Plant Nutrition

Boron Nutrient Info

Boron - Quick Facts

  • Boron is essential for the plant growth and cell development.
  • Essential for seed and fruit development.
  • Improves stability and function of cell wall membranes.
  • Promotes synthesis of structural carbohydrates in the cell wall.
  • Flowering and nodule formation depend on adequate Boron.
  • Boron plays roles in formation of sugar complexes for translocation within plants, and in the formation of proteins.
  • Form used by plants: H3BO3, B(OH) -4 (at high pH)


Boron - Role of Nutrient

  • Essential for elongation of pollen tubes
  • Promotes maturity
  • Improves seed set
  • Regulates metabolism of carbohydrates
  • Facilitates the synthesis of nucleic acids
  • Maintains cell wall integrity of roots to reduce beneficial root exudates
  • Essential for cell division and development
  • Aids in the use of nutrients and regulates other nutrients
  • Aids production of sugar and carbohydrates, and is essential for seed and fruit development
  • Boron enhances uptake of Ca, Mg, and K, and enables sugar translocation.


Boron - Nutrient in Soil

  • Sandy soils receiving excessive amounts of irrigation water, and calcareous soils (pH>8) are at risk of B deficiencies.

Boron - Deficiency Symptons

  • Poor seed set or fruit set
  • Causes breakdown of growing tip tissue
  • Retardation of new growth, followed by death of younger leaves
  • At B concentrations 12 ppm or less, terminal buds die and shoot dieback takes place
  • Deficiency in alfalfa - yellowish to reddish yellow discolouration of the terminal foliage
  • Breakdown of root crops such as beets and turnips, which develop corky dark discolorations
  • Rhizobia development in the roots of legumes is inhibited

Boron - Factors Affecting Deficiency

  • Low soil moisture
  • Coarse textured, well drained, sandy soils and soils with low organic matter can all reduce Boron availability.
  • Soil with high organic matter will have greater availability of Boron.
  • Soils with high levels of available Calcium may require additional applications of Boron.
  • Boron deficiencies decrease the rate of water absorption, root growth, and translocation of sugars in plants.

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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