This disease is called Rio Grande gummosis in Texas and ferment gum disease in California. A citrus tree owned and maintained by the department in accordance with 5B-60.008 that is used for horticultural evaluation and to provide a source of budwood to nurserymen, primarily for establishing scion and increase trees. Disease agents spread by vegetative propagation. A plant which conforms to the description of a particular cultivar and which is from the same genetic line of descent as that cultivar. Specially designated nursery propagations made to rapidly multiply supplies of propagative material for citrus nursery tree production and meeting all the requirements of Rule 5B-60.010.
Severe disease can cause crop loss and tree debilitation.
A mature bearing citrus tree that has met all of the requirements of Rule 5B-60.007 and has been registered with the department. A citrus nursery tree produced from budwood from a registered source tree in accordance with instructions outlined in Rule 5B-60. Any live plant material used to produce nursery stock, including cuttings, budwood, seeds, seedlings, air layers, and tissue culture. The disease is spread primarily by propagation using infected budwood. Renewed annually by notification and fee payment.