Central Queensland University PhD student Sandrine Makiela is researching the cause of a dieback condition that affects buffel grass.

On one property 200 acres of improved pasture have been lost to this condition over the past three years.

Buffel grass is an introduced species used largely by graziers to increase productivity in the beef industry since it is more digestible than many native grasses.

There are about 10 species of buffel grass introduced to Australia for commercial purposes. However, one variety in particular, known as ‘American’, is more susceptible to the condition.

The condition has caused Central Queensland graziers concern since 1993 and is estimated to have spread through many hundreds of acres of pasture.

The dieback condition causes healthy leaves to wilt and turn bright red from the tip downwards. Within one to two months the plants are dead and the roots appear stunted.

Ms Makiela, a member of the Plant Sciences Group at CQU, has demonstrated that when areas of buffel pastures die, native grasses and weeds take over the patch. These plants are not as nutritious for cattle.

Various tests for diseases, chemical toxicity and nutrient deficiencies are underway.

Although her research has been impeded by the drought, Ms Makiela has made progress in glasshouse, shadehouse and in laboratory investigations. Her field work has now increased due to the recent rains that have revived the buffel paddocks.

Ms Makiela will present a seminar on this topic on 8th May, from 1pm at CQU Rockhampton’s building 33/G.14.