2026-04-03T22:49:12Z https://www.peertechzpublications.org/oai-pmh

oai:www.peertechzpublications.org:10.17352/2455-815X.000163 2022-07-12 PTZ.IJASFT:VOL8

Enhancing maize yield in Ethiopia a meta-analysis Tefera Merga Weifang Zhang Zhao ShuaixiangDuan Zhiping<p>Accurate nitrogen (N) fertilization and optimum plant density increase crop yields. In this study, I report the effects of N fertilization rate and plant density on maize yield in a meta-analysis, by using observations from 15 studies conducted in Ethiopia since the 2000s for possible refinement of N fertilizer and plant density recommendations. I assessed the response of maize to different N rates ha−1 compared to the control using the yield response approach. Application of N fertilizer significantly increased maize yields by 31.5% - 65.9% compared to control. plant density increased maize yields by 42% - 72.4% compared to the control. The interaction effect of the N rate increased maize yields by 27.6% - 95.9%, with Plant density, 58.7% - 152% on loam soil, compared to control yield. The interaction effect of Plant density with soil type increased maize yields by 47% - 108% on loam soil.&nbsp;</p><p>In conclusion, the grain yield of maize increased with increasing N rate and plant density up to the optimum. Therefore, it’s possible to recommend using a high N rate with both low and medium plant density (&lt; 45,000 plants ha-1) and (45,000 to 65,000plants ha-1) to harvest high grain yield.&nbsp;</p> International Journal of Agricultural Science and Food Technology - Peertechz Publications 2022-07-12 Research Article https://doi.org/10.17352/2455-815X.000163 en Copyright © Tefera Merga et al.