Effects of Applying Blended Mineral NPS and Nitrogen Fertilizers on Growth, Yield Components, and Yield of Maize (Zea mays L.) in Fedis District, Eastern Ethiopia
Background: Maize is the major and most important cereal crop next to sorghum in eastern Ethiopia. However, the yield of the crop is low mainly due to low inherent soil fertility and poor soil fertility management practices.
Objective: Field experiments were conducted during the main rainy cropping season in 2018 and 2019 to assess the effect of blended mineral NPS and N fertilizer on growth, yield components, and yield of maize varieties.
Materials and Methods: The treatments consisted of two open-pollinated maize varieties (Baate and Melkasa-2), three blended NPS fertilizer rates (50, 100 and 150 kg NPS haâ€“1), and three nitrogen fertilizer rates (43.5, 87 and 130.5 kg N haâ€“1). The experiments were laid out as a randomized complete block design in a factorial arrangement and replicated three times per treatment.
Results: The results showed that leaf area index, plant and ear height, ear diameter, number of kernels per ear, and grain yield were significantly affected by the interaction effects of variety, NPS fertilizer, and year. The maximum ear diameter and the number of kernels per ear were produced from the Baate variety in response to the application of 100 and 150 kg NPS haâ€“1in the 2019 cropping season. Besides, the highest aboveground biomass yield (18.5 t haâ€“1) was obtained from the variety Baate treated with 150 kg NPS and 130.5 kg N haâ€“1. The maximum grain yield (8.0 t haâ€“1) was obtained from the Baate variety in response to the application of 150 kg haâ€“1 NPS in the 2019 cropping season. The application of 87 kg N haâ€“1 produced a high grain yield, which was also found to be economically feasible for both varieties. The partial budget analysis also affirmed that the highest net benefit (44850.0 ETB) with the higher marginal rate of return (764%) was obtained from Baate variety supplied with 150 kg NPS haâ€“1, which was economically more feasible than Melkasa-2 variety with the application of 150 kg NPS haâ€“1(6.7 t haâ€“1 ).
Conclusion: It is concluded that cultivating the Baate maize variety with the application of 150 kg NPS fertilizer haâ€“1 and 87 kg N haâ€“1 was found to be economically optimum for smallholder farmers in the study area to enhance productivity of the crop.
Copyright (c) 2021 Mekuannet Belay Kebede, Habtamu Zeleke Utta
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
- I am authorized by my co-authors to enter into these arrangements.
- I warrant, on behalf of myself and my co-authors, that:
- the article is original, has not been formally published in any other peer-reviewed journal, is not under consideration by any other journal and does not infringe any existing copyright or any other third party rights;
- I am/we are the sole author(s) of the article and have full authority to enter into this agreement and in granting rights to Springer are not in breach of any other obligation;
- the article contains nothing that is unlawful, libellous, or which would, if published, constitute a breach of contract or of confidence or of commitment given to secrecy;
- I/we have taken due care to ensure the integrity of the article. To my/our - and currently accepted scientific - knowledge all statements contained in it purporting to be facts are true and any formula or instruction contained in the article will not, if followed accurately, cause any injury, illness or damage to the user.
- I, and all co-authors, agree that the article, if editorially accepted for publication, shall be licensed under the Creative Commons Attribution License 4.0. If the law requires that the article be published in the public domain, I/we will notify Springer at the time of submission, and in such cases the article shall be released under the Creative Commons 1.0 Public Domain Dedication waiver. For the avoidance of doubt it is stated that sections 1 and 2 of this license agreement shall apply and prevail regardless of whether the article is published under Creative Commons Attribution License 4.0 or the Creative Commons 1.0 Public Domain Dedication waiver.
- I, and all co-authors, agree that, if the article is editorially accepted for publication in Haramaya Journals, data included in the article shall be made available under the Creative Commons 1.0 Public Domain Dedication waiver, unless otherwise stated. For the avoidance of doubt it is stated that sections 1, 2, and 3 of this license agreement shall apply and prevail.