Field Applied Nitrogen Fertilizer

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Nitrogen is essential for healthy plant growth and good yield. Straight nitrogen fertilizers are often the major source of this important nutrient.Nitrate forms of nitrogen are most swiftly absorbed by crops, which is why they are commonly used when a fast response is needed. In contrast, ammonium- and urea-based fertilizers need to be transformed by microbe activity in the soil before plants can absorb them. Therefore they are more commonly used where a more gradual uptake of nutrients is needed.

Nitrate forms of nitrogen are most swiftly absorbed by crops, which is why they are commonly used when a fast response is needed. In contrast, ammonium- and urea-based fertilizers need to be transformed by microbe activity in the soil before plants can absorb them. Therefore they are more commonly used where a more gradual uptake of nutrients is needed.

  • Calcium ammonium nitrate (CAN), is a mixture of AN and calcium/magnesium carbonate. It contains nitrogen that can be immediately absorbed by plants. Yara’s range of CAN products has nitrogen concentrations of 25 to 28 percent. CAN also contains 10 percent calcium (Ca), or lime, which helps to neutralize soil acidity.
  • Ammonium nitrate (AN) is a more concentrated source of nitrogen containing 33.5 percent to 34.5 percent N.  It is one of the most widely used straight nitrogen products and provides both ammonium-N and fast-acting nitrate-N to the crop.
  • Urea is the most concentrated solid nitrogen fertilizer available (46 percent N), and has become the world’s major source of nitrogen.
  • Urea ammonium nitrate solutions (UAN) contain 28 to 32 percent N and are used where distribution and application techniques suit liquid fertilizer use.
  • Ammonium sulfate (AS) has relatively low nitrogen content (21 percent N). It also contains 24 percent sulfur (S).

In addition to nitrogen fertilizers, we supply various composite fertilizer products. These supply several chemically combined major nutrients, most commonly nitrogen (N), phosphorus (P) and potassium (K). Some also contain secondary and micronutrients. Yara’s NPK products have consistent size and mass, which makes accurate spreading easier.

Blended products – mixtures of straight fertilizers – are also widely available. Yara products are often utilized in high-quality blends.

Yara also supplies field-grade calcium nitrate fertilizers for cash crops. These products deliver their 33 percent calcium content throughout the season to ensure high-quality fruit and vegetable production for growers and consumers.

Potassium nitrate can also be a valuable product, for example in late-season applications to fruit. The Yara potassium nitrate range is of high quality and easy to handle.

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