Refining Fertilizers Rate Recommendation for Wheat (Triticum aestivum) at Kafa Zone Adiyo Wereda

To refining the effect of different fertilizers NPKS with common Zn and B has significant higher yields in each fertilizer levels on wheat, an experiment were conducted at Adiyo Wereda Kaffa Zone. The experiment was laid out in simple randomized complete block design having three replications. Plot size of 9m2(3 m x 3 m), seed rate of 150 kg ha-1 and row to row distance of 20 cm was used. Various combinations of each fertilizers N (0, 46, 92,138,176 and 222 kg ha-1 with 69p2o5,80k2o,30s,2 Zn and 1B), P (,0,23 ,46,69,92and115 kg ha-1 with 92N,90k2o,30s,2 Zn and 1B), K (0,18,36,54,72and 90 kg ha-1 with 92N,69p2o5,30s,2 Zn and 1B) and S (0,10,20,30,40 and 50 kg ha-1 with 92N,69p2o5,90k2o,2Zn and 1B with additional treatments, control and recommended NP in each fertilizers were used. N=urea; P=TSP; K= KCl; S= CaSO4; Zn=ZnSO4; B = Borax were used as a sources of NPKSZnB. Recommended rates of NP (64:20 kg ha-1) were applied. Nitrogen was applied in two split doses half at sowing and half about 35-45 days after sowing. Variety Digalo was used during the experiment. Plant height, Spike length, Grain yield and biomass were significantly affected by different fertilizers levels. Grain Yield significant at different fertilizer levels 176 N kgha-1 (3400.3kgha-1), 115P kgha-1 (4221.2 kgha-1), 90K kgha-1 (4128.9 Kg ha-1) and 40S kgha-1 (3987.0 kgha-1) were produced respectively in the interaction of ZnB. Based on the results, it is recommended a combined application of NPKS (176 kg N ha-1,115 kg P ha-1, 90 kg K2O ha-1 and 40 kg S ha-1 with 2kg Zn ha-1 and 1kg B ha-1) fertilizers to achieve sustainable bread wheat production on the study area. Keywords: fertilizer rates, wheat DOI: 10.7176/FSQM/120-03 Publication date:October 31st 202