Research progress of the resistance management and sustainable control of diamondback moth (Plutella xylostella) in China

Key Words： diamondback moth, resistance detection, resistance mechanism, resistance management, sustainable control, demonstration

Abstract：         Resistance monitoring, resistance management, overwintering, migration, resistance mechanism and sustainable control of diamondback moths were investigated in South, Southeast, North, Southwest and Central China. The results indicate that generations of diamondback are increasing from north to south. Populations have one to two peaks each year and these occur later in the north than in the south. Populations are affected by temperature, rain and natural enemies. The results of resistance monitoring and management show that resistance to 11 insecticides is high but also varies markedly between different locations. Resistance was high in the South, Southwest and Southeast, and is increasing in Central and Northern regions. These results were used to develop a strategy for resistance management. Data on overwintering and migration illustrate that there is a limitation on over wintering from Wuhan to Zhumadian. Diamondback moths have two kinds of migration. One is “move in and move out” and the other is “move in and settle down”. The resistance mechanisms to Bt, abamection, Chlorfenapyr, indoxacarb and diafenthiuron have a heterogeneous genetic basis. Suggestions for methods and strategies of diamondback moth integrated management are made with regard to different regional conditions. Fortyfive sites in the South, North, Centre, Southeast and Southwest have been established for demonstration of technologies for diamondback moth integrated management. During these demonstrations, more than 160 000 technical handbooks were delivered, and 51 900 farmers and agricultural technicians trained on a total of 24 000 hectares of farms and orchards. Obvious economic, ecological and social benefits followed.