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The effects of lake Ol’Bolossat’s sediments application on soil-chemical characteristics and productivity of swiss chard (<i>Beta vulgaris</i> L.)
Abstract
Sediments dredged from the lakes have emerged as successful soil amendment solutions, especially in alleviating soil fertility problems in poor soils. This study aimed to assess the effect of sediments from lake Ol’Bolossat on soil quality and the growth and yield of Swiss chard (Beta vulgaris L.). A pot experiment was carried out in January-April and July-October 2020 in a polyethylene greenhouse using a completely randomized design at the Jomo Kenyatta University of Agriculture and Technology. To achieve the study's objective, Swiss chard (Ford hook giant variety) was grown in pots, and five treatments were applied; (T1)-sediments from lake depth of 0-30 cm + soil, (T2)-sediments from lake depth of 30-60 cm + soil, (T3)-sediments from lake depth of 60-90 cm + soil, (T4)-inorganic fertilizer (NPK 150 kg/acre) + soil, (T5)-soil with no lake sediments or inorganic fertilizers, which acted as the control experiment. The sediments were mixed with soil at a ratio of 1:4.
