2008/2009 Tomatoes Leaf Spot

I have Early blight which is a fungus disease on my Red Russian and Beefsteak tomatoes. It's left pin holes in the leaves and caused flowers to drop

I hope that a remedy from Gardening Australia will work, http://www.abc.net.au/gardening/stories/s1484689.htm.

In 2 litres of water add a drop of vegetable oil, a drop of detergent, 4 teaspoons of bicarbonate of soda. It's perfect for tomatoes.

There is another recipe among Gardening Australia's factsheets which is a bit different, it includes Pestoil, however this recipe should work well. Sydney Botanic Gardens use a similar solution.