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.
Landcare – Col Gray
Completed March 2017
Soils were analysed for total F from plots from the Winchmore long-term fertiliser trial which had three rates of SSP applied annually i.e. Nil, 188 kg SSP ha-1 (188PA) or 376 kg SSP ha-1 (376PA) between 1952 to 2015. In addition, soils were also analysed for total F from samples collected down the soil profile at intervals to 100 cm from both the long-term fertiliser trial and also the dryland and 20% moisture treatments from the long-term irrigation trial at Winchmore.