Can you send a Rhubarb plant to Australia?
Rhubarb can't be harvested the 1st and 2nd years because Rhubarb needs that time to establish its root systems. If you were to harvest it, the plant would then spend its energy making more stalks and leaves and not on root growth. Although during the second year, you can harvest some stalks, but only a 1/3 of the plant.
A farmer grows only tomatoes and rhubarb on his 360-acre farm This year he wants to plant 200 more acres of rhubarb than of tomatoes How many acres of each crop does the farmer need to plant?
Perhaps crown root rot? If so your plant should be discarded and start a new plant in another location in disease free soil. Rhubarb does best in a soil with lots of organic matter (composted manure) but needs to be well drained. Try planting your rhubarb in mounded soil. If the roots get too wet and stay that way too long, you will get rot -- a fungal disease.