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Response of Teff ((Eragrostis tef (zucc.) Trotter) to nitrogen and phosphorus applications on different landscapes in eastern Amhara

OAR@ICRISAT

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Relation http://oar.icrisat.org/12151/
https://www.cell.com/heliyon/pdf/S2405-8440(23)05021-1.pdf
https://doi.org/10.1016/j.heliyon.2023.e17813
 
Title Response of Teff ((Eragrostis tef (zucc.) Trotter) to nitrogen and phosphorus applications on different landscapes in eastern Amhara
 
Creator Gedamu, S A
Aragaw, K S
Abush, H T
Agegnehu, G
 
Subject Soil
Fertilizers
Ethiopia
 
Description The dynamic nature of soil fertility status across different landscapes attracted research attention in Ethiopia and the globe. Teff [Eragrotis tef] is a major staple cereal crop in Ethiopia but yields are low due to inadequate nutrient supply and other constraints. A field study was conducted in
2020 and 2021 in the Habru district of Amhara Region to determine teff yield response to fertilizer-N and -P at hillslope, midslope, and footslope positions with slopes of >15%, 5–15%, and 0–5%, respectively. N and P fertilizer rates were factorially combined in randomized complete
block design with three replications in each farmer’s field. A linear mixed modeling framework was used to determine effects on grain yield due to N rate, P rate, slope, study sites, and years. Model fit was examined using Akaike’s Information Criterion and Bayesian Information Criterion. Economic analysis was done with a quadratic response function to determine the economics of fertilizer. Yield response to fertilizer-P was affected by slope but the response to fertilizer-N was not affected. Teff yield increase with fertilizer-N application up to 92 kg ha-1 the economic optimum rate based on the yield response function for nitrogen fertilizer was 85.4 kg ha-1 to obtain maximum profit (86878.8 birr ha-1). Similarly, the optimum phosphorus fertilizer rate at the hill slope was 39.7 kg ha-1 to obtain a maximum profit of (96847.8 birr ha-1). But
there was not a profitable response at the midslope and foot slope positions. Therefore, for Habru district and similar agroecologies85.4 kg ha-1 N and 39.7 kg ha-1 P in hillslopes and only 85.4 N kg ha-1 for midslopes and foot slopes are expected to give the most profitable returns to fertilizer
applied for tef production.
 
Publisher Elsevier Sci Ltd
 
Date 2023-07-03
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights cc_attribution
 
Identifier http://oar.icrisat.org/12151/1/Heliyon_9_1-11_2023.pdf
Gedamu, S A and Aragaw, K S and Abush, H T and Agegnehu, G (2023) Response of Teff ((Eragrostis tef (zucc.) Trotter) to nitrogen and phosphorus applications on different landscapes in eastern Amhara. Heliyon (TSI), 9. 01-11. ISSN 2405-8440