Article Number: DRJA15952196
Vol.4 (5), pp. 81-86, May 2016
Copyright © 2016
Author(s) retain the copyright of this article
Original Research Article
Depth Distribution of Available Micronutrients under Different Land-use Systems
A survey technique guided field sampling was carried out in land-use options at Abocho Dekina, Kogi State, Nigeria. Three land-use system: Forested, cultivated and fallow areas were located as the study site. At each site a profile pit was dug and soil samples were collected from genetic horizons for laboratory analyses. The obtained results indicated that the soil pH was extremely“slightly acid (4.28-6.99), organic carbon ranged from low to high especially in cultivated land-use systems while the cation exchange capacity was low to medium (2.4-7.2 cmol(+)kg-1). The current status of copper, zinc, iron and manganese varied from 0.34 to 0.61, 0.30 to 0.44, 17.58 to 33.91 and 23.95 to 44.45 mgkg-1, respectively. Similarly, the Zn level in all the land-use options was rated low while Cu, Fe, and Mn contents were rated medium to high. The simple linear correlation showed strong positive significant relation between Zn and OC; Fe and clay content whereas negative significant correlation was exhibited in Zn, Cu and clay; Mn and sand fraction. The crops will benefit from supplementary application of these micronutrients for maximum productivity. Fe and Mn values were œhigh and above the critical limits for arable crop production in all the horizons across the land-use system. The soils will not require supplementary application of Fe and Mn.
Key words: Abocho, land-use, Micronutrients,soil fertility.
Manuscript reviewed by:
1. Prof. Dr. Sami R. AL-Zubaydi,University of Duhok
Area of specialization:Plant Physiology
2. Dr.Ibrahim A.K, FEDERAL UNIVERSITY KASHERE
Area of specialization:SOIL FERTILITY
3. Dr. Achalu Chimdi, Achalu chimdi POBox 395, Wollega University, Nekemte, Ethiopia
Area of specialization:Soil Scientist ( Soil Chemistry)