The NT Department of Primary Industry has announced all citrus plants inside restricted areas in the Top End will be removed and destroyed, in an effort to clear the Territory of citrus canker.

The highly-contagious plant disease was first detected in the Top End earlier this year.

Since then, 10 restricted areas, where infected plants were found, have been established - including: the Darwin Airport, Howard Springs, Humpty Doo, Lambells Lagoon, Marrakai, Moulden, Palmerston, Woolner, Wulagi, and Katherine.

Sarah Corcoran the NT Executive Director of Biosecurity and Animal Welfare said the removal phase was critical to protect Australia's citrus industry.

"To allow citrus trade across Australia and internationally the Northern Territory must demonstrate it is free from citrus canker," she said.

"To eradicate citrus canker and reach the goal of recommencing trade, we need to remove all citrus plants and plant material within a 600 metre radius of infected properties.

"The 600 meter radius is based on scientific evidence available from previous outbreaks in Australia and overseas.

"Residents living within the restricted areas continue to be advised to not remove the plant or plant materials as this may spread the disease.

"Removal will be undertaken by authorised inspectors in accordance with required quarantine disposal processes."