Feasibility Studies and Irrigation Design for an Experimental Station in Southwestern Ghana

Research Area: Volume 4,Issue 6, Nov. 2015 Year: 2015
Type of Publication: Article Keywords: Feasibility, Irrigation Design, Rubber, Soil Analysis, Water Analysis, Sprinkler Irrigation
  • Oteng-Darko P.
  • Tetteh E. N.
  • AdjeiAsamoah E.
  • Ofori D.
  • Appiah Kofi R
Journal: IJEIR Volume: 4
Number: 6 Pages: 832-838
Month: November
A feasibility studies was conducted at an experimental station of the CSIR-Crops Research Institute to assess its suitability for the development of an irrigation facility earmarked for growing rubber seedlings. An initial reconnaissance survey was conducted after which soil and water samples were obtained for analysis. Results from the water analysis showed iron and turbidity values exceeding the WHO values for guideline. Mean pH ranged from 5.80 to 6.22, while the mean Electrical Conductivity (EC) values ranged from 25.40 to 48.80μS/cm. Total Dissolved Salts values ranged from 16.27 to 31.23mg/l. Total hardness and bicarbonates ranges from 1.60-14.20 mg/l and 6.60-12.70 mg/l respectively. The concentrations ranges for sodium, calcium and magnesium were 1.60-5.00, 1.70-5.20 and 0.20-1.80 mg/l. Soil analysis also showed satisfactory results for all components analysed. The mean pH ranged from 4.36-5.38 with EC also between 2.93 and4.03. Base saturation ranged between 68.66 and 85.26%. Carbon, total nitrogen and organic matter ranged from 0.57-1.41%, 0.04-0.13% and 0.98-2.43 respectively. Sand, clay and silt were in the ranges of 56.00-76-.60%, 8.04-18.04% and 11.40-32.10% respectively for a determined sandy loam texture at a moisture content ranging from 12.4-17.64%.It was recommended that adequate drainage with emphasis on surface drainage should be provided and salt and sodium build-up in the soil and water should be monitored regularly. The physical survey showed an undulating terrain not conducive for drip irrigation, hence a pressurize sprinkler irrigation system was recommended for the station.

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