When we harvest, we not only get produce, but we also deplete the soil of important nutrients.

substances! It is worth understanding how much nitrogen, phosphorus (P) and potassium (K) is taken out of our field together

with grain.

How to calculate nutrient removal from your crop?

Formula for calculation:

Nutrient removal = Yield (t/ha) x nutrient removal rate (kg/t)

Examples for different cultures:

• Corn

A yield of 9.4 tons per hectare provides 151 kg of nitrogen, 63 kg of phosphorus, and 46 kg of potassium.

• Wheat: For each ton – 27 kg of nitrogen, 14 kg of phosphorus and 8 kg of potassium.

Where can I find out the take-out rate?

These values ​​are usually given in the scientific literature, or can be obtained through
laboratory analyses of grain.

Importantly!

Information on nutrient removal alone is not sufficient to develop
fertilizer recommendations, as it does not take into account the ability of soils to retain and provide
nutrients.