Abstract
Snap bean ( Phaseolus vulgaris L.) is the most important vegetable crop for export and local market. Even though snap bean is many important, the yield haven been obtained is low mainly due to decline soil fertility and irrigation system problems. Now a day’s Ethiopian soils not only limiting phosphorus and nitrogen nutrients, but also sulfur is a major problem. Water stress that reduced yield and pod quality of snap bean. Irrigation schedule is very crucial to make the most efficient use of irrigation system to avoid excessive water and shortage problem. Snap bean required high amount of nitrogen fertilizer, due to its weak fixation capacity of atmospheric nitrogen. Application of nitrogen at 150 kg N ha -1 increased growth and pod yield parameters snap bean. The optimum rate of phosphorus at 21 kg P ha -1 was applied at the time of seeding in the form of triple super phosphate for snap bean production in Ethiopia. Application of sulfur at 30 kg S ha -1 increased nitrogen, phosphorus and sulfur nutrient availability. Today there is lack of information on snap bean production in Ethiopia, especially NPS fertilizers application and under different irrigation system. Snap bean producers needs optimum rate of NPS fertilizers application and with different irrigation system, so research institutions and higher learning educations generate information to snap bean producers in Ethiopia at site-specific. Keywords: Fertilizers, Irrigation System, Snap bean, Yield DOI : 10.7176/JBAH/9-19-05 Publication date :October 31 st 2019
Highlights
Snap bean (Phaseolus vulgaris L.) comprises a group of common bean that has been selected for succulent pods with reduced fiber primarily grown for its young edible and fleshly pods (Myer and Baggett, 1999; Getachew, 2006)
It is the most important vegetables crop have been exported from developing countries and several African countries have focused on exporting snap beans to high-value European markets (Ghonimy et al, 2009)
As N levels increases from control to 150 kg N ha-1 the growth and yield attributing of snap beans parameters were increased
Summary
Snap bean (Phaseolus vulgaris L.) comprises a group of common bean that has been selected for succulent pods with reduced fiber primarily grown for its young edible and fleshly pods (Myer and Baggett, 1999; Getachew, 2006) It is the most important vegetable crop which is rich in protein, carbohydrates, calcium, vitamins and amino acids. The average pod yield in smallholder farms in eastern and central Africa is low ranging between 4 and 8 t ha-1 (Kimani et al, 2004) due to poor soil fertility and inadequate moisture (Amare and Haile, 1989). Mean maximum and minimum temperature of less than 320C and greater than 100C, respectively with a rainfall ranging from 350 to 700 mm well distributed over 70-90 days (Amare and Haile, 1989) It is grow best in well-drained soils high in organic matter with pH 5.5 to 6.5. Its’ require a continuous supply of moisture, especially during pod set and pod development (Michael and Orzolek, 2002)
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