Miracle-Gro Water Soluble Tomato Plant Food 18-18-21

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Miracle-Gro Water Soluble Tomato Plant Food 18-18-21
Heavy metals (ppm)
OregonArsenic: 13 ppm
 Cadmium:< 5 ppm
 Mercury:< 0.2 ppm
 Nickel:< 5 ppm
 Lead: 8.3 ppm
WashingtonArsenic: 0.39 ppm
 Cadmium:< 1 ppm
 Cobalt:< 5 ppm
 Mercury:< 0.02 ppm
 Molybdenum: 5.3 ppm
 Nickel:< 2.5 ppm
 Lead:< 5 ppm
 Selenium:< 0.5 ppm
 Zinc: 676 ppm
Sources: ODA[1], WSDA[2]
retrieved 4 May 2017

Miracle-Gro Water Soluble Tomato Plant Food 18-18-21 is a NPK fertilizer from The Scotts Miracle-Gro Company. The fertilizer contains 18% nitrogen (N), 18% phosphorus (P2O5), and 21% potassium (K2O). Heavy metal analyses of the product reported to Oregon and Washington State can be found in the info box on this page. These analyses show the quantities of heavy metals, in parts per million (ppm), of arsenic (As), cadmium (Cd), cobalt (Co), lead (Pb), mercury (Hg), molybdenum (Mo), nickel (Ni), selenium (Se) and zinc (Zn) present in a sample of the product. Oregon does not report concentrations of cobalt, molybdenum, selenium or zinc.

The fertilizer heavy metals analyses information for Miracle-Gro Water Soluble Tomato Plant Food 18-18-21 is from the Oregon Department of Agriculture and the Washington State Department of Agriculture. The information on WikiFootprints was last obtained from the agency websites on 4 May 2017. WikiFootprints is not an official source of this information and may not represent the most recent analysis of the product. Official data can be obtained from the Oregon Department of Agriculture Fertilizer Program and the Washington State Department of Agriculture Fertilizer Product Database.[1][2]



Usage

Fertilizers and other products used to increase soil fertility can contain significant amounts of heavy metals, such as arsenic, cadmium, lead, mercury, and nickel. NPK fertilizers are often used on a regular basis, so there can be a cumulative effect on heavy metal concentrations in the soil. Several state departments of agriculture regulate the concentrations of heavy metals, in agricultural products, to protect human health and natural resources from toxicity.

The Oregon Department of Agriculture sets required lower limits of detection for each heavy metal concentration measured. At the minimum laboratories must be able to detect concentrations of 10.0 ppm arsenic, 5.0 ppm cadmium, 5.0 ppm lead, 0.20 ppm mercury, and 5.0 ppm nickel.[3] The concentrations of cadmium, mercury and nickel, reported to Oregon, are at or below the maximum lower limit of detection. The concentration reported to Oregon of arsenic is 13 ppm and lead is 8.3 ppm.[1]


See also

  • NPK fertilizers - comparison of heavy metal concentrations in fertilizers that provide nitrogen, phosphorus, and potassium
  • Fertilizers - comparison of heavy metal concentrations in fertilizers

References[edit]

  1. 1.0 1.1 1.2 Detail information Registered Fertilizer, Ag Mineral, Ag Amendment, and Lime Products. Oregon Department of Agriculture. Web.
  2. 2.0 2.1 Fertilizer Product Database. Washington State Department of Agriculture. Web.
  3. How Do I Register a Fertilizer Product in Oregon?. Oregon Department of Agriculture. Web. 6 May 2017