What Does Biosolids Land Application Tell Us?



Biosolids land application is beneficial for everyone—the wastewater treatment facility where the matter goes through, the farmers who will use it for their crops, and the consumers who will benefit from the nutrient rich food grown from farmlands that used organic soil. Biosolids is applied to soil to supply it with much-needed nutrients, as well as to replenish soil organic matter. This process is called land application.

Biosolids is safe to be used on all kinds of land, forests, rangelands, and even on disturbed lands that are up for reclamation.

Improves soil properties

One of the reasons why biosolids is being applied on soil, even on agricultural soil, is because it’s almost a never-ending supply of nutrients like potassium and phosphorus. These nutrients are needed by the soil for it to be beneficial for crops and other plants. It also improves the soil’s properties such as texture and water holding capacity. The land application of biosolids makes it favorable for root growth and also increases the drought tolerance of vegetation.

Supplies essential nutrients

Aside from potassium and phosphorus, the application of biosolids on land also gives out essential nutrients that are needed to stimulate plant growth. Among these are nitrogen, nickel, zinc, and copper. Most farmers find it hard to source these nutrient-rich minerals, but biosolids is natural carrier of such nutrients.

Acts as alternative for chemical fertilizers

Probably the most important function of biosolids land application is that it is a viable alternative for chemical fertilizers. Instead of putting everyone’s health at risk through the use of commercial-grade fertilizers, whose ingredients we do not know exactly, farmers can now use biosolids to ensure the protection and the safety of the crops. Instead of consumers relying on fertilizers to source important nutrients from, why won’t they depend on organic soil born from the land application of biosolids.

Why are nutrients in organic forms more effective than those from inorganic forms (chemical fertilizers)? Nutrients in organic forms are less water soluble. They can survive the different environment produced by the plant and the soil. This is an important factor because it means that biosolids is less likely to leach into groundwater or run off into surface waters. The application of biosolids makes sure that the nutrients will remain in the organic soil, and that the crops and plants planted in it will be the beneficiaries. This alone should be reason enough for farmers to use it instead of chemical fertilizers.

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