Frequently Asked Questions (FAQ) on Sterile Insect Technique (SIT) for Codling Moth Control
What is SIT?
Sterile Insect Technique (SIT) is a biological pest management method that mass-rears and sterilizes codling moths before releasing them into orchards. Once these sterile moths mate with wild populations, no viable offspring result—gradually reducing overall infestations without heavy reliance on chemical pesticides.
How much does SIT cost per acre?
Half Rate
$315 / Acre
✓ 400 sterile codling moth per acre
✓ 20 full service turn key releases
✓ Good for light pressure
Full Rate
$400 / Acre
✓ 800 sterile codling moth per acre
✓ 20 full service turn key releases
✓ medium pressure
Double Rate
$570 / Acre
✓ 1600 sterile codling moth per acre
✓ 20 full service turn key releases
✓ Medium to medium-high pressure
How does SIT differ from conventional chemical controls?
Chemical Controls:
- Rely on repeated sprays and mating disruption devices
- Can be costly, labor-intensive, and affect beneficial insects
SIT:
- Targets the pest’s reproductive cycle directly
- Leaves no harmful residues
- Helps preserve beneficial insect communities
Can SIT replace existing control methods entirely?
Over time, yes. Initially, growers often combine SIT with existing measures—like mating disruption and selective sprays—especially when codling moth pressure is high. As SIT suppresses populations, the need for other inputs can be reduced.
How does SIT compare economically to traditional controls?
Organic Orchards:
- Codling moth management can exceed $1,000/acre using organic sprays and devices. SIT reduces long-term costs and fosters orchard health.
Conventional Orchards:
- Spray programs typically run $300–$400/acre. While SIT may initially be on par or slightly higher, it can reduce future spray requirements, save beneficial insects, and offer environmental benefits.
Does SIT work in real-world orchard conditions??
Yes. Regions like British Columbia and parts of Washington have used SIT successfully, often achieving near-zero codling moth pressure. Growers report better pest control and healthier orchards when SIT is applied consistently and in collaboration with neighbors.
Do I still need mating disruption if I use SIT?
In most cases, yes—at least at first. SIT pairs well with existing controls and can gradually reduce reliance on them as moth populations decrease.
What about neighbor participation?
Codling moths don’t recognize orchard boundaries. When multiple growers adopt SIT regionally, the collective pest pressure drops significantly, increasing effectiveness for everyone.
How do I get started with SIT?
Visit m3agtech.com/sir-sales/ to learn more and begin the process.