Accepted 23rd July, 2016
Haricot bean (Phaseolus vulgaris L. ) is an important cash crop for many farmers and source of protein in many parts of Ethiopia. However, its production is prominently affected by deficiency of phosphorus. Therefore, a field experiment was conducted at Arba Minch University demonstration farm during March-July 2015 cropping season in order to evaluate the response of haricot bean to different doses of phosphorus amendment and its role on growth, dry matter yield and yield components of the crop. Five doses of phosphorous (0, 10, 20, 30 and 40kgha-1) have been applied. Experiment was laid out in randomized complete block design (RCBD) with three replication. Haricot bean variety dinknesh was used as planting material. Phosphorus amendment significantly increased leaf area, dry matter, and crop yield whereas plant height, number of branches per plant , number of pods per plant, number of seeds per plant were not significantly affected. From our statistical findings apparent from the table and figures, we conclude that phosphorous fertilizer rates of 20 kgha-1. is the optimum dose to enhance the yield in haricot bean. Moreover, we recommend 20 kgha-1dosage of phosphorous fertilizer to haricot bean producing farmers. Furthermore, the recommendation is specific to the farm lands that share similar physical, chemical, biological properties to the soil in Arba Minch University demonstration farm, Southeren, Ethiopia.
Keywords: Haricot beans, Diammonium phosphate, dry matter, phosphorus and yield.