Field pea experiment having different intra-row and inter-row spacing as well as phosphorous fertilizer was conducted at Debre Markos Agricultural Research station in order to refine economically optimum plant spacing and phosphorus fertilizer level. A factorial combination of five P2O5 rates (0, 23, 46, 69 and 92 kg ha-1), two intra-rows (5, 10 cm) and two inter-row (20, 30 cm) spacing was carried out using randomized complete block design with three replications. The results of the analysis of variance indicate that phosphorous fertilizer had a significant effect (p<0.05) on seed yield and yield attributes of field pea, the main effects of intra-row spacing and inter- row spacing had a significant effect (p<0.05) on number of pods per plant, seed and biological yield. The combination of 10 cm intra-row spacing and 30 cm inter-row spacing resulted in the highest seed yield for field pea. Additionally, the maximum seed yield (1942.39 kg ha-1) and net benefit ETB 66,369.26 was observed at 92 P2O5 kg ha-1. Hence, plating kik-type field pea with 10 cm intra-row and 30 cm inter-row spacing's with application of 92 P2O5 kg ha-1is found to be economically feasible and recommended in Aneded district and similar agro ecologies.
Keywords: : Field Pea, inter-row, intra-row, phosphorous fertilizer, seed yield.
