Improve your nitrogen management with PurYield

Some crops—like corn, cereals, canola and potatoes—have higher input requirements. In such cases, tight application management is key to minimizing fertilizer loss and pollution. That’s where PurYield controlled-release nitrogen comes in.

Developed through a partnership between Sollio Agriculture and Pursell, this next-generation fertilizer is an excellent source of nitrogen for incorporated preplanting. When broadcast, it’s also less prone to leaching than conventional sources of nitrogen.

PurYield benefits

Combined with the 4Rs of fertilization (right source, right rate, right time, right place), this new technology can reduce the environmental impact of nitrogen fertilization while delivering both agronomic and economic benefits:

• Optimized nitrogen fertilization

• Higher return on investment

• Fewer applications in the field

• Less loss due to leaching

• Less greenhouse gas emissions

   

How controlled-release nitrogen works

PurYield consists of homogeneous urea granules covered with a controlled-release coating. This coating protects the nitrogen and releases it gradually as the soil temperature rises, in perfect sync with plant growth.

How the polymer-coating technology works

This technology delivers nutrients to the plants when they need them, reducing potential losses.

• In the first month, 30%–40% of the nitrogen is released if the soil temperature ranges from 12°C to 15°C.

• Peak release occurs when the soil temperature reaches 15°C to 20°C.

• On average with soil temperature around 22°C, 80%–90% of the nitrogen is released within 60–70 days.

PurYield is a highly concentrated nitrogen fertilizer (guaranteed analysis of 45–0–0) with a density of 77 kg/hL, making it compatible with conventional urea and ammonium sulphate. However, it should never be mixed with nitrate-based nitrogen.

PurYield profitability

In 2024, we studied the impact of PurYield on corn crop costs and yields at Sollio Agriculture’s research farm in Saint-Hyacinthe, Québec. That year, rainfall was 100 millimetres above average, with most of the rain falling in June and August.

Clay soil trial results

On May 21, 2024, the first batch of small-plot trials was planted in clay soil, marking the third consecutive year of corn cultivation in this soil.

As shown in the table, PurYield delivered the highest profitability and yields in the trial, both with the recommended 50-50 mix and the 100% PurYield treatment.The prices used in the tables are approximate and reflect the market rates at the time of writing:

• Corn: $250/tonne

• Urea: $1.67/kg N

• PurYield: $2.46/kg N

• 32-0-0: $2.09/kg N

   

Sandy soil trial results

On May 18, 2024, another batch of small-plot trials was planted in sandy soil, following a soybean crop.

As in the clay soil trial, PurYield resulted in the best crop profitability and yields.

The trials show that PurYield can be economically advantageous for corn crops, especially in a 50-50 mix with urea.

These promising results suggest that, given current conditions, PurYield could be a great way for Canadian farmers to make a profitable move towards sustainable agriculture.

In Québec, PurYield fertilizer is recognized as a nitrogen management tool under the Agricultural Climate Solutions program, which has been extended through 2025.

Talk to your agri-advisor to see how PurYield could work on your farm.