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The Agricultural and Horticultural (including landscaping) markets for recycled organics represent the largest market share of
Bio-Recycle’s beneficial re-use programme.

Biosolids, food wastes and many other organic waste streams have all been successfully utilised in the production of food and fibre crops.

Biosolids however, represent the greatest component of these recycled organics, with over 1,000,000 tonnes being marketed by the company since its inception. Biosolids may be described as the residual component of wastewater treatment. Sometimes referred to as ‘Black Gold’, biosolids are gaining increasing respect worldwideas natural soil conditioners and fertilisers. The trend for this valuable growing media may be in part attributed to extensive and long running research, which has proven biosolids to be an excellent source of organic matter and plant nutrients. Bio-Recycle has been able to offer biosolids to the market place as dewatered cake direct from treatment works, or as a value-added product from the company’s N-Viro Soil™ plants or bulk composting operations.

The patented and licensed N-Viro technology is able to deodorise and pasteurise biosolids through the addition of alkaline reagents. The result, N-Viro Soil, offers farmers and horticulturists alike an organic liming alternative for acid soil amelioration. Composted biosolids have also been successful in providing an alternative for increasing soil organic matter.

Within the agricultural and horticultural markets, organics are recognised for returning nutrients to the soil. In particular, processed organics provide phosphorus and nitrogen in a slow release, or water insoluble form, only releasing these nutrients slowly during natural decomposition by soil microbes. Because of this slow release mechanism, many organics may be applied in large quantities without risk of plant burn, soil nutrient imbalance, or groundwater contamination.

A large proportion of Australian soils are very low in organic matter by world standards. Organics promote increased soil water retention, improved soil porosity and air exchange around the plant roots, and increased ability of soils to hold nutrients in a plant-available form. In addition, the carbon: nitrogen ratio of organics, especially that found within biosolids, is close to the 12:1 ratio considered optimal for healthy agricultural soils.

Biosolids have been utilised by Bio-Recycle within many agricultural and horticultural applications. These have included cotton, wheat, barley, canola, sorghum, millet, sugar cane, peanut, oat, pasture, lucerne, apple, nectarine, vineyard, macadamia, avocado, banana, watermelon, rockmelon, tomato, eggplant, squash, broccoli and cabbage production.

Bio-Recycle is committed to the recycling of organic residuals as part of a company policy of returning valuable nutrients and organic matter to Australia’s farming soils.

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