Nitrogen is an essential nutrient to fuel canopy growth, however in temperate climates, an excess supply of nitrogen at later stages of growth will keep the crop growing, delaying maturity and may reduce starch content, reducing processing potato crop quality.
Phosphate fertiliser use can influence starch quality. By increasing the tuber phosphate content, the viscosity of the gelatinised starch is also increased and the gelatinisation temperature decreased.
This data shows the relationship between tuber phosphate content and starch quality, as measured by viscosity.
Our collection of tools help you to make better nutrient decisions in making the right fertiliser choice and applying the right amount of nutrients at the right time and in the right place so that the crop yield and quality can be maximised whilst still keeping costs in check, avoiding over-fertilisation and protecting the environment.