Determination of Some Soil Physico - Chemical Properties of an Ultisol as Influenced by Npk Fertilizer and Cropping Ratios of Maize (zea Mays L. ) – Egusi Melon (citrullus Colocynthis Hook L.) in Rainforest Area of Nigeria

Field experiments were conducted (2009, 2010, 2011) at the Teaching and Research Farmland of the University of Benin to determine the effectof seven ratios (1:0, 0:1, 1:1, 2:1, 3:1, 1:2 and 1:3) of maize-egusi melon intercrop under four (0, 200, 400, 600 kg/ha) and six (0, 200, 400, 800, 1000 kg/ ha) levels of NPK fertilizers on some soil properties of an utilsol in Benin City, Nigeria. The results of the soils physico-chemical properties prior to planting and after harvesting of maize and egusi-melon showed significant differences (p