Guests please note: Sylvania Park, 808 East Rd, Drung, VIC, 3401
Glenn McDonald will discuss the vital role of P in
plant functions. Here is an excerpt of Glenn's presentation.
Phosphorus
While soils can contain substantial amounts of P, the
majority is unavailable to plants and the concentration of P in the soil
solution is generally very low (~1-10mM).
Therefore, while many plants are very effective in taking up P from the soil
solution at low concentrations at the soil-root interface, the limiting factor
is the supply of the soluble P to the roots.
The main way of overcoming this low supply of P has been to apply P
fertiliser, but there is now a growing interest in trying to unlock and utilise
the large P reserves that are in the soil.
Factors such as the size and the distribution of roots in the soil, the
ability of the plants to alter the rhizosphere characteristics and the effects
of the plant-microbe interactions in improving P availability and uptake can
become important to the P nutrition of plants.
The role of P in plant
Phosphorus is an essential nutrient for plants and without
adequate supplies of P growth will be reduced.
There are two important roles of P in plants - in energy metabolism and
in maintaining cell structures in plants.
While the amount of P required for normal growth is much less than the
requirement for N, an inadequate supply of P will reduce the capacity of plants
to photosynthesise and perform the range of metabolic functions required for
normal growth.
Registration still open:
Website Registration: P SCHOOL
Download PDF: P SCHOOL FLYER
Download PDF: P SCHOOL FLYER
More information: Darren Cribbes 0400 600 556
Owen McCarron 0419 006 100
Owen McCarron 0419 006 100
