Feeding the world’s growing population
New Zealand’s reputation as a quality food producer is growing.
The Fertiliser Association of New Zealand promotes and encourages responsible and scientifically-based nutrient management.
fertiliser rate (kg/ha) = required nutrient rate (kg/ha) ÷ (% of the nutrient in the fertiliser ÷ 100)
For example, suppose we have a product containing 46% nitrogen and the desired nitrogen application is 50 kg N/ha.
fertiliser rate (kg/ha) = 50 kg N/ha ÷ (46% N ÷ 100) = 50 kg N/ha ÷ 0.46 N = 109 kg product/ha
In determining nutrient rates to apply, consider:
Any application of fertiliser should be made on the basis of required present and/or future production level. If calculated fertiliser application rates exceed crop uptake as suggested by nutrient budget results this should be recognised and managed accordingly through a nutrient management plan, to reduce losses and ensure production is not limited.