1. What the August 2026 alerts establish
A district office of the Department of Agricultural Extension posted an August 2026 surveillance alert on 17 August, and the Prachin Buri Provincial Agriculture and Cooperatives Office posted a rainy-season warning on 20 August. These confirm that surveillance remains current; they do not prove that every orchard or lot is infested.
DOAE educational material says external appearance may not reveal affected fruit because larvae feed within the seed. That limitation explains why one visual check at receiving or packing leaves a gap.
2. What the four screening layers say
DOAE’s farm-to-export framework starts with mature fruit and at least 24 hours of conditioning before the packhouse. The second layer calls for 48-hour conditioning in stacks separated by origin, a responsible person and detailed sampling at the packhouse.
The third layer increases sampling for phytosanitary certification at the packhouse from 3% to 5% and extends checks to the container front. The fourth adds export-point sampling and certificate-issuance guidance. These numbers should be cited within that measure, not detached and presented as a universal trade specification or perpetual guarantee.
3. A traceable Four-Layer Pest Evidence Pack
Time and sampling percentages matter only when the business can identify origin, stack, inspector, finding and decision. The evidence pack should record normal events and exceptions as they occur, not be reconstructed after a problem.
- Orchard Record — plot ID, fruit-development period, surveillance, findings and actions tied to official advice.
- Harvest & Origin Isolation — cut date, responsible person, container/fruit code, conditioning start and evidence against origin mixing.
- Packhouse Inspection — receiving stack, time, inspector, sampling method, finding, hold and link to source lot.
- Phytosanitary & Export Check — samples, findings, decision authority, related document and release/hold/reject status.
4. Stop mixing before investigating an exception
When an anomaly appears, hold the affected and origin-linked lots, preserve samples and images, notify responsible personnel, and trace back to plot, cut date, conditioning stack and prior inspection before acting under authority and buyer requirements.
A general article should not become a pesticide recipe. Growers should follow competent officers and the registered label for the exact crop, pest and use period, including pre-harvest intervals and destination-market residue requirements.
5. What this article does not certify
Screening can reduce risk and improve detection opportunity, but cannot guarantee every fruit is pest-free. Internal records do not replace official inspection or a phytosanitary certificate.
This article does not claim that Siam Diamond is an approved exporter, holds a particular certification or has completed every measure. The image and evidence pack are editorial tools that must be aligned with current authority and destination requirements.
