Bottom soil characteristics of brackishwater ponds after a culture period
Journal Title: Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society - Year 2012, Vol 5, Issue 5
Abstract
Soil samples were obtained from two ponds used for the modified extensive culture of milkfish, Chanos chanos and three semi-intensive shrimp, Penaeus monodon ponds immediately after harvest. The ponds were used as experimental ponds that are located at a research institute in Central Philippines, and with a culture period of four months for both systems. Soil pH, potential acidity, available phosphorus and organic matter content were determined from the soil samples. The ponds from both culture systems had soil pH ranging from slightly acidic to slightly basic. The potential acidity in milkfish ponds ranged 18.4–28.97 meq H+per 100 g of soil, while it ranged 14.7–21.42 meq H+per 100 g of soil in the shrimp ponds. Available phosphorus was more or less similar in both culture systems. The mean organic matter content (%) in milkfish ponds was 2.62+0.4, while that in shrimp ponds was 1.90+0.6. These results are crucial in subsequent pond preparation activities because the levels of these different chemical parameters would determine the amount of inputs that are needed in the pond prior to the actual culture. Appropriate amounts of inputs, whether organic or inorganic, that are added during the pond preparation stage will significantly affect the pond performance during the culture period.
Authors and Affiliations
Christopher Caipang, Mara Fos, Ma. Shirley Golez
Keywords
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