Over Seeding Cool Season

Over seeding into an existing sward is a very competitive environment for the new seedlings to establish in.
The new seedlings need all the help they can get to ensure good establishment.
Correct nutrition and water availability are critical for best results.

Approach

Apply the optimum amount of nutrients with the correct release pattern to ensure the successful establishment of a grass stand from seed.
Nutrients should be released gradually (matching seedling tolerance to EC levels) in the very early stages.
Too much available nutrient (excess EC) at time of sowing will inhibit seed germination and establishment.
As the seedling establishes and growth begins, nutrient levels can increase, as the plant is able to tolerate higher EC levels.
Insufficient available nutrients after seed emergence will slow grass growth and canopy closure.
Good quality homogeneous fertilizer granulation will ensure even distribution of nutrients close to seed.
Supply low levels of readily available phosphorous as a spray after seed emergence to encourage good rooting and canopy closure.
Minimise traffic following over-seeding where possible.
Open up surface with verticutting/scarifying prior to sowing.
Light frequent irrigation to maintain seedbed moisture.