This product is derived from barley straw and it is used to suppress the growth of aquatic algae and blanket weed.
Initial Dose Rate
The extract should initially be added at 8l per acre of water surface.
The best method to ensure even distribution is to mix the extract with clean pond water at a rate of 1:5 i.e. 5l of clean water to 1l of extract.
This should be applied via evenly via a knapsack sprayer.
Alternatively the extract can be added to an water inlet or the water outlet of a bank sited pump.
Regular applications of 2l per acre should continue throughout the growing season.
To get the best results from barley Straw extract spring / early summer application is advisable.