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AuStar® plays the same fundamental role in all plants by inhibiting gibberellin synthesis 

The primary effect of AuStar® is to reduce canopy growth and direct nutrients and the carbohydrates synthesised in the leaves into fruit and seed production, rather than into non-productive leaves and stems.

Major citrus producers are using Austar to great effect to increase tonnage yields per hectare, size quality and flavour. The texture is also greatly improved and the canopy can be effectively controlled as additional benefits.


  • Excellent control of canopy management;
  • Reduction in pruning time and costs;
  • Profuse flowering;
  • Increased yields by a minimum of 25%;
  • Increased fruit size;
  • Rougher texture (Persian Lime);
  • Uniformity.