Abstract: Field experiments were conducted at the Teaching and research farm, Delta State University, Asaba Campus, Asaba between 2003 and 2005, to determine the effect of organic fertilizer (poultry droppings) on yield of species of forage crop and in their mixtures. The pastures who sown in plots measuring 5x5m in a split randomized complete block design with four replicates and soil fertilized at a rate of 0.5 t ha-1 and without soil fertility. The pastures were first harvested at 8 week after planting and a regular interval of 4 weeks there after. The result of the study showed that, the yield of sole crops and yield of 2 or more forage crop associations with organic fertilizer application was significantly higher (p<0.05) than with fertilizer applications. Also, the aggregates yield of 2 or more crop association was significantly higher (p<0.05) than their component sole crops in the same plot. The grain legume crop association produced diversify of pastures and higher yield both in quantity and quality. It was concluded that organic fertilizer is a possible replacement for organic fertilizer and a mixture of four forage crops association is recommended than sole or 2 or 3 crop association.
F.N. Emuh and L. Bratte , 2006. Effect of Organic Fertilizer Application on Forage Yield of Four Pasture Species as Affected in the Humid Tropics. Agricultural Journal, 1: 324-327.