Postharvest vacuum fumigation with methyl bromide (MB) was approved by Animal and Plant Quarantine Agency (APQA), Republic of Korea, to control codling moth, Cydia pomonella (Lepidoptera, Tortricidae), infesting 23-kg bags of in-shell walnuts (Juglans regia). Consistent with the approved parameters, in-shell walnuts with nut meat temperature (T) of 15.4 ± 0.2 °C (grand mean ± 2 SD; ${\bar{\text{x}}}_{\text{GM}}$ ± 2s_pooled) were packaged in sealed fiberboard cartons, loaded to 53% (v/v) chamber capacity, and fumigated in triplicate trials involving a single 63-carton pallet, with each lasting 4 h following the application of 56 mg L⁻¹ MB at ca. 13.3 KPa (100 mmHg). MB concentrations were measured at four different locations over the course of each fumigation, respective Ct exposures were calculated, and the relative distribution of fumigant was evaluated. Exposures were maintained ≥ ca. 75 mg L⁻¹ h in all cases, resulting in Ct exposures sufficient to control codling moth. A single 18-pallet confirmatory trial involving sealed fiberboard cartons was then conducted at a commercial facility, gas measurements were taken as above, and a minimum Ct of 117 mg L⁻¹ h was observed. A kinetic model of MB sorption was used to demonstrate congruence across all trials, thereby supporting the reproducibility, scalability, and efficacy of this treatment, regardless if the in-shell walnuts are packaged in 23-kg bags or sealed fiberboard cartons.

使用溴甲烷 (MB) 进行采后真空熏蒸已获得韩国动植物检疫局 (APQA) 的批准，用于控制苹果蠹蛾（Cydia pomonella）（鳞翅目、獾科），侵染 23 公斤袋装核桃（胡桃）王权）。与批准的参数一致，带壳核桃的坚果肉温度 ( T ) 为 15.4 ± 0.2 °C（总平均值 ± 2 SD；${\bar{\text{X}}}_{\text{通用汽车}}$ ± 2 s_合并) 包装在密封的纤维板纸箱中，装载到 53% (v/v) 室容量，并在涉及单个 63 纸箱托盘的三次试验中进行熏蒸，每次在应用 56 mg L 后持续 4 小时^-约¹ MB 13.3 KPa (100 mmHg)。在每次熏蒸过程中，在四个不同位置测量 MB 浓度，计算各自的Ct暴露量，并评估熏蒸剂的相对分布。暴露保持≥约。在所有情况下为75 mg L ^-1 h，导致Ct足以控制苹果蠹蛾的暴露量。然后在商业设施中进行了涉及密封纤维板纸箱的单个 18 托盘确认试验，如上进行气体测量，观察到最小Ct为 117 mg L ^-1 h。MB 吸附动力学模型用于证明所有试验的一致性，从而支持这种处理的可重复性、可扩展性和有效性，无论带壳核桃是包装在 23 公斤的袋子中还是密封的纤维板纸箱中。