Analysis of ill-health and technical efficiency of maize farmers in selected local government areas of Osun state, Nigeria

Several farmers have died or incapacitated as a result of preventable and curable health challenges. These challenges no doubt have had negative impact on farmers’ welfare, agricultural production, efficiency of the farmers and the economy of developing countries like Nigeria. Though it is a known fact that ill-health is devastating but the extent of the devastation may not be known with certainty until it is scientifically proven through research. The study therefore investigated the effect of ill-health on the technical efficiency of maize farmers in Osun, State, Nigeria. 220 farmers were interviewed while the tools of analysis included descriptive statistics, stochastic production frontier and cost of illness procedure. The results revealed that aches (34.32%) and malaria (22.53%) were the most prevalent illness in the area while the perceived causes of illness included stress, poor financial base and, inadequate medical facilities. Meanwhile, the main sources of treatment included consultation with herbalists, local/self medication and hospitals. The main challenges in seeking for good health comprised inadequate medical personnel, inadequate finance and, long distance of the clinics/hospitals from their farm/residence. Time cost accounted for the largest proportion of the economic cost of illness. In addition, access to health care services, number of days absent from farm due to illness and amount spent on drugs all had significant effect on the technical efficiency of the farmers. With a mean of 0.64, none of the farmers operated at the frontier level of technical efficiency. Based on the results, it is therefore recommended that extension personnel should educate the farmers on the need for adequate rest always and use of treated mosquito nets at night.Keywords: Efficiency, ill-health, self-medicatio

Groundwater Quality Assessment of Abandoned Dumpsite in Osogbo Suburb, Nigeria: Hydrogeological and Geophysical Condition Six Years after Initial Study

In this paper, we describe the result of a recent hydrogeological and geophysical investigation carried out within and around Aduramigba - Onibu-Eja Estate dumpsite with the aim of detecting evidence of contamination as well as depths to contamination of the groundwater after a previous study six years ago. Twenty water samples from shallow water wells and boreholes were analyzed for their physico-chemical constituents while five vertical electrical soundings and five electromagnetic ground penetrating radar surveys were conducted. The result shows high concentrations of anions of nitrates (NO3-), bicarbonates (HCO3-), chloride (Cl-) and sulphate (SO42-) with values of 73.97 mg/l, 91.5 mg/l, 331.2 mg/l, 222.4 mg/l respectively, cations values of Mg2+, Fe2+, Na+, and K+ having value of 25.44 mg/l, 6.23 mg/l, 37.31 mg/l and 35.41 mg/l, respectively, which were far above the World Health Organization (WHO) and Nigeria Drinking Water Quality Standard (NDWS). Heavy metal components such as Lead, Zinc, Copper and Nickel were also observed to be on the high side, having been contributed from effluents from rust metallic materials cum chemicals dumped within the dumpsite. Detailed geophysical study reveal the depth to contamination at between 4.1 meters in VES 3 to 5.9 meters in VES 2 with resistivity as low as 5.12 Ωm in VES 2 to 7.12 Ωm in VES 3 while ground penetrating radar (GPR) revealed that the leachate has permeated to a depth of 3.5 – 5.25 meters in traverse 4 and 4.0 – 6.0 meters in traverse 3 which correspond to the depth to unconfined aquifer within the dumpsite. The study conclude that this would pose a greater threat to residents living in this vicinity and as such, this might have contributed to the closure of the dumpsite

Correlation and path coefficient analysis of top-cross and three-way cross hybrid maize populations

Open Access JournalGrain yield is a complex quantitative trait that depends on a number of other traits for selection. This study was carried out to reveal the pattern of association with and contribution of traits to grain yield in two maize populations evaluated in three agro-ecological zones of South-Western Nigeria during the 2014 cropping season. The experiment consisted of 10 top-cross and 10 three-way cross maize hybrids, laid out in a randomised complete block design with three replications. Genotypic and phenotypic correlation coefficients and path co-efficient analyses were performed for each hybrid population across the three locations. Results showed significant (p≤0.05) differences between the two hybrid populations for all the traits mentioned except days to 50% anthesis, ear diameter and 100-grain weight. Field weight in both hybrid populations, number of kernel rows per cob, ear diameter and ear height in top-cross hybrids, as well as ear length and 100-grain weight in the three-way cross hybrids were directly correlated with grain yield. The link between direct and indirect effects on grain yield depends on hybrid population, although some traits showed similar direct effects in both hybrid populations. These traits can be used as the main criteria for grain yield improvement in the respective hybrid populations

Pectinolytic activities of pectinase produced by some bacterial isolates cultured from deteriorating fruits

