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Over-Sowing
This system was developed in the early 1990s for the forestry industry to enable large areas of cut over and newly developed sites to be sown with specific species of grasses and legumes that are able to control weeds and increase tree growth.
The system is site specific with seed formulations being developed for the particular problem. Seed is coated to enhance the seedling survival rates. The seed is applied from either a helicopter or fixed wing aircraft and the company has selected operators in most areas.
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The application of the seed mixes generally occurs between March and October. It is important that a spot spraying programme be undertaken in the spring where any applications have been made in autumn or winter.
This programme should run for two seasons to ensure that the trees are not affected by the grass growth in the spring and summer period.
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