Global Advanced Research Journal of Agricultural Science (GARJAS) ISSN: 2315-5094
September 2017 Vol. 6(9): pp. 293-305
Copyright © 2017 Global Advanced Research Journals

 

Full Length Research Paper

Physicochemical characteristics of the Kalimbeza Rice project soil, Katima Mulilo Namibia

1J. Abah*, 1P. Mashebe, 2V. Hepute,  2J.S. Valombola

 

1Department of Mathematics, Science and Sport Education, Faculty of Education, University of Namibia, Katima Mulilo Campus, Private Bag, 1096, Katima Mulilo Namibia

2Ministry of Agriculture, Water and Forestry, Kalimbeza Research Station, Private Bag, 5005, Katima Mulilo, Namibia

Email: aalharbi@jazanu.edu.sa

Accepted 22 September, 2017

 

Abstract

As part of efforts towards improving the productive capacity of the Kalimbeza rice project soil, the main objective of this study was to establish the physicochemical characteristics of the rice soil. During the 2014 to 2015 cropping season, a total of 68 soil samples (consisting of 34 each) were randomly collected within top (0-15cm) and sub (15- 30cm) in the pre- and post-rice cultivation soil for laboratory analysis. The laboratory results revealed that the rice soil has a predominant sandy loam textural characteristic and moderate acidity with average pH levels of 5.47 (pre-cultivation) and 5.39 (post-cultivation). The mean levels of electrical conductivity of the pre- and post-rice cultivation soil were 61.60dS/m and 58.50dS/m respectively and these suggest saline soils characteristic. Very low mean levels of nitrogen (0.1% and 0.09%), phosphorus (1.30ppm and 3.68ppm), potassium (35.60ppm and 45.50ppm) and organic carbon (0.81% and 0.72%) were recorded in the pre- and post-rice cultivation soil analyses respectively. High mean level of cation exchange capacity (12.26meq/100g) was recorded in the pre-rice cultivation soil analysis while a low mean level of 7.37meq/100g was recorded in the post-rice cultivation soil. Under rice mono-cropping system such as currently practiced at the Kalimbeza rice project, the observed physicochemical properties of the rice project soil require proper soil management strategy in order to enhance its long-term productivity. 

Keywords:  Rice productivity, soil properties, pre- and post-rice cultivation, Kalimbeza rice project. 

 


 

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