Agriculture is the practice of cultivating soil, producing crops and raising livestock. We are all familiar with traditional agricultural crops (e.g., wheat) and livestock (e.g., cattle), but agriculture also includes flower farming, medicinal plant farming and fish farming.
Agricultural products are essential for our survival. They are a large part of Alberta’s economy and are an important contribution to the global food chain.
The inputs that are used for agriculture (e.g., feed and fertilizers) and the wastes that are produced (e.g., manure) are all parts of the food production cycle. However, if these inputs or wastes enter the broader water system they may have negative impacts, such as eutrophication of water bodies and damage to aquatic ecosystems. Sources include:
Learn more about fertilizer and manure on the Nutrients fact page.
In addition to inputs and wastes, agricultural activities themselves can lead to water quality issues. Livestock drinking water from streams, for example, can damage stream banks, affecting both bank stability and vegetation. As well, soil blowing off of tilled fields can lead to increased sediment in streams. Sediment in streams can damage the eyes and gills of fish and aquatic insects; reduce sunlight in the water; and smother plants, fish eggs and invertebrates.
There are numerous Best Management Practices (BMPs) that farmers use to minimize their impact on water quality. Alberta’s Environmental Farm Plan is a voluntary, individual self-assessment tool for farmers to identify their environmental risks and create mitigation plans, which often include BMPs. Some BMPs and actions that agricultural producers and individuals can take include:
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