When we bought our property on the Bass River at Grantville, we soon realised its importance as part of the only remaining riparian forest on the Bass River. Our vegetation also provided the only link between the Grantville Flora and Fauna Reserve and the Bass. As well as maintaing a vital regional biolink Once that was firmly established in our minds we set about ensuring that production on Blue Mountain Creek became not only sustainable but renewable.
Self-renewing
topsoil that is biologically active is essential for productive
agriculture as well as a healthy environment. It is the
over-riding requirement for the health of plants, animals and people.
But unfortunately it's not something that's high on the radar of
most farmers.
Appropriate
management of soil biology in agriculture, horticulture, forestry
and conservation areas is hard to find and is one of the most
neglected natural resource issues in Australia. Most of our
grasslands and croplands are nowhere near as healthy as they
should be.
They
often feature areas of bare ground, sheet and gully erosion, weeds
and an almost complete lack of desirable plant species. It's an easy
but gullible assumption that removing the weeds and replanting
some 'better' species will solve the problems. Decades of
experience have demonstrated that this simplistic approach
rarely works.
The
interactions between animals, plants and soil biota remain out of
balance because the essential requirement of soil management has not
been addressed. The consequent shortfall in ecosystem services,
such as nutrient availability, results in costly (and damaging)
supplements being added to the soils.
Landscapes
are not degraded because they lack desirable species. The reality
is that desirable species will not flourish when landscapes are
degraded.
In
agriculture, grazing and cropping account for most of the land use.
If we can get our resource managers (and farmers) to recognise that
the main focus of natural resource management needs to be to
maintain high levels of humic materials to rebuild topsoil, we
will see some top results. But it will require radical
departures from conventional methods of production.
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