Potato nutrient requirements

Potato nutrient requirements vary depending on the crop growth stage. Find out which nutrients are most important at different growth stages.


Nitrogen and Potassium - early growth and dry matter
Phosphate - more tubers, growth and dry matter
Magnesium - for plant development
Zinc and Manganese - Powdery and Common Scab control
Sulphur - Common and Powdery Scab and tuber numbers

Before tuber initiation (Hook stage)

Phosphate - more tubers, stronger growth

Tuber initiation

Phosphate and Magnesium - bigger tubers
Zinc and Manganese – skin finish
Calcium (+/- Boron) – good skin quality, internal rust spot reduction, stress tolerance – drought/heat

Flowering and bulking

Nitrogen, Phosphate and Magnesium - maintain tuber growth
Calcium – improves skin finish and reduces disease impact

Recommended Yara fertilisers for potatoes

How to make better informed nutrient decisions

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.