Banana disease has likely spread in Qld

Authorities have told far north Queensland banana growers that its likely a destructive fungal disease had already spreadfrom an infected farm at Tully.

Growers were given the sombre news at a meeting in Tully on Thursday night.

They were warned Panama TR4 disease, which wiped out the Northern Territory's banana industry, was likely to be found on several other properties.

The fungal disease, which lives in the soil and kills banana plants, poses a huge threat to theregion's $570 million industry.

Grower Len Collins, who owns a farm near the infected site, says he's taken out ads in the local paper banning anyone from entering his property.

'There is nobody here that's ready for it. We've all got a lot of work to do in a short time, and a lot of it should have beendone before,' he told the ABC.

'Everybody could have done more. Some people had in some quarantine measures, but measures that aren'tgood enough for this disease.'

The infected Tully farm remains under quarantine.

a)On the same diagram, draw two supply curves for bananas in QLD, one before and one after the disease impacts how many bananas can be produced for given effort.

b)Discuss the relationship between cost curves and supply curves, and how the change from (a) can be explained in terms of cost curves.

c)Explain how the elasticity of supply would change in the long term compared to the short term.