| Analysis | W/V |
| Nitrogen (N) | 4.0% |
| Phosphorus (P2O5) | 22.9% |
| Calcium (Ca) | 1.0% |
| Boron (B) | 3.0% |
Product Description: Highly stable solution of boron together
with calcium to enable its rapid uptake by plants.
Density: 1.35 g/mL
Solubility: Complete
Boron Deficiency
Chemically, boron has a close affinity for calcium, which is also
expressed in its association with several of the nutritional functions
of calcium. As calcium is regarded to be one of the most important
elements to consider in nutrient balance, this makes boron equally
important. Boron is involved in many of the crucial metabolic activities
of the plant, and as such, deficiency of this element affects both
productivity and quality quite severely. The synthesis and movement of
carbohydrates is listed as one of boron’s important functions. It
therefore has a central role to play in seed set and seed fill. Its
close link to calcium involves it in nitrogen metabolism, as well as
being closely involved in the stability of cell wall components, of
which calcium plays a major part. Boron is a particularly important
nutrient for the nodule bacteria of legumes (clover and lupin), and for
oil-bearing seeds such as canola and peanuts.
Boron deficiency is very often encountered in sandy, acidic soils where
leaching has taken place. This is because in acidic soils boron is
present as soluble boric acid. Deficiency is also often seen in high pH
calcareous soils. In cereal crops, boron deficiency is characterised by
brittle stems; or terminal leaves and buds may die (dieback). In
horticultural crops, carbohydrate storage roots are often split, and
stems develop corky or hollow sections. Fruits assume odd shapes in
deficiency.
In cereals, the level of boron in grain is a good indicator of the
soil’s ability to supply boron, as it is closely associated with
carbohydrates in grain. Productivity of cereals is enhanced considerably
by applying Soil and Foliar Boron at early tillering and at around three
weeks before flowering.
Application Rates: Apply Soil and Foliar Boron at a rate of 2
litres per hectare for mild deficiency, or for severe deficiency at the
rate of 3 litres per hectare.
Water (minimum): Broad-acre crops at 50 litres per
hectare, and horticultural crops at 400 litres per hectare.