Phenological Studies of Two Varieties of Hibiscus cannabinus Linn in Ile-Ife, South West, Nigeria

The phenological study of the flowering, fruiting, foliage and girth changes in two varieties of Hibiscus cannabinus L. with the aim of relating these stages to their different morphological characters. Seeds of the varieties identified as variety A and variety B were planted in different petridishes, they were later thinned downed to five stands and finally planted in medium sized buckets. The time, duration and frequency of leafing, flowering, fruiting, were tracked weekly from the germination period until maturity. The two varieties are different in phenology and can be cultivated for different purposes; the different morphological characters might be under endogenous control. Leaf production is more rapid in Variety B than in variety A hence variety B is recommended for cultivation where numerous, broad and matured leaves are needed. The cultivation of variety B that flowers almost every day of the week is recommended for farmers who wish to make use of the flower and/or fruit production of the plant. Variety A is encouraged for people who need the purple dye for beautifying faces. Keywords: Phenology, Hibiscus, flowering, fruiting, foliage, girth

Dehydrogenase Enzyme Activities in Germinating Cowpea (Vigna Unguiculata (L) Walp)

Investigations through enzymatic assays on germinating cowpea (Vigna unguiculata (L) Walp) seeds reveal that dehydrogenases contributed to the catalyses of stored products in the anaerobic phase of seed germination. This led to the release of energy used in the process of early seed growth in germinating cowpea seeds. The results showed that dehydrogenase enzymes activities followed the pattern LD>AD>SD in a 60>31>9 percent ratio respectively. The enzyme activity curves suggest an initial burst of dehydrogenase activity preceding the initiation of seed germination and seedling vegetative growth in cowpeas. Keywords: Cowpea, Dehydrogenases, Enzyme activity, Germinatio

Analiza kretanja rasta proizvodnje poljoprivrednih kultura u Nigeriji (1961. –2014.)

This paper focuses on trend analysis of crop productivity growth in Nigeria between 1961 and 2014. It was therefore intended to estimate the effect of different factors of production that influence crop output and to compute their technical efficiency, technological change and total factor productivity change. Panel data was broken into land, labour, tractor, fertilizer and animal power. Descriptive statistics, Cobb-Douglas production analysis and Malmquist Productivity index were the tools employed for the analysis. The result of the trend analysis shows that time has a positive effect on crop production and also shows that there is an increase in crop output, land, labour, tractor, fertilizer and animal power over years. Land and animal power are statistically significant at 1% probability level and a unit increase in land and animal power, crop output increases by 2.176772 tons and 0.7531192 tons respectively, this implies that land and animal power have a positive effect on crop output in Nigeria. Labour and tractor have negative impact on crop output, while fertilizer has no significant effect on crop output. The efficiency change, technical change and total factor productivity change were also analyzed. According to the analysis, Nigeria experienced the highest agricultural productivity from 1992, with value of 1.166. It is therefore recommended that the use of agricultural land should be increased, relevant policies should address the constraints to technology progress, and efficiency should be promoted in order to improve productivity growth.Ovaj je rad usredotočen na analizu kretanja rasta proizvodnje poljoprivrednih kultura u Nigeriji u razdoblju od 1961. do 2014. Cilj je ovog rada odrediti kako različiti faktori proizvodnje utječu na količinu proizvedenih kultura te izmjeriti njihovu tehničku učinkovitost, tehnološki razvoj i promjene u ukupnom faktoru produktivnosti. Panel podaci razdijeljeni su u sljedeće kategorije: zemljište, radna snaga, traktori, gnojivo i životinjska snaga (radne životinje). Za potrebe analize korištena je deskriptivna statistika, Cobb-Douglasova proizvodna funkcija i Malmquistov indeks produktivnosti. Dobiveni rezultati pokazuju da vrijeme ima pozitivan učinak na proizvodnju poljoprivrednih kultura te da je tijekom godina zamjetan porast u količini proizvedenih kultura, zemljištu, radnoj snazi, traktorima, gnojivu i životinjskoj snazi. Zemljište i životinjske snaga statistički su značajne kategorije, s razinom vjerojatnosti od 1 %. Porast jedinice zemljišta rezultira porastom od 2,176.772 tona u poljoprivrednim kulturama, a životinjske snage porastom od 0,7531192 tona u poljoprivrednim kulturama. Iz ovoga proizlazi da zemljište i životinjska snaga imaju pozitivan utjecaj na količinu proizvedenih poljoprivrednih kultura u Nigeriji. Kategorije radne snage i traktora imaju negativan učinak, a gnojiva nemaju nikakav značajni učinak na količinu proizvedenih poljoprivrednih kultura. Mjerena je i tehnička učinkovitost te tehnološki razvoj i promjene u ukupnom faktoru produktivnosti. Prema dobivenim rezultatima, poljoprivredna je proizvodnja u Nigeriji 1992. dosegla svoju najveću vrijednost od 1,166. S obzirom na rezultate preporučuje za povećanje poljoprivrednog zemljišta i učinkovitosti te donošenje relevantnih mjera čiji bi cilj bio rješavanje problematike razvoja tehnologije

