P booster - page 2

Pbooster 0-48-47 is a water-soluble fertiliser developed
by Prayon for crops grown in a soilless environment.
Pbooster is a
perfect mix of polyphosphates and
orthophosphates
, meaning that Pbooster can completely
substitute the standard phosphate fertilisers (such as
monopotassium phosphate (MKP) and phosphoric acid)
that are used in soilless cultivation. Pbooster meets plants’
outstanding phosphate requirements by maximising
polyphosphate availability.
The ideal combination of polyphosphates and
orthophosphates that is provided by Pbooster means that
certain nutrients (e.g. calcium, magnesium, trace elements)
and phosphates do not precipitate. Polyphosphates remain
more stable at a high pH than orthophosphates, as they
prevent the formation of insoluble precipitates above a pH
of between 6 and 6.5. As a result, the phosphate remains
completely available to the plant, since in the irrigation system
and around the roots, pH fluctuations are always possible
due to, for instance, the absorption of nutrients.
For example, nitrate (NO
3
-) absorption leads to a rise in pH
in the roots area.
Polyphosphates tolerate higher pHs than
orthophosphates
, so that phosphates and other nutrients
remain more available to the roots. This results in enhanced
absorption, root development and plant colouring, leading to
higher crop yields and quality.
In the past the full dose of phosphates was never replaced
by polyphosphate. What is different about Pbooster 0-48-47
is that it can
completely substitute today’s phosphate
fertilisers
because Pbooster contains some of the phosphates
in the form of polyphosphates and some as orthophosphates.
On the basis of current knowledge, phosphates must be
converted into orthophosphates before they become available
to the plant. Pbooster contains polyphosphates that are
converted into orthophosphates by hydrolysis at the roots.
If only polyphosphates are used, a temporary lack of
orthophosphates could occur, which is not the desired outcome.
Pbooster, like the whole Hortipray
®
range, is a solid water-
soluble fertiliser.
Pbooster guarantees
phosphate availability,
ensuring healthier roots
• Phosphate does not precipitate
• Phosphate does not react with other nutrients
• Phosphate is always available, even at a high pH
pH
[P] Soluble (mM)
5
5.5
6
6.5
7
7.5
1,5 mM P
7 mM Ca
3 mM Mg
8
8.5
100% Pbooster
50% Pbooster + 50% MKP
100% MKP
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
O 48 47
Pbooster effect
1 3,4
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