Corn has a high requirement of nitrogen, phosphorus, potassium, calcium, magnesium, iron and manganese. Corn is a C-4 annual crop, which means that it has a high light-use efficiency.

Read more

Onion requires potassium at rates equal to nitrogen, but calcium is required at considerably higher rates. High nutrient availability is important during bulb-formation; in this phase a high K:N ratio is required.

Read more

Potato has an elevated nitrogen consumption and even higher potassium requirements. Sufficient calcium applications enhance tubers' storability. Optimal soil-pH is between 5 and 6.

Read more

Sugar-beet needs high levels of nitrogen and even much higher levels of potassium. Magnesium and iron supply should be high too. Boron deficiency causes beet hollowness.

Read more