Effects of nutrient omission and landscape positions on grain sorghum production in northern Ethiopia

Sebnie, W and Melak, E and Esubalew, T and Feyisa, T and Kendie, H and Agegnehu, G and Desta, G (2025) Effects of nutrient omission and landscape positions on grain sorghum production in northern Ethiopia. Agrosystems, Geosciences & Environment, 8 (2). pp. 1-12. ISSN 2639-6696

PDF - Published Version Available under License ["licenses_description_cc_attribution" not defined]. Download (1MB)

Abstract

Lowsoil fertility, inappropriate fertilizer application, and lowinput use are prominent factors contributing to low agricultural productivity in Ethiopia, where soil fertility status varies significantly across the landscape. Applying the correct rate, type, timing, and placement of fertilizers is essential for maximizing agricultural benefits and ensuring sustainable productivity. Addressing these issues is critical for promoting sustainable agricultural practices and improving food security. Therefore, the objective of the experiment was to identify the major yield-limiting soil nutrients for sorghum yield in northern Ethiopia. A randomized complete block design with three replicationswas used at each landscape positions. The nutrients evaluated in the study were nitrogen (N), phosphorus (P), sulfur (S), zinc (Zn), boron (B), and potassium (K). The treatment applied included control, recommended NP (RNP), NPSZnB, NPKSZnB, NPZnB, NPSB, NPSZn, 150% NPKSZnB, and 50% NPKSZnB. These treatments were implemented across each landscape position. The research findings indicated that the application of 150% All + K nutrients resulted in the highest grain and biomass yields across all landscape positions. When compared with the RNP treatment, there was no significant difference in yield at all slopes. Omitting S, Zn, B, and K did not significantly affect the grain and biomass yields, suggesting that these nutrients are not yield limiting for sorghum in the study area. These findings suggest that prioritizing N- and P-containing nutrients is essential for maximizing sorghum yield, thus contributing to sustainable agricultural practices and improved food security in the region.

Item Type:	Article
Divisions:	Research Program : East & Southern Africa
CRP:	UNSPECIFIED
Uncontrolled Keywords:	sorghum, Ethiopia, nutrient omission, landscape
Subjects:	Others > Plant Nutrition Mandate crops > Sorghum Others > Ethiopia
Depositing User:	Mr Nagaraju T
Date Deposited:	02 Apr 2025 04:26
Last Modified:	02 Apr 2025 04:26
URI:	http://oar.icrisat.org/id/eprint/13018
Official URL:	https://acsess.onlinelibrary.wiley.com/doi/full/10...
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	The authors express their deep gratitude and appreciation toward the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Amhara Agricultural Research Institute (ARARI), and Sekota Dryland Agricultural Research Center (SDARC) for the unwavering dedication and commitment demonstrated throughout the project’s execution, contributing significantly to its successful implementation and timely completion.
Links:	Google Scholar

View Statistics

Actions (login required)

View Item