phosphorous-containing fertilizers

Following a developing trend around the country, the Massachusetts Department of Agriculture (DAR) recently promulgated regulations restricting how fertilizers containing phosphorous, nitrogen or potassium may be applied.  The goal of these regulations is to reduce nutrient loading to waterbodies, which can lead to eutrophication and other negative water quality impacts.

The regulations, promulgated at 330 CMR 31.00, were authorized by Chapter 262 of the Acts of 2012 (An Act Relative to the Regulation of Plant Nutrients).  While restricting both, the regulations distinguish between agricultural and non-agricultural uses of fertilizers.  For non-agriculture fertilizer uses, fertilizers containing more than 0.67% phosphate by weight (excluding compost and organic fertilizers) are restricted in various ways, including:
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