Fertiliser maintenance programs in public parkland tend to be driven by budgetary constraints rather than by plant needs. As a result, they can be ad hoc or virtually non-existent.
For turf, as with any grass, the main nutritional requirement is nitrogen (N). However, not all grasses are created equal when it comes to nitrogen. For example, blue couch will persist better than green couch under low soil nitrogen.
Experiments have determined the optimum nitrogen requirements for the maintenance of warm-season turfgrasses in Southeast Queensland.
|Full title||Establishment and management of salt-tolerant amenity grasses to reduce urban salinity effects (Nitrogen trials are a subsection of the broader project)|
|ID||TU06006 (and earlier work TU02005)|
|Dates||Start date: January 2007
End date: January 2010
|Project leader||Dr Rachel Poulter, (07) 3286 1488
|Benefits||The project will assist in the development of nitrogen maintenance protocols for turf and parkland managers in Southeast Queensland.|
|Methodology||Turfgrass cultivars trialled at Redlands Research Station include:
There were six fertiliser N treatments (0, 50, 100, 200, 300 & 400 kg N/ha/year) applied as equal split applications in early September, November, January, March, and May. As well as taking dry matter yields every 2 weeks during the warmer months (4-weekly during winter), ratings were made of turf quality, density, colour, and weed content in each 2 x 2 m fertiliser plot.
|Results||These results were collected from project TU02005. Nitrogen applications commenced January 2005 on an infertile forest soil.
|Project staff||Dr Rachel Poulter, Research Scientist
Bartley Bauer, Research Scientist
Matt Roche, Research Scientist
|Funding||Horticulture Australia Limited|
|Collaborating agencies||Queensland Primary Industries and Fisheries
Redland City Council
Gold Coast City Council
|Research locations||Redlands Research Station|