Bags of fertiliser on a farm. Fertilisers contain the nutrients nitrogen (N), phosphorus (P) and potassium (K), which are essential to healthy plant growth. The quantities of each are given in the NPK format, here 25-5-5. This means that 25% of the fertiliser is nitrogen, 5% is phosphorus pentoxide and 5% is potassium oxide. Filmed in the UK. | |
Licence : | Droits gérés |
Crédit : | Science Photo Library / Davies, Andy |
Model Release : | Non requis |
Property release : | Non requis |
Durée : | 29 Secondes |
Aspect ratio : | 16/9 |
Restrictions : | - |