1Department of Horticulture and Crop Production, School of Agriculture and Technology, University of Energy and Natural Resources, Sunyani, P.O. Box 214, Sunyani, Ghana
2Department of Crop and Soil Sciences, Faculty of Agriculture, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
*Corresponding Author: Remember Roger Adjei, Department of Horticulture and Crop Production, School of Agriculture and Technology, University of Energy and Natural Resources, Sunyani, P.O. Box 214, Sunyani, Ghana, Email: remember.adjei@uenr.edu.gh
Online published on 11 July, 2023.
Poor soil fertility management in Ghana has necessitated the need to investigate the appropriate source of nitrogen which enhances nitrogen use efficiency and improves maize productivity under rainfed condition.
The experiment consisted of five treatments; control (no fertilizer), NPK 15-15-15 (90 kg N ha−1), urea (90 kg N ha−1), poultry manure (4.2 tons ha−1) and combination of NPK 15-15-15 and poultry manure (½NPK 15-15-15 + ½ poultry manure). Randomized complete block design was the experimental design used for the experiment with three replications.
The greatest grain yield (5,551 kg ha−1) and biomass yield (14,296 kg ha−1) for the major rainy season were recorded by the combined application of NPK 15-15-15 and Poultry manure treatment, while the highest grain yield (3,507 kg ha−1) and biomass yield (7,976 kg ha−1) was recorded by NPK 15-15-15 treatment during the minor rainy season.
Fertilizers, Maize productivity, Nitrogen sources, Nitrogen use efficiency, Rainfed
