On 3 April, 2015, the National Agro-Tech Extension and Service Center (NATESC) made a forecast on the occurrence of pests and diseases. Accordingly, due to the relatively high temperature and more rainfalls since March, the wheat planting areas in Southwest China and Changjiang River basin have entered an epidemic of wheat stripe rust, while in North China it has showed up in succession.
By 2 April, the disease has stricken 329 counties/county-level cities/districts in 65 cities/areas in 9 provinces/municipalities, including Sichuan, Yunnan, Guizhou, Hubei, Henan, Shaanxi, Gansu and Anhui provinces and Chongqing Municipality, area covering 499,333 ha and severity recording the most serious in recent 5 years.
Since 12 March, 2015, wheat stripe rust has been spreading swiftly and violently in most areas of Southwest China and Hubei Province, with continuously expanding area and multiplying number of involved counties. Specifically by 2 April:
- Hubei: multiplies in 3 successive weeks, from 34,533 ha to 193,733 ha
- Sichuan: from 45,133 ha to 159,867 ha, 105 counties involved
- Yunnan: from 38,133 ha to 62,200 ha, 93 counties involved
- Guizhou: from 3,400 ha to 32,533 ha, 40 counties involved
- Chongqing: from 10,200 ha to 25,200 ha, 18 counties involved
The NATESC made the warning and required all-level agricultural departments to have close monitoring and carry out prompt and effective prevention and control.
Figure 4: Occurrence of wheat stripe rust in China from Jan. to early April, 2010-2015
Note: 1. Statistics in spring only is calculated;
2. Statistics is compiled in early April every year.
Figure 5: Occurrence regions for wheat stripe rust in China, as of 2 April, 2015
NOTES TO EDITORS
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