Social Unrest: Emerging Trends on Transnational companies and Oil-Producing Communities in the Niger Delta Region of Nigeria

Every society is characterized by social relations and group interaction. However, conflict is inevitable due to the fact that human wants are insatiable. A major cause of conflict is oppression, exploitation and inequality. This paper examined youth restiveness in the Niger Delta region of Nigeria. The people inhabiting this geographical area are faced with life-threatening challenges such as pollution of underground and surface water, destruction of land fertility, death of aquatic life arising from oil spillage orchestrated by the activities of Transnational companies and youth restiveness. This paper employed the use of quantitative and qualitative research methods. Multi-stage and purposive sampling were adopted, 250 copies of questionnaire were administered and key informant interviews were conducted in the study area which was located in Eleme, Rivers State, Nigeria. The study focused on Rivers state, which is popularly acclaimed as the economic hub of oil companies operating in the region. The quantitative data collected from the field was presented in a frequency table while the qualitative data provided vital and first-hand details that complemented the quantitative data. Hypotheses were tested with the aid of a regression analysis which determined the nexus between the variables in the paper. Thus, findings in this study showed that there is a need to ensure that corporate social responsibilities, youth empowerment and employment are provided to guarantee the collective development of the people so as to guarantee lasting peace in the area.

Biochemical Properties, In-Vitro Antimicrobial, and Free Radical Scavenging Activities of the Leaves of Annona muricata

Fifteen (15) male Wistar rats were completely randomized into three (3) groups. Group A was normal control, Group B received 200 mg/kg weight of ethyl acetate extract of Annona muricata leaves (AMLE) and Group C received 100 mg/kg b.weight AMLE. Single daily dose of AMLE was administered orally for twenty one (21) days after which the animals were sacrificed. The blood samples were taken for haematological and biochemical analysis. Antibacterial and antifungal activities of n-hexane, ethyl acetate and methanol extracts of Annona muricata leaves were carried out. These extracts exhibited satisfactory inhibitory activities against bacterial and fungal strains, which include; Staphylococcus aureus, Escherichia coli, Bacillus subtilis, Pseudomonas aeruginosa, Salmonella typhi, Klebsiellae pneumonae, Candida albicans, Aspergillus niger, penicillium notatum and Rhizopus stolonifer. N-hexane extract of the plant exhibited antioxidant property by scavenging DPPH radicals with IC50 of 342.44 μg/mL. GC-MS analysis of nhexane, ethyl acetate and methanol extracts of the plant principally revealed the presence of Urs-12-ene (23.15%), Squalene (48.80%) and Clionasterol (15.88%) respectively. Keywords: biochemical properties, antimicrobial, antioxidant, urs-12-ene, squalene, clionastero

Development of a Solar-Powered Integrated Wireless Soil Moisture Meter

In this study, we developed a solar-powered integrated wireless soil moisture meter that can easily measure in situ soil moisture, soil temperature, and hydrogen potential (pH) using nature\u27s solar energy. Knowledge of soil moisture content and other relevant soil-specific parameters is essential for irrigation scheduling, fertilizer selection, and fertigation. Also, considering that the electricity supply in some developing countries is either erratic or unavailable, this research aims to bridge the gap in electricity availability and ease of measurement and integrate more soil-specific parameters. The sensor system was developed using the frequency domain (FD) technique for fast response. These parameters were measured sequentially at an interval of about 5 seconds, with the readings displayed simultaneously on a Bluetooth-connected device (e.g., an Android phone) located about 50 meters away from the developed system. The different sensors are classified and adequately labeled to identify the parameter to be measured. The performance evaluation carried out indicated a reasonably functioning device that is cost-effective. The results obtained showed that the system was resourceful as it not only measured the parameters of interest (soil moisture, temperature, and pH) but also gave a prompt response in measurement and transmission. Overall, the developed wireless soil moisture meter provides instantaneous data on pH, moisture, and temperature circulation across soil layers. The system is promising as it can be integrated into large-scale automated irrigation systems for agricultural lands

