Lai R.,Fujian Agriculture and forestry University |
Lai R.,Longyan City Corporation of Fujian Province Tobacco Corporation |
Lai R.,Longyan Substation of Fujian Science and Research Institute of Tobacco Farming |
You M.,Fujian Agriculture and forestry University |
And 7 more authors.
Biocontrol Science