Effect of palm oil mill effluent conditioned by organic amendments on physicochemical properties of selected soils in aluu, port harcourt.
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Abstract
Palm Oil Mill Effluent (POME) is a high-strength organic waste that poses significant environmental risks, particularly in regions where untreated discharge into terrestrial ecosystems is common. This study evaluates the impact of POME amended with organic wastes on soil physicochemical properties. The pots each containing 10 kg of soil were laid out in a factorial fitted into a completely randomized design (CRD) - six treatments with six replications giving a total of 36 experimental units. Three seeds of Amaranthus Spp. were planted. Six treatments (poultry droppings, pig droppings, cow dung, poultry + cowdung + pig dropping, soil without POME and Soil with POME) were used, each applied at 20 tha-1. The soil samples were assessed for physicochemical properties after amendment. Physicochemical properties analyzed include pH, moisture content, hydraulic conductivity, organic carbon, total nitrogen and available phosphorus. There was a significant (P<0.05) increase in soil properties by the application of treatments to the raw POME. These parameters included soil pH (5.1–6.2), phosphorus (20.10–24.00 mg/kg), organic carbon (0.4–1.6%), hydraulic conductivity (1301.92–9598.45 mm/day), moisture content (18.50–51.15%). On average, POME amended with cow dung recorded the highest values among other treatments as follows: hydraulic conductivity = 9598.45, moisture content = 51.15%, pH = 6.2 and available phosphorus = 24.0 mg/kg. These values buttress the fact that the addition of organic waste to POME soil could improve soil quality and boost its fertility for agricultural productivity
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