity of freshwater is becoming an increasing problem primarily in the arid and semi-arid regions of the world. The study was designed to investigate the effects of wastewater irrigation on soil properties and growth parameters of cucumber (Cucumis sativus) in southwestern Nigeria. The irrigation treatments consisted of kitchen wastewater, rainw...