Other factors associated with herd breakdowns include being a dairy farm and various farming practices such as operating over multiple premises, the spreading of fertilizers and the area of land farmed [ 7, 16, 19, 20, 25].
However, the handling and spreading of these fertilizers may pose an agronomic and environmental risk, not only because of leakage of nitrate to ground waters but also because of gaseous losses of NH3 (Asman 1992).
Terrestrial plants can also demonstrate elevated δN values as a result of natural environmental conditions such as salinity and aridity or anthropogenic factors such as the spreading of manure as fertilizer (Bogaard et al., 2007; Fraser et al., 2011).
Animal waste handling practices vary considerably between farms, but generally include "land application," the spreading of waste on the soil surface as a fertilizer, which can result in contamination of soil and surface or ground water.
For best results, gently push or dig some of the cover into the top layer of the soil after spreading the fertilizer and mulch around the plant's base.
Water the plants thoroughly after spreading the fertilizer.
Water the lantana right after spreading the fertilizer to help wash it down to the roots.
Another approach, ocean fertilization, would try to stimulate blooms of phytoplankton in the open ocean by spreading fertilizer across wide swaths of water.
This study was aimed to improve the spreading performance and fertilizer distribution uniformity of an independently developed centrifugal variable-rate fertilizer applicator.
