Plant Nutrition

Phosphorus Nutrient Info

Phosphorus - Quick Facts

  • Phosphorus is present in every living cell, both plant and animal.
  • Helps with the transformation of solar energy into chemical energy, proper plant maturation, and stress mitigation.
  • Form used by plants: H2PO4- (when soil pH <7) and HPO4-2 (when soil pH>7)
  • Phosphorus availability is critical during the early growth stages to ensure a quick and healthy start.


Phosphorus - Role of Nutrient

  • Stimulates early season growth.
  • Grows deeper and stronger roots.
  • Hastens plant maturity and promotes seed production.
  • Phosphorus functions as one of the main promoters of photosynthesis, nutrient transport, and energy transfer via energy-rich linkages (ATP).
  • Phosphorus is involved in the formation of all oils, sugars and starches, and encourages early plant growth for longer growing seasons.
  • Phosphorus is utilized by plants to form nucleic acids, which regulates protein synthesis.


Phosphorus - Nutrient in Soil

  • Low soil pH (< 6.0), P is generally in an unavailable form because of reactions with soluble iron, aluminum, manganese, or their hydroxides.
  • High soil pH (> 7.0), phosphorus fixation occurs thus making it unavailable for plant uptake.

Phosphorus - Deficiency Symptons

  • Slow growth and stunted plants
  • Abnormal purplish colouration of foliage starting from older leaves
  • Delayed maturity
  • Poor grain, fruit and seed development
  • Fruits and old leaves drop prematurely

Phosphorus - Factors Affecting Deficiency

  • Cold soil temperature, wet soils reduce the supply or conversion of available or labile P into the soil solution.
  • Low soil pH (< 6) and high soil pH (>7.2) reduce the availability of P to the plant.
  • Higher available Fe and Ca in soil can limit P availability.
  • Excessive phosphorus fertilizer can aggravate iron and zinc deficiencies and increase the soil salt content.
  • Nitrogen fertilization may increase P concentration in plants by increasing root growth and by decreaing soil pH as a result of the absorption of ammonium (NH4+) and thus increasing the solubility of fertilizer P.

R3 Agronomic Platform

R3 Lifecycle: Roots > Reproduce > Ripen

Roots – The vegetative stage looks to develop vigorous, healthy roots to maximize nutrient acquisition from the soil. The end result is a healthy root rhizosphere.

Reproduce – Supply the essential nutrients at reproduction to help the plant maximize pollen viability, flowering, pollination, seed set and fruit development.

Ripen – Late season nutrition is vital to optimize the nutrient density and quality of the crop.

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