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Abstrakt

Evaluation of Different Blended Fertilizers Types and Rates for Better Production of Wheat in Esera Woreda, Dauro Zone

Yehuala Alemneh, Aynalem Kutafo

Production and productivity of wheat is decreased mainly by soil fertility depletion and inappropriate rate of poor nutrients availability. Crop specific fertilizer recommendation is necessary for sustainable crop production. Accordingly, a field this experiment was conducted during the main rainy season of 2017 and 2018 to evaluate blended fertilizer types and rates effect on improving production of wheat in Esera woreda, Dauro Zone, Southern Ethiopia. The experiment was laid out in Randomized Complete Block Design with three replications. The experiment consisted of ten treatments viz. control, (150NPSB+41urea) kgha-1, (250 NPSB+102) kgha-1, (150 NPSB+41urea+cu) kgha-1, (200 NPSB+71 urea +cu) kgha-1, 250NPSB+102urea+cu) kgha -1, (173.2 NPS + 4.87 ZnSO4) kgha-1, (189.5k NPS + 6.5 ZnSO4) kgha-1, (237NPS +8.125 ZnSO4) kgha-1, treatments. Blended fertilizers were applied at planting time and urea was top dressed after 35 days of planting. Application of blended fertilizer significantly (p < 0.05) increased the grain yield, and aboveground biomass, as compared to the control. On the other hand plant height, number of tillers per plant, spike length and number of seeds per spike were not shown significance. The maximum grain yield 2979.2 kg ha-1 and minimum (1989.6 kg ha-1) were obtained from the application of 237 NPS +8.125ZnSO4 kg ha-1 and 200+71urea +cu, respectively. The application of 173.2NPS + 4.87 ZnSO4 kg ha-1 had maximum and acceptable Marginal rate of return (MRR %) and net benefit. Therefore, this type and rate of blended fertilizer can be recommended since it produced a high marginal rate of return, high net benefit, and relatively low total cost of production, for wheat production in the study area and other similar agro-ecologies