Wherever possible, fertilisers should be stored at least 10 meters away from a watercourse or field drain and well away (e.g. 50 meters) from a borehole, well etc. The correct use of spreading machines and proper disposal of spillage and bags will prevent run-off. Yara recommendations include advice on when to apply the fertiliser to maximize the plants uptake, thus reducing losses to the environment.
The bags protect against humidity and mechanical stresses. They are made of polyethylene (PE), polypropylene (PP), paper or combinations of these materials are available (valve bags, fully “open” bags for melt sealing and stitching). Bags are made after given specifications:
Bags should be emptied by shaking to remove as much of the content as possible. Empty bags may be disposed of as non-hazardous material or returned for recycling. In tests, bags emptied in this manner show only traces of residues and are considered non-hazardous. There are national guidelines that need to be followed regarding the recycling of packaging materials. Typical points to consider are:
Look for the appropriate symbols when recycling:
2: HDPE: High-Density Polyethylene
HDPE is slightly waxy and semi-rigid. It does not crack. It floats in water.
4: LDPE: Low-Density Polyethylene
LDPE is used in flexible bags. Recycled LDPE is often used to make grocery bags.
5: PP: Polypropylene
PP stretches into filaments and emits a chemical smell when burned.
Defective fertiliser must be disposed in a secure matter as well. Even if it cannot be suitable for distribution with fertiliser application, it still contains valuable nutrients. Therefore, make sure that it is collected and used in the recommended way. If it cannot be used it should be treated as hazardous waste.