Product Analysis
Several research and demonstration trials have been conducted in Alaska using Alaska Fishbone Fertilizer as a fertilizer source. This material was provided by Mr. Bob Greig, Alaska Sea-Ag of Palmer. Mr. Greig is a local potato producer and cooperator in the aforementioned studies. Since 1991, bonemeal samples have been analyzed at the University of Alaska Fairbanks Agriculture and Forestry Experiment Station analytical laboratory located near Palmer, Alaska. The analyses included total nitrogen by micro-Kjeldahl, total phosphorus, potassium, calcium, magnesium, sodium, zinc, copper, manganese, iron, boron, and sulfur by nitric/perchloric digest, and dry matter determined at 105º C (Gavlak et.al., 1994, Plant, Soil, and Water Reference Methods for the Western Region, Western Region Extension Publication No. 125). The analytical results indicated that white cod bonemeals were reasonably consistent in nutrient content as shown below:
| Elements | Range | Elements | Range | ||
|---|---|---|---|---|---|
| N | % | 4.6 - 6.3 | Na | % | 0.6 - 1.0 |
| P | % | 7.5 - 10.5 | Zn | ppm | 54 - 82 |
| K | % | 0.2 - 0.7 | Mn | ppm | 30 - 67 |
| Ca | % | 14 - 25 | Fe | ppm | 49 - 289 |
| Mg | % | 0.3 - 0.4 | B | ppm | 2 - 11 |
| S | % | 0.6 - 0.8 | DM | % | 90 - 96 |
(This analysis was conducted on white cod bonemeal. Analysis figures vary depending on the fish used and the location the fish were caught.)
November 8, 1996
Raymond G. Gavlak, Ph.D.
Associate Professor and Agronomy Specialist
Alaska Cooperative Extension
of Alaska Fairbanks
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