Abstract:
CBT is the most serious viral disease of cotton in Australia and is transmit-ted by cotton aphids (Aphis gossypii). CBT symptoms include reduced, plant height, leaf size, petiole length, inter-node length and boll size. Stunted, bunchy plants are common. Usually a period of 3-8 weeks lapses between when the infection occurs and when symptoms first appear. Affected plants often occur in patches or on crop edges and are associated with areas of highest aphid activity. The extent to which yield is affected depends on the proportion of plants infected and how early infection occurs.
