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International Journal of Agronomy
Volume 2017, Article ID 4253917, 13 pages
https://doi.org/10.1155/2017/4253917
Research Article

Effects of Varieties and Nitrogen Fertilizer on Yield and Yield Components of Maize on Farmers Field in Mid Altitude Areas of Western Ethiopia

1Natural Resources Management Research Process, Ambo Agricultural Research Center, Ethiopian Institute of Agricultural Research, P.O. Box 382, Ambo, West Showa, Oromia, Ethiopia
2Support to Agricultural Research for Development of Strategic Crops in Africa (SARD-SC), ICARDA, c/o ILRI, P.O. Box 5689, Addis Ababa, Ethiopia
3International Maize and Wheat Improvement Centre (CIMMYT), Global Conservation Agriculture Program, P.O. Box 5689, Addis Ababa, Ethiopia

Correspondence should be addressed to Tolera Abera; moc.liamg@4102iiwwaht

Received 14 August 2017; Accepted 10 October 2017; Published 29 November 2017

Academic Editor: Cristina Patanè

Copyright © 2017 Tolera Abera et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Yield of maize hybrids could be low when grown below optimum management practices. Use of improved varieties and optimum nitrogen fertilizer application practices are unlocking the high yielding potential of hybrids maize. With these in view, a field experiment was executed on farmers’ field to determine the effect of varieties and nitrogen fertilizer rate on yield and yield components of maize in two cropping seasons. It is laid out with randomized complete block design in factorial arrangement with three replications. Five maize varieties (BH-540, BH-543, BH-661, BH-660, and BH-140) as main factor and two levels of nitrogen (55 and 110 Kg N ha−1) as subfactor were used with one maize variety (BH-543) without fertilizer as control. Leaf area and leaf area index of maize varieties were significantly affected by application of nitrogen fertilizer rates. Interaction of maize varieties with nitrogen fertilizer rates significantly affected all yield and yield components of maize. Application of half and full recommended nitrogen fertilizer produced mean grain yield advantages of 31 and 41% over control. Therefore, application of half and full recommended nitrogen fertilizer for improved maize varieties has significantly improved grain yield and recommended for maize production in midaltitude area of western Ethiopia.