Contamination of surface run-off water and soil in two horse paddocks.

The research explores how horse paddocks impact environmental contamination, by measuring the nutrient and micro-organism concentrations in run-off water and soil properties. The study was conducted in two paddocks, one maintained clean and the other not, under similar stocking conditions. Findings suggest that unchecked paddock use poses a risk to surface waters, more so after prolonged usage and summer rain.

Objectives and Methodology

• The study purposed to investigate how horse paddocks can lead to environmental contamination. This was spurred by the rising urban stabling of horses, hence the need to understand the potential environmental impacts.
• Researchers examined the concentration of nutrients and micro-organisms in the surface run-off waters. Additionally, they studied soil characteristics such as electrical conductivity, pH, and contents of phosphorous, potassium, and nitrates.
• Two open-stable paddocks were under observation; one was routinely cleaned, the other left uncleaned. These paddocks hosted horses at a stocking density of 37.5 animals per hectare.

Key Findings

• Among the most contaminated areas in both paddocks were feeding and drinking places. This implies that these areas significantly contribute to the overall contamination of paddocks.
• The study identified risk to surface waters due to high nutrient concentration. After seven months of use, the run-off water exhibited high levels of total phosphorus (3.4-18.8mg/l), phosphate (3.0-15.0mg/l), and total nitrogen (18.3-140.0mg/l).
• Across the seasons, run-off water contamination was also influenced by the climate. Summer rain, in particular, increased the flow of surface run-off, exacerbating contamination. This was especially noted from the feeding area of the uncleaned paddock that was free of stock.

Implications of Study

• The study’s findings highlight the potential environmental risks associated with horse paddocks. If left unchecked, contamination from these areas can harm surrounding surface waters, pose risks to aquatic life, and interfere with the natural nutrient balance.
• The research offers insight into the importance of routine cleaning and proper management of paddocks. This can help counter nutrient build-up and minimize the wider environmental impact.
• Finally, the findings also indicate the influence of climatic factors on paddock contamination, suggesting a need for a more comprehensive approach that takes into account seasonal changes.