Biuret

An undesirable chemical compound produced from the manufacture of, and contained as an impurity within, Urea fertiliser. Biuret, at relatively high levels, can be phytotoxic to plants, may reduce seed germination and may also extend the time for leaf emergence. Routine use of urea products might be an issue to turfgrass plants where they are primarily grown on high sand-based rootzones, therefore, having a range of nutritional-fertiliser inputs may be desirable in such situations. Fertiliser manufacturing will typically be able to produce urea products with less than 0.5% concentration of biuret, this being a rate at which turfgrass plants can tolerate.