This article aimed to review the potential of Moringa oleifera tree, emphasizing its nutritional applications for humans, industrial uses and its propagation methods, as not everyone knows the enormous benefits it has. It is an exceptionally nutritious vegetable tree with a variety of potential uses. The tree is considered one of the world's most useful trees, as almost every part of the tree can be used for food, or has some other beneficial property.

A mini field trial on the use and bio-decomposition of moringa oleifera seed cake as organic fertilzer was carried out in the Sheda Science and Technology Complex. The field investigation established the fact that organic farming based on the use of processed Moringa Oleifera seed as fertilizer on a maize farm achieved significant improvement on soil nutrients as shown in the plant yield as compared to the control. This integrated biodiversity management approach to agriculture will afford the farmers in developing societies like Nigeria ready sources of organic fertilizers with a view to optimizing crop production and environmental protection and ultimately reduce poverty.

An elemental analysis of the soil in the experimental plot before and after application of moringa oleifera seed cake as fertilizer on a Maize plant was carried out. From the analysis the result showed that the moringa oleifera seed cakes increased the mineral content of the soil. This in turn increased the yield of the maize crop as compared to the control.

The purpose of this paper is to examine the causal relationship between energy consumption and National income of Nigeria. The importance of identifying the direction of causality emanates from its relevance in national policy-making issues regarding energy conservation. There are various evidences indicating some level of relation between national income and energy consumption of many countries: developed, developing, and third world alike. A relation that energy consumption enhances national income has been documented by Rakhshan for Canada, China, Japan (poor positive relation due to its efficient and successful energy conservation policy over the past decades), Iran, and Russia. More so, Amirat and Bouri found similar relation for Algerian Case. Also, Huang, Hwang, and Yang found no causal relationship between energy consumption and economic growth in the low income group whereas in the middle income groups, economic growth enhances energy consumption; and in the high income group countries, economic growth negatively affects energy consumption due to great environmental improvement impacts. On the other hand, a neutral relation between energy consumption and national income has also been verified to exist in Turkey according to Yalta's study. Therefore this paper evaluate the relationship between energy consumption and national income in Nigeria for the periods 1990 to 2010. Pearson correlation coefficient was used to determine the nature of the relationship that exist between energy consumption and national income while Granger causality test was employed to identify the direction of the relationship. The variables that were used include national income measured by GDP, energy consumption measured by its index, capital input and manufacturing capacity utilization. The energy combined includes coal, electricity (hydro-power), natural gas and petroleum products.

Physical and chemical properties of the soil samples from the three regions; Donga, Ibi and Wukari in the southern part of Taraba State, Nigeria were determined. These are colour, pH, and conductivity while the mineral compositions investigated (soil nutrients) were N, P, K, Ca, Mg, Fe, Na, Mn and Zn by highly sensitive methods. The pH ranges from 6.1 -6.8, 6.2 -6.8, 6.1 -6.8 at Donga, Ibi and Wukari respectively. The conductivity ranges from 0.72 -1.65 x10 2 µS /cm, 0.78 -2.58 x10 2 µS /cm, 0.57 -1.90 x10 2 µS /cm respectively. The results indicated that Donga and Wukari had relatively higher nutrients than Ibi. However Mn and Zn were absent in some locations of the study areas but at Ibi Zn was not detected at any of the sample site.