DAP 90

Best suited as a starter fertiliser for crops that have a higher N to P requirement or on soils that have high existing phosphate levels.

• Nitrogen is always the nutrient in highest demand by plants, due to the greater content of nitrogen present on a dry weight basis in comparison to any other nutrient.
• Nitrogen is a primary component of amino acids which are the building blocks of proteins. Thus, by adding nitrogen to soil the protein content in plants is increased.
• Nitrogen is part of the chlorophyll molecule, and a part of numerous enzymes and coenzymes. Chlorophyll is responsible for photosynthesis, where sunlight is absorbed and stored in the plant as sugars and proteins.
• Therefore, nitrogen is an integral part of photosynthesis.
• Signs of nitrogen deficiency – reduced plant growth, yellowing of the leaf, early crop maturing.

• The most important role of phosphorus is the storage and transfer of energy that is generated through photosynthesis along with the metabolism of carbohydrates.
• Phosphorus is an essential compound of Adenosine Triphosphate (ADP), the energising component driving plant development.
• Phosphorus deficiency has a huge impact on plant growth and reproduction, reducing the plant processes noted below.
• Processes aided by phosphorus:
  • Large root growth
  • Early formation of plant shoots
  • Improved stalk and stem strength in crops
  • Improved fruit, vegetable, and grain quality
  • Seed formation
  • Resistance to moisture and colder temperatures