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.

Temperature and rainfall are important variables that affect maize yield, and as such this study aimed at evaluating the impact of onset, cessation of rainfall and temperature on maize yield in Akure. To achieve this objective, climatic parameters comprising daily rainfall and temperature (maximum and minimum temperature) 1981-2016 for Akure, were obtained from the archives of the Nigerian Meteorological Agency, NiMet. Annual maize yield data for the same period 2000-2016 were obtained from Ondo State Agricultural Development Programme. Walter's method, as modified by [1], was then used to determine the onset, cessation and length of growing season. The significance of the annual trend of these climatic parameters was also tested using an approach involving z-test and p-value analysis. Likewise, the significance of all the climatic parameters contributing to maize yield was also determined based on the p-value approach under a null hypothesis. The coefficients of determination (R 2 ) and Pearson correlation coefficient (r) in relation to the SLR and MLR models were calculated. The result showed a slight decreasing trend of rainfall, increasing trend of maximum, minimum and maize yield. Their associated p-values are 0.6925, 0.5794, 0.5136 and 0.0630, which showed that the trend over the years was not statistically significant at the 1%, 5% and 10% levels; however maize yield was significant at 10% significant level. The mean onset, cessation and length of growing season for Akure were 8 th March ± 9, 21 st October ± 21 and 239 days ± 27 days. The relationship between maize yield and all climatic variables in association with SLR model showed that rainfall was the major contributing variable to maize yield in Akure, Ondo State at all significant levels (p-value (0.009539) < 0.01, 0.05 and 1 r = 61%, R 2 = 37%). The p-value in association with MLR model, also