Chemically granulated fertilizer [photo] 

Chemically granulated

More even nutrient distribution for better results

Omnia’s chemically granulated products are fertilizers specifically manufactured at our unique granulation facility. Within these products, internationally known as compounds, each granule contains exactly the same amount and ratio of plant nutrients as is registered for the pro duct as such. Along with nitrogen, phosphorus and potassium, Omnia’s chemically granulated products contain several secondary and micro elements such as sulphur, calcium, magnesium and zinc - all in plant-available form.

Why is chemically granulated fertilizer better?

Omnia’s chemically granulated products contain ammonium nitrate, which is internationally accepted as the best source of nitrogen for crop nutrition. The nitrogen use efficiency of ammonium nitrate usually exceeds that of sources such as urea by more than 20% (Adriaanse, 2012), thanks to a reduction in volatilisation and ammonium toxicity.

Superior quality: Omnia’s chemically granulated fertilizer undergo various processes to ensure excellent quality. This means more evenly sized granules that won’t easily clump, break or cause dust. 

Why chemically granulated is the better choice in plant nutrition

Immediately plant-available nutrients: All the plant nutrients in Omnia’s chemically granulated products are immediately available to the crop. Raw materials that are typically used in bulk blends, such as urea and elemental sulphur, need to be converted in the soil to available forms. This may take a long time, inhibiting crop growth and yield.

No fillers: Fillers are usually added to bulk blends to decrease the concentration of nutrients, especially in low-concentration blends like 2:3:2(22). These fillers usually contain no nutrients and might be made up of materials which are insoluble or have a low solubility. In extreme cases, rock or gravel is even used. Omnia’s chemically granulated products contain no fillers as these products are made using a granulation process.

Even nutrient distribution: As all the nutrients are contained in every granule, the nutrients are evenly distributed. In bulk blends, every particle represents a different nutrient. When these are distributed over a field, uniform distribution cannot be guaranteed. When micronutrients are added to bulk blends in granular or pellet form, the small number of these granules in the blend create a considerable risk. Very few plants in the field will receive the micronutrient granule. And for those plants that do receive a granule, it will likely be at a toxic dose for a single plant.

No possibility of segregation: Omnia’s chemically granulated fertilizer will not segregate during bagging, transport or in the planter bin, as every granule contains all the registered plant nutrients in the same quantity and ratio. In bulk blended fertilizer, the different sizes and weights of each raw material particle can cause segregation during transport, handling and application (as shown in the image). This results in uneven distribution of granules and therefore the plants will not receive the correct amounts of nutrients. This, in turn, leads to nutrient deficiencies or toxicities, and ultimately yield loss.

In light of all the above advantages, and with our focus on reducing risk and increasing yield,  we have to ask the question: Can you really afford to use a cheaper alternative?


Adriaanse, F. G., 2012. Efficacy and application of nitrogen sources. Proceedings of the Technical Symposium of the Fertilizer Society of South Africa, Pretoria, 22 August 2012. Pages 4 to 19.