Mineral Composition of Some Important Indigenous Savanna Forage Shrub Species in Ghana

Ziblim Abukari Imoro, Danquah Emmanuel, Ammal Abukari


This study compared the forage quality of Cajanus cajan, Stylosanthes mucronata, Tephrosia purpurea, and Securinega virosa in the savanna ecological zone of Ghana. The shrubs were cultivated using Randomized Complete Block Design (RCBD) and their growth were monitored. Leaf samples were hand-harvested at 7, 10, and 13 weeks after establishment, air-dried, pulverised, and used for laboratory analysis. Nitrogen (N), Phosphorus (P), Potassium (K), Calcium (Ca), and Magnesium (Mg) were determined. N, P, K, Ca and Mg contents among the shrubs ranged from 0.74 - 0.79%, 1.32 - 1.99%, 7.63 - 10.09%, 2.22 - 3.06 and 1.08 - 1.38%, respectively. Stylosanthes mucronata was significantly lowest in both P (1.318%) and K (7.63%), whilst Securinega virosa was significantly highest in K (10.09%). Among the three maturity levels, N, P, K, Ca and Mg contents ranged from 0.31 – 1.05%, 1.51 - 1.93%, 7.46 - 10.43%, 2.63 - 2.67% and 1.28 - 1.30%, respectively. Except for P, which was significantly lowest at 10 weeks after establishment (WAE), N and K were significantly highest at 7 WAE and lowest at 10 and 13 WAE, respectively. It was observed that the shrub species and maturity levels influence the nutrient content of forage shrubs.


Forage;Maturity; Harvest;Nutrients; Indigenous; Shrub

Full Text:


DOI: https://doi.org/10.24925/turjaf.v10i6.1034-1038.4819

 Creative Commons License
This work is licensed under Creative Commons Attribution 4.0 International License

ISSN: 2148-127X

Turkish JAF Sci.Tech.

Turkish Journal of Agriculture - Food Science and Technology (TURJAF) is indexed by the following national and international scientific indexing services:





















Our Journals

Turkish Journal of Agriculture - Food Science and Technology

International Journal of Poultry - Ornamental Birds Science and Technology

Turkish Research Journal of Academic Social Science

Turkish Research Journal of Academic Technical Science

Turkish Research Journal of Academic Health and Medical Sciences

Our congresses

International Anatolian Agriculture, Food, Environment and Biology Congress (TARGID)

International Congress of the Turkish Journal of Agriculture - Food Science and Technology (TURJAF)

Our Youtube Channel


Our Books

Our Scientific Books

About Us

The Turkish Science and Technology Publishing (TURSTEP) is an online and open-access platform to publish recent research and articles of scholars worldwide. Founded in 2013 and based in Turkey, the TURSTEP as a platform for academics, educators, scholars, and students from Turkey and around the world, to connect with one another. The TURSTEP disseminates research that is proven or predicted to be of significant influence for the general public.


Contact Us

Please send all inquiries to the email:


Business Adress

Eğriköprü mh. Pilot Kaya İstektepe Cad. 9/1 BLOK Daire 7, 58050 Merkaz/Sivas, Turkey