Utjecaj klimatskih promjena na proizvodnju riže u Adamawi, Nigerija

This study analyzes the effect of climate change on rice production in Adamawa State, Nigeria. The study describes the trend in rice production and determines the factors affecting the output of rice in Adamawa. Secondary data from 1990-2015 was used. The analytical tools used were descriptive analysis, unit root and regression analysis. The result of the study reveals that there is variation in the trend of the climatic factors affecting rice production in Adamawa State. The findings reveal that rainfall and minimum temperature are the major climatic factors that affect the rice production; such that 1% increase in rainfall leads to 22.2% increase in rice production and 1% increase in minimum temperature leads to 3.7% reduction in rice production. Therefore rainfall is found to be positively significant to rice output, while minimum temperature is found to be negatively significant. The study therefore recommends that irrigation facilities should be built, especially in the north where drought threatens food production. Also breeders should develop rice varieties that have less gestation period and can survive high temperature.Ovaj se rad bavi utjecajem klimatskih promjena na proizvodnju riže u Adamawi, Nigerija. Opisuju se trendovi rasta i pada proizvodnje te određuju faktori koji utječu na količinu proizvedene riže. Istraživanje se temelji na sekundarnim podacima iz razdoblja od 1990. do 2015. Za analizu su korištene sljedeće metode: deskriptivna analiza, test jediničnog korijena i regresijska analiza. Rezultati dobiveni istraživanjem pokazuju da klimatski faktori utječu na proizvodnju riže u Adamawi, a kao glavni među njima ističu se količina padalina i minimalna temperatura: porast u količini padalina od 1 % rezultira porastom u proizvodnji riže od 22.2 %, a porast minimalne temperature od 1 % rezultira padom u proizvodnji riže od 3.7 %. Iz toga se može zaključiti da postoji pozitivna korelacija između količine padalina i količine proizvedene križe te negativna korelacija s obzirom na minimalnu temperaturu. S obzirom na dobivene rezultate preporučuje se izgradnja objekata za navodnjavanje, osobito na sjeveru gdje su sušna razdoblja prijetnja proizvodnji hrane. Također, uzgajivačima se preporuča razvoj vrsta riže koje imaju kraći gestacijski period te mogu preživjeti više temperature

Moderating Role of Demographic Characteristics in Breast Cancer Awareness and the Behavioural Disposition of Women in Ogun State, Nigeria

BACKGROUND: Breast cancer incidence is fast increasing, posing a significant threat to the health of women of all races globally. In Nigeria, breast cancer causes the most cancer-related deaths among women each year as a result of inadequate awareness. AIM: This study is aimed at examining the moderating role of demographic characteristics in facilitating breast cancer awareness among women, and how it relates to their behavioural disposition to the disease. METHODS: The study adopted the descriptive (survey) and cross-sectional research designs to elicit information from women of adult age selected across five Local Government Areas in Ogun state. The data, collected through questionnaire were analysed through the use of a variance-based SEM Partial Least Square (PLS). RESULTS: The result shows that demographic characteristics (age and education) has a significant positive effect and jointly explain 74.9% of the variance in the breast cancer awareness and behavioural disposition among women in the study area. The findings revealed that a significant number of women with breast cancer had not acquired useful knowledge that could potentially be used to diagnose, prevent, and manage the disease. Unfortunately, the practice of Breast Self-Examination is grossly low among Nigerian women, as a consequence, only 20-30% of the women in study areas, including professionals, are aware of the benefits of BSE and only a smaller percentage practice BSE. CONCLUSION: There is, therefore, a need to educate women on the benefits of this simple life-saving procedure through the consistent use of media platforms