What is meant by the bio-availability of a nutrient?

1 Answer
Sep 18, 2016

The " soil - plant " system's capacity to supply / absorb nutrients is called soil nutrient bio availability.

Explanation:

Soil
a) supports the plant
b) is a determining factor for root growth and extent
c) is a reservoir of water and nutrients for the plant.

The soil controls the availability of most of the essential plant nutrients. This process deals with :

1) release of nutrients from soil, by conversion of nutrients from solid phase to solution phase.

2) the movement of nutrients through the soil solution to the plant root mycorrhizae.

3) absorption of nutrients by the plant root mycorrhizal system.