BioChar Soil Amendment
BioChar Soil Amendment
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Biochar is a carbon-rich substance produced by heating organic material in an oxygen-limited environment. It is used in agriculture as a soil amendment, to improve soil fertility and structure, retain moisture and nutrients, and reduce greenhouse gas emissions.
Our Biochar is made right here on our farm, using wood and brush of the various invasive bushes around the property. It is inoculated with castings from mealworms that are also from the farm.
The high surface area of biochar is one of its key mechanisms for improving soil fertility and health. The surface area refers to the total area of a material that is available for chemical reactions or interactions. The high surface area of biochar allows it to interact with a large number of soil particles and plant roots, which enhances its effectiveness as a soil additive.
- Nutrient retention: Biochar's high surface area helps to retain nutrients in the soil and make them available to plants over time. The high Cation Exchange Capacity (CEC) of biochar also helps to retain positively charged ions, such as calcium, magnesium, and potassium, which are important for plant growth.
- Microbial habitat: Biochar's high surface area provides a habitat for soil microbes, promoting a healthy soil ecosystem and increasing nutrient cycling through the actions of microbes.
- pH modification: Biochar's high surface area allows it to interact with soil particles and modify soil pH levels, making nutrients more available to plants and reducing the risk of nutrient toxicity.
- Soil structure improvement: Biochar improves soil structure by increasing porosity, water-holding capacity, and reducing soil compaction, which enhances root growth and nutrient uptake.
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Carbon sequestration: Biochar is a stable form of carbon that can persist in soil for hundreds to thousands of years, helping to mitigate climate change by reducing greenhouse gas emissions.
Home gardeners can use biochar in the following ways:
- Soil amendment: Mix biochar into the soil before planting or apply it as a top dressing. The recommended application rate of 5% by weight of soil, or up to 10% by volume.
- Composting: Incorporate biochar into compost to improve its quality and structure.
- Seed starting: Mix biochar into seed starting mix to provide seeds with a nutrient-rich environment.
- Potting mix: Mix biochar into potting mix to improve soil structure, retain moisture and nutrients, and promote healthy plant growth.
- Amendment for container plants: Biochar can be mixed into potting soil for container plants to improve soil health and fertility.