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- Title
Threshold of Soil pH for Occurrence of Tobacco Bacterial Wilt in Henan Province.
- Authors
Haitao Wang; Haohao Hao; Xiaojing Xu; Haitang Huang; Xueli Song; Lijun Yang
- Abstract
[Objective] The paper was to study the relationship between spatial distribution characteristics of soil pH and bacterial wilt in tobacco-growing area in Henan Province. [Method] The 21 tobacco-growing fields infected by bacterial wilt and 91 tobacco-growing fields with no cases were selected from Henan Province, and the pH of fields was determined. [Result] Bacterial wilt mainly occurred in the tobacco-growing fields in Luoshan, Pingqiao, Queshan, Biyang, Suiping, and Xiping, and the soil pH mainly ranged from 5.5 to 6.5 (accounted for 84.75% of total surveyed tobacco fields); bacterial wilt had not been found in tobacco-growing fields in Tanghe, Zhengyang, Shangcai, Sheqi, Wuyang and Chenqu, and the soil pH mainly ranged from 6.5 to 7.0 (accounted for 81.25% of total surveyed tobacco fields). There were significant differences in soil pH between the fields with and without bacterial wilt, and soil pH 6.5 could be regarded as the threshold for the occurrence of tobacco bacterial wilt in Henan Province. There was extremely significantly positive linear correlation between soil pH and latitude (y=0.737 5i-17.799, R²=0.386, P<0.01). The geographical boundary of soil pH 6.5 was roughly 33" N, and bacterial wilt was less likely to occur in the north tobacco-growing areas of the boundary. [Conclusion] The study will provide a scientific basis for the prevention and control of tobacco bacterial wilt in Henan.
- Subjects
HENAN Sheng (China); SOIL acidity; TOBACCO; GEOGRAPHIC boundaries; PROVINCES
- Publication
Plant Diseases & Pests, 2021, Vol 12, Issue 2, p11
- ISSN
2152-3932
- Publication type
Article
- DOI
10.19579/j.cnki.plant-d.p.2021.02.004