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LOW ENVIRONMENTAL IMPACT BEGINS WITH SUSTÅNE COMPOST BASED NATURAL FERTILIZERS

Suståne products have been demonstrated to provide a slow, efficient release of nitrogen to plant life without loss to or immobilization in the soil environment. Minimal nitrate leaching, optimum plant uptake.

With ongoing commitment to protecting the environment, golf course architects, groundskeepers, professional growers and regulatory authorities evaluate which inputs and management techniques will provide the tools and systems for optimum soil and plant health conditions while demonstrating the lowest possible negative impact on the surrounding natural resources.

“A negative effect of the use of highly soluble fertilizer materials is that all of the N that is applied is rapidly available and is easily depleted. High initial application rates encourage rapid plant growth and nutrient uptake, while unincorporated soil solution N is easily leached from the profile. Without reapplication or N release from mineralized organic matter in the soil, available N levels rapidly drop to deficiency levels and plant growth on the site declines. Proper amendment of drastically disturbed, low nutrient substrates, therefore, requires amendments that are large enough to support long term plant growth but which have low N release rates that correspond to uptake by perennial species and do not promote weedy invasion.” [Excerpted from Nitrogen Release Rates From Soil Amendment Materials, 1998 V.P. Claasen and M.P. Hogan U Cal Davis – Caltrans and US DOT Federal Highway Administration,]

Grow-in with Suståne at Kragero Golf Course, Norway; above chart - U of Connecticut Guillard & Kelly 96-99

Nitrogen Release Rates from Soil Amendment Materials 1998 – U of California, Davis / Caltrans / US DOT FHA

Suståne’s Nitrogen release curve has a rapid initial increase and a flatter monthly release rate than some of the other organics. Cumulative N release is 55% at 130 days incubation (30° C.) and 57.1% at 334 days. The N release at 4 months is 0.63% per month and at 11 months the rate is 0.2% per month.

The addition of organic substrates will improve other soil remediation characteristics including soil pH, soil physical structure, water release characteristics, mulch protection, biological inoculation, and other (non-N) nutrient requirements. Further, the addition of organic substrates will increase microbial activity, which is a major factor in the generation of water-stable aggregates.

Nitrogen Release Rates 1998, V.P. Claasen and M.P. Hogan U Cal Davis, Caltrans

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