@Setanta,
It is fertile area.....but has been experiencing drought.
The fires likely won't affect agriculture in themselves. The stock losses will, though, if they are big.
In my view, Australia has had broadly predictable weather, though we have always looked to warm currents in the pacific Ocean to explain and predict droughts, and it has recently been posited that it is more the Indian
Ocean which affects us.
The current extreme weather is just as predicted in global warming models...and greater unpredictability is also predicted