Microbially derived pectinases have been shown to have due advantages over those produced from other sources because of the ease in manipulating the microorganisms to increase yield. The study was undertaken to determine the pectinolytic activities of pectinase produced by some bacterial isolates cultured from deteriorating fruits under submerged fermentation. Deteriorating oranges and grapefruits were collected and surfaced sterilized. Thereafter, 1 g of each sample was homogenized and transferred into 10ml sterile distilled water. The suspensions were agitated, streaked onto nutrient agar and incubated at 37 oC for 24 h. The isolates were screened for pectinolytic activities and identified using standard protocols. The specific activities of the enzyme and the physicochemical factors were analysed. The isolates identified were Bacillus subtilis, Bacillus cereus, Staphylococcus aureus, and Klebsiella aerogenes isolates. The specific activities of pectinase produced by the isolates were between 26.40- 52.27 U/ml. The isolates reacted differently to the different substrates used. The optimum temperature for the activity of pectinase observed from the isolates was 50 oC and the pH varied between pH 4 and 8. Sodium azide at 1 mM and EDTA at 10 mM were observed to inhibit pectinase activity in all the isolates. The isolates showed promising potential for pectinase production under optimal physicochemical conditions.Keywords: Bacteria, Pectinase, deteriorating fruits, submerged fermentation, physicochemical parameter

Safety, Quality Control, And Sustainability In Construction: Exploring The Nexus - A Review

This comprehensive review elucidates the intertwined relationship between safety, quality control, and sustainability within the construction sector, highlighting the critical need for integrating these elements to promote optimal project outcomes and long-term industry advancement. The study commences with an in-depth exploration of existing literature, focusing on diverse methodologies, strategies, and frameworks employed to enhance safety and enforce stringent quality control, thus contributing to the overall sustainability of construction projects. Safety is identified as a paramount concern in construction, significantly influencing both quality and sustainability. The lack of safety not only jeopardizes human lives but also results in cost overruns and project delays, undermining the overall quality and sustainability. Quality control, herein, is discussed in relation to its pivotal role in minimizing errors and rework, ensuring adherence to standards, and facilitating the attainment of sustainability goals through resource efficiency and waste reduction. Sustainability in construction is dissected through its three foundational pillars: economic viability, social equity, and environmental integrity. This review details how the integration of safety and quality control significantly impacts these pillars, highlighting the synergy between construction practices, resource optimization, stakeholder well-being, and ecological preservation. Empirical studies, theoretical frameworks, and case studies form the basis of this review, providing a multifaceted understanding of the interdependence between safety, quality control, and sustainability in construction. The assessment reveals that the construction industry is progressively acknowledging the inherent connection between these components, with contemporary practices and policies increasingly reflecting an integrated approach. The article concludes by underscoring the imperative for continuous research and development, innovations, and policy interventions to strengthen the nexus between safety, quality control, and sustainability in construction. It also advocates for a holistic approach that unifies these elements to drive industry resilience, promote sustainable development, and ensure the well-being and prosperity of communities and the environment

Effects of four pre-sowing treatment methods (double phase) on the germination of the seeds of Afzelia africana Sm. ex Pers

The study investigated the effects of four pre-treatment methods on the germination response of the seeds of Afzelia africana (Sm. ex Pers) in the savannah ecozones of Nigeria. The experiment was carried out in two phases. Phase I involved; 50% concentrated sulphuric acid for 10 minutes, hot water at 100ºC for 3 minutes, cold water at room temperature for 24 hours, Mechanical scarification (rubbing on abrasive concrete surface). Phase II of the experiment was carried out based on the result of phase I. Mechanical scarification, which performed best among the treatments used in the first phase, was closely examined. The various mechanical scarifications used were rubbing the seeds on abrasive concrete surface to the length of 1mm into the seed coat, 2mm, 3mm and 4mm. The experimental layout used was Completely Randomized Design. For phase I, mechanical scarification had 25% germination rate and had the highest germination compared to other treatments. Due to the performance of mechanical scarification in phase I, varying mechanical scarification treatments were further investigated in phase II of the experiment. The result of the analysis of variance indicated a significant difference between the varying mechanical scarification treatments (p≤0.05). Separation of the means showed that 1mm mechanical scarification treatment differed significantly from all other treatments. 1mm mechanical scarification treatment gave an average germination of 50% and early emergence of 9 days. Therefore, 1mm mechanical scarification treatment was regarded as the best mechanical scarification treatment for the germination of Afzelia africana seeds.Keywords: pre-treatment, dormancy, germination, Afzelia african

Perception of farmers on agroforestry systems adoption in Akinyele Local Government Area, Ibadan, Oyo State, Nigeria

The study assessed farmers’ characteristic variables and perception towards the adoption of agroforestry practices in Akinyele Local Government, Ibadan, Oyo State. Multistage Sampling Technique was used for the study. Five Wards which include Ijaye /Ojedeji, Ajibade/Alabata/Elekuru,  Akinyele/Isabiyi/Irepodun, Ojo Emo/Moniya and Ojoo/Ajibode/Laniba were randomly selected from the Local Government Area. Ajeja, Alabata, Akinyele, Moniya and Idowu oko areas were selected from each of the Wards, respectively while ten (10) farmers were selected from each of these areas. Descriptive statistics such as frequency and percentage distributions as well as correlational studies were used to analyse the collected data. 34 % of the respondents were involved in the practice of agroforestry according to the study. The correlation (r value) at (p< 0.01) also shows that there is a significant association between respondents’ characteristic variables such as age, educational and marital status and adoption of agroforestry practices, while age, sex, marital and educational status are significant on agroforestry perception. It is recommended that awareness  on benefits of agroforestry should be raised in order to create needed awareness and its importance, adequate technical supports should be  provided for farmers interested in practicing agroforestry and also the efficient use of available farmlands of all types of landholders should be  ensured. Keywords: Farmers’ characteristic variables; Perception; Adoption; Agroforestry practices

Consumption Pattern and Indigenous Knowledge of Moringa Oleifera among Dwellers of Rural Enclaves around Ibadan Metropolis, Oyo State, Nigeria

Moringa oleifera is a perennial plant which has high economic and medicinal values in many countries of the world. This study was carried out to investigate the indigenous knowledge and consumption pattern of Moringa oleifera among dwellers in rural enclaves around Ibadan metropolis. The study covered 5 rural settlements around   Ibadan metropolis which are Gbopa, Olodo, Onipe, Ibuso gboro and Abapanu. 20 households were selected from each settlement to arrive at a total number of 100 questionnaires out of which 90 were retrieved. The data was analyzed using descriptive statistics and multiple regression analysis. It was discovered that Moringa oleifera has 2 local names in the area which are ‘’gbogbonise’’ and ‘’ewe igbale’’ but majority of the respondents knows the plant as Moringa. It was also found out from findings that most of the respondents use the plants because of the medicinal value attached to it. Education and household size positively and significantly influence Moringa consumption at 0.05 level of significance. The study therefore recommends that household members should try and get adequate training necessary for effective consumption of the plant

Distribution of metals in Labeo coubie (Ruppel, 1832) from a National Park river in Nigeria

This study assesses heavy metals distribution in body parts of Labeo coubie (African carp) fromRiver Oli, in Kainji Lake National Park as pollution index of the ecosystem. Fish parts samples (gills, muscles andvertebra bone) were prepared and specifically analyzed for the levels of Pb, Cr, Zn, Cu, Fe and Cd using Atomicabsorption spectrophotometry. The concentration of metals in the samples at different concentrations ranged from0.001±0.000 μg/g for Cd to 224.87±4.07 μg/g of Fe in the fish gill. There is significant (p<0.05) differences in the Pb,Zn, Cu and Fe concentrations across the different fish parts with gills accumulated the highest levels metals while Crlevels significantly (p<0.05) differed in the fish body parts and accumulated more in the muscles (10.75±0.15 μg/g).The mean concentrations of metal elements in the fish parts had shown some distinguish connection in its distributionswith Pb and Cu; Gills > Muscles > Vertebra bones, Fe and Zinc; Gills > Vertebra bones > Muscles while Cr wasdistributed in Muscles > Gill > Vertebra bones. However, it is revealed that Labeo coubie, a euryphagus fish probablyabsorb these metals through ingestion of contaminated food or absorption by the gills and bioaccumulate in differentfish parts. It is therefore established that River Oli is contaminated with heavy metals as presence of these metals infish is an indication of its immediate environment. Keywords: absorption, bioaccumulation, fish parts, heavy metals, pollutio

On the use of phosphor thermometry for temperature monitoring in manufacturing processes

In the metalworking industry, continuous monitoring and control of temperature is vital to enhance process efficiency, reduce wastage, and attain product reliability in high-value manufacturing processes. The capabilities of conventional techniques such as the use of thermocouples and infrared thermometry for measuring temperature in these processes are limited. For example, in forging processes, there may be a need for mechanical alteration of the die to accommodate thermocouples for die surface temperature measurements, and with infrared thermometry, knowledge of the emissivity of the surfaces of process components is required for accurate temperature measurements. Given that phosphor thermometry has not previously been used in manufacturing processes, here, we report its potential implementation using the phosphor Mg4FGeO6:Mn for measurements of die surface temperature in a forging press. First, with this phosphor, laboratory trials were conducted to describe the cyclic heating of a die by pre-heated billets, which is a process leading to thermal fatigue that requires monitoring in practical applications. Then, the phosphor thermometry technique was demonstrated for die temperature measurements on a 2100 tonne screw press at the Advanced Forming and Research Centre (AFRC). The results show that phosphor thermometry is a candidate technique that would potentially enable more accurate measurements not possible by other techniques in this manufacturing process