Potato nutrient requirements
Planting
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
Related articles
Potato nutritional summary
Potato agronomic principles
Potato nutrient requirements
Potato fertiliser application
Potato agronomy advice
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.