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KIA-ORA

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Contacts

Fiona Leech

Phil Graham

Location

Bookham grazing demonstration site, 6 km west of Bookham on the Hume Highway

Soil

Yellow Kurosol: Sandy loam topsoil 10 -40 cm; bleached, structureless  A2 horizon; clay subsoil

Aspect

South facing slope 4-5%

Paddock History

 

Kia-Ora

 

Paddock 1

Paddock 2

  2007 - present Pasture:

native perennial grass-based pasture

Fertiliser: unfertilised superphosphate fertiliser applied to maintain 20 mg P/kg soil (Colwell)
molybdenum applied every 5 years
Stock: rotationally grazed by landholder stocked continuously with 5.9 Merino ewes/ha, lambing in early August
progeny are weaned off the block in November.
  1993 - 2006 Pasture: native perennial grass-based pasture
Fertiliser: unfertilised superphosphate fertiliser applied to maintain 20 mg P/kg soil (Colwell)
molybdenum applied every 3 to 5 years
Stock: stocked continuously with 6 mature Merino wethers/ha stocked continuously with 12-15 mature Merino wethers/ha
  1976 - 1993 Pasture: native perennial grass-based pasture
Fertiliser: unfertilised
     

Pasture composition is in the order of 35% native perennial grass (mainly wallaby grass, Austrodanthonia spp., and weeping grass, Microlaena stipoides), 5% other naturalised perennial grasses, 30% legume (mainly subterranean clover), 20% annual grass and 10% broadleaf weeds when sampled in early spring

 

For a full summary of the results for the Bookham grazing demonstration, download:
     Bookham Summary Pack  [156 kB]

or contact the NSW DPI Yass Office (6226 2199)

Objectives

  1. Compare leakiness under a native perennial grass-based pasture with and without superphosphate fertiliser application.



CSIRO Land and Water

HMLC

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