Our Approach

The concept of Sterile Insect Release (SIR) on T. leucotreta is a scientifically based process, requiring that releases of sterile insects should be done at a certain minimum ratio of FCM sterile adults compared to the wild FCM population.

DELTA TRAP

For effective control of wild T. leucotreta, an overflooding ratio of 10 sterile adults to one wild adult (10:1) per trap required on a weekly basis. The adult female emits a pheromone in order to attract males for mating. The higher the amount of sterile adults in relation to the wild population, the less likely a wild male and female will find each other for a successful mating.

The latter relationship (10:1) are monitored on a weekly basis by utilising a pheromone based trap to attract male adult T. leucotreta. The difference between the wild and sterile population can then easily be determined.

PROTECTING YOUR AGRICULTURAL PERFORMANCE

RELEASE VEHICLES

The release of sterile T. leucotreta is executed over contracted areas twice a week from 1 November until 30 April, with single releases between September to November and May to June. Double releases are needed because of the shorter lifespan of the adult moth in the summer (4 -7 days in summer and 10 -15 days in winter) in order to maintain a healthy sterile population at all times. Releases take place with R22 helicopters and small crop spraying aircrafts. The use of unmanned aircrafts is currently being investigated.

REDUCING FCM RELATED FRUIT DAMAGE BY 95%

MONTITORING

XSIT has a team of skilled monitoring personnel who monitor this ratio on a weekly basis. This data is used to determine which areas this minimum ratio is not being maintained so that the amount of sterile FCM that is released within that area will be increased to maintain the minimum ratio.