A late-June cotton aphid forecast from Xinjiang points to an uneven risk pattern: generally light regional occurrence, but much heavier pressure in selected local production areas.
On June 25, 2026, China’s National Agricultural Technology Extension Service Center (NATESC) published “新疆棉蚜发生动态及趋势预测” (“Xinjiang cotton aphid occurrence dynamics and trend forecast”), describing observations through June 22 and the expected June-July trend.
Most of Xinjiang’s cotton had entered the full-bud to flowering stage. Although cotton aphid (Aphis gossypii) occurrence remained generally light across the region, some locations were experiencing medium to moderately heavy pressure. NATESC identified the pest as the leading control concern in cotton fields at that stage.
The regional average had reached 923 aphids per 100 plants, 94% higher than at the same time the previous year. The figures also reveal pronounced local hotspots that are not captured by the regional average.
In southern Xinjiang, Awat County recorded as many as 19,000 aphids per 100 plants. In northern Xinjiang, Hutubi County reached 30,000 aphids per 100 plants, while leaf curling affected up to 50% of plants there.
The affected area reported by NATESC stood at 3 million mu-occurrences as of June 22. The agency forecast moderate June-July cotton aphid occurrence overall, with the total affected area projected to reach 10 million mu-occurrences across Xinjiang.
Why it matters
Xinjiang’s regional picture combines a sharp year-on-year increase with highly uneven field pressure. An overall classification of generally light occurrence can coexist with serious localized infestations, as the figures from Awat and Hutubi counties demonstrate.
The 94% increase in the regional average shows that aphid populations were already substantially higher than the previous year. At the same time, the gap between the regional average of 923 aphids per 100 plants and local peaks of 19,000 to 30,000 aphids per 100 plants highlights the importance of field-level monitoring.
The report’s leaf-curling figures add another visible indicator of local pressure. In Hutubi County, the affected proportion reached 50%, reinforcing the need to distinguish regional forecasts from conditions in individual production areas.
For taxonomic background, the EPPO Global Database provides a dedicated record for Aphis gossypii. NATESC’s report supplies the dated regional observations and forecast for Xinjiang, while EPPO provides an independent reference for the pest’s identity.
Reading the regional signal accurately
NATESC’s figures offer a clear late-June snapshot of cotton aphid pressure and the expected direction of June-July occurrence. They show rapid population growth under sustained warming, a regional average well above the previous year, several intense local hotspots, and a projected expansion from 3 million to 10 million mu-occurrences.
Field conditions can still differ considerably between locations. Crop stage, aphid density, leaf curling, and the pace of population growth should therefore be assessed locally when planning surveillance and management.
The regional figures should not be treated as a single treatment threshold or a fixed deployment schedule for every cotton-growing area. They provide an early signal for cotton programs to strengthen local observation and consider how available integrated pest-management tools may fit their conditions.
How an alarm-pheromone approach supports response
(E)-β-Farnesene is an alarm pheromone widely applied as a repellent and synergist in push-pull and integrated aphid-management strategies.
Its push-pull role provides a pheromone-based “push” component within a broader aphid-management program. This makes it relevant for programs seeking to incorporate behavioral tools alongside other locally selected practices.
Aphis gossypii is one of the target pests for (E)-β-Farnesene. Its use in Xinjiang or any other cotton-growing region still requires local validation of blend ratios, delivery formats, placement, timing, and other deployment parameters.
These decisions are especially important in a region where the official report describes both generally light occurrence and much heavier local pressure. A program designed for a hotspot with tens of thousands of aphids per 100 plants may differ from one developed for an area closer to the regional average.
The ECOPHERO solution
ECOPHERO supplies (E)-β-Farnesene for aphid-management development:
- Active ingredient: (E)-β-Farnesene
- CAS number: 18794-84-8
- Mode: Push-pull / repellent
- Application: Alarm pheromone widely applied as a repellent and synergist in push-pull and integrated aphid-management strategies
- Target pest: Aphis gossypii
- Manufacturing capability: Gram-to-ton custom synthesis
For cotton programs responding to increasing Aphis gossypii pressure, (E)-β-Farnesene offers an alarm-pheromone option for evaluation within a locally designed push-pull or integrated management strategy.
ECOPHERO’s gram-to-ton custom synthesis supports requirements ranging from early-stage development quantities to larger-volume supply.
From a regional forecast to a targeted response
The June 25 NATESC report shows that cotton aphid pressure had accelerated in parts of Xinjiang by late June. The regional average had nearly doubled from the previous year, the affected area reported as of June 22 had reached 3 million mu-occurrences, and local hotspots were recording up to 30,000 aphids per 100 plants.
With the total affected area projected to reach 10 million mu-occurrences, local monitoring and timely management planning will remain important. Where an alarm-pheromone component fits the intended program, (E)-β-Farnesene can be evaluated as a repellent and synergist within push-pull and integrated aphid-management strategies.
Contact us with the pest name or CAS number for a quote.
