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CHARACTERIZATION AND FERTILITY CAPABILITY CLASSIFICATION OF SOILS ALONG RIVER KADUNA WATERSHED, NORTH-WESTERN NIGERIA

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ABSTRACT

CHARACTERIZATION AND FERTILITY CAPABILITY CLASSIFICATION OF SOILS ALONG RIVER KADUNA WATERSHED, NORTH-WESTERN NIGERIA

Journal: Plant Physiology and Soil Chemistry

Obasi S.N., Obasi C.C., Alhassan G.A., Alawode Y.O., Nnabuihe E.C

This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

DOI: 10.26480/ppsc.01.2024.26.34

This research work was carried out along river Kaduna watershed and aimed at characterizing some soil properties as well as carrying out a fertility capability classification for some arable crops grown in the location. A total of six profile pits were dug and characterized. Parameters employed in FCC study were Type, Subtrata type and Condition modifiers. The studied soils were dominated by soil texture class of silt clay loam. Almost all studied soils (pits 1, 2, 3, 5 and 6) had their textures ranged from Silt clay loam at the top horizons to silty loam or silt clay down the horizons. The only exception to this was the pit 4 which was dominated with silty loam at the top and its lower horizon. Soil pH was moderately acidic (pH > 5.0< 6.0), with the exception observed only in Pit 4 where pH was more acidic; 4.92 as measured in CaCl2. Classification under condition modifiers revealed that all studied locations except Pit 1 had a limitation of dryness (d) in all investigated locations suggesting a situation in which soils experience dryness > 60 consecutive days/year within 20 cm to 60 cm depth. Effective Cation Exchange Capacity (ECEC) (e) was not a limitation in the studied soils except in Pit 4 as all other ECEC values were higher than 6 Cmol.kg – 1 soil below which suggests serious leaching of exchangeable cations. The studied soils had a major challenge of low nutrient reserve, (exchangeable K < 0.20 c mole kg -1 soil). Application of organic substances rich in exchangeable basic cations especially K should be adopted by farmers around river Kaduna watershed. Also, the use of river Kaduna for irrigation purposes should be maximized to enhance dry season farming since rainfall duration is short in North Western Nigeria.
Pages 26-34
Year 2024
Issue 1
Volume 4