Rainfall erosivity index is one of the important factors influencing soil erosion. Erosivity index for Abuja, Rainfall erosivity index is one of the important factors influencing soil erosion. Erosivity index for Abuja, Rainfall erosivity index is one of the important factors influencing soil erosion. Erosivity index for Abuja, Rainfall erosivity index is one of the important factors influencing soil erosion. Erosivity index for Abuja, was evaluated using the Lombad was evaluated using the Lombad was evaluated using the Lombad was evaluated using the Lombadi i i i method. T method. T method. T method. T Nigerian Meteorological Agency (NIMET) Abuja. Daily kinetic energy Nigerian Meteorological Agency (NIMET) Abuja. Daily kinetic energy Nigerian Meteorological Agency (NIMET) Abuja. Daily kinetic energy Nigerian Meteorological Agency (NIMET) Abuja. Daily kinetic energy = 1.03V = 1.03V = 1.03V = 1.03Vd d d d 1.51 1.51 1.51 1.51. The results showed that the average annual rainfall erosivity index for the city for the period of study. The results showed that the average annual rainfall erosivity index for the city for the period of study. The results showed that the average annual rainfall erosivity index for the city for the period of study. The results showed that the average annual rainfall erosivity index for the city for the period of study was 1131.86 MJmm/hr. The correlation between annual erosivity index and average annual precipitation was 1131.86 MJmm/hr. The correlation between annual erosivity index and average annual precipitation was 1131.86 MJmm/hr. The correlation between annual erosivity index and average annual precipitation was 1131.86 MJmm/hr. The correlation between annual erosivity index and average annual precipitation expressed as

This study involves the construction, installation and testing of a small farm gravity drip irrigation system on a land area of 900m 2 (30mx30m). It was done using a network of polyvinyl chloride (PVC) pipes of three sizes (which served as the main, submain and laterals), control valves (located on the sub main) and micro emitters (which controlled uniform application of water and fertilizer directly into the root zone of the plant by gravity). The water application uniformity of the system was determined by measuring emitter flow rates at the times required to fill a container of 1 litre. Fertigation chamber was incorporated into the system for fertilizer application. The average discharge rate from the emitters was 5.5 l/hr. The average wetting diameter and wetting depth of 60 cm and 1.5 m respectively were achieved. The emission uniform of 85% and above compared favourably with micro irrigation uniformity classification standard based on American Society of Agricultural Engineers (ASAE). It is recommended that the system be flushed after each irrigation season to prevent clogging.

This work studied variations in certain climatic parameters, specifically precipitation, soil moisture and outgoing Long wave radiation (OLR) from the earth from 1997 to 2006 in Makurdi, Nigeria. Results showed that precipitation rate in Makurdi deviated from the normal annual bimodal pattern of precipitation in Nigeria. Precipitation was highest in August/September throughout the study period. The dependent of soil moisture on precipitation is highly significant as shown by the high positive value (81%) of R2. Soil moisture content also varied similarly while OLR varied inversely. The effects of the variations of these parameters on agricultural production are highlighted.