Full-text resources of PSJD and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl
Preferences help
Polish version English version Language
enabled [disable] Abstract
Number of results

Results found: 2

Number of results on page
first rewind previous Page / 1 next fast forward last

Search results

help Sort By:

help Limit search:
first rewind previous Page / 1 next fast forward last
1
Publication available in full text mode
Content available

Hydraulic Properties of Soils of Akani Esuk Orok in Calabar, Cross River State, Nigeria

100%
Akpa E. A., Eyong M. O., Afu S. M., Olim D. M.
World News of Natural Sciences
|
2019
|
vol. 22
102-109
EN
The study highlights the hydraulic properties of Akani Esuk Orok in Calabar, Cross River State, Nigeria. Twenty soil samples were collected from Akani Esuk in Calabar on a grid measuring 6 m X 6 m at a distance of 2 m apart to determine the hydraulic conductivity and to assess its influence on bulk density, particle density, total porosity and texture. The mean value of hydraulic conductivity was 14. 91cmhr-1, bulk density1.3 g cm-3, particle density 2.5 g cm-3, total porosity 47.6 %, sand content 80.1 %, silt content 8.4 % and clay content 11.5 %. The texture of the experimental plot was loamy sand. The mean values of pH were 5.4; effective cation exchange capacity (ECEC) was 63.9 cmol kg-1.These values, which are rated medium for the soils are probably responsible for the luxuriant growth of several crops cultivated in the area. The mean base saturation of the soils was 58.3 %. The potassium level of the study area was low, a mean value of 0.11 2 mg kg-1. Though the soils were strongly acidic in reaction and the fertility status was considered low, medium and high taking consideration values of organic carbon, total nitrogen, ECEC and base saturation. Hence, the fertility should be maintained by planting Calopogonium municoides, Centrosema pubescens and adoption of appropriate cultural practices.
2
Publication available in full text mode
Content available

Morphological and Physicochemical Properties of Basaltic Soils on a Toposequence in Ikom, South Eastern Nigeria

88%
Olim D. M., Afu S. M., Ediene V. F., Uko I. E., Akpa E. A.
World News of Natural Sciences
|
2019
|
vol. 22
84-92
EN
Three profile pits were sunk along a toposequence of basaltic soils in Ikom, Cross River State to determine their morphological and physicochemical properties. The profile pits were morphologically described and thirteen (13) soil samples were collected from different horizons of the profiles for physicochemical analysis. Morphologically, the soils were deep and well drained with no concretions. The colour of the surface soils varied between dark reddish gray (5YR4/2) and dark brown (7.5YR 3/2) to dark reddish brown (5YR 3/4), while that of the subsurface varied between red (2.5YR 4/6) to reddish brown (2.5YR 4/4). The soils had sub-angular blocky structure of different grades and classes with predominantly clayey texture in the Ap horizons and very gravelly clayey texture in the Crtg horizons. The chemical analysis revealed that exchangeable Ca2+ was the most dominant cation amongst the exchangeable bases. The soils were low in total nitrogen, organic carbon, available phosphorus and very high in base saturation. The study showed that the soils are moderately fertile and as such, a lot has to be done to improve their fertility status through the application of organic and inorganic fertilizers with good management practices such as mulching with crop residue after harvest, sowing of crops at low density per hectare, conservative tillage, strip cropping, crop rotation and shifting cultivation to ensure sustainable productivity.
first rewind previous Page / 1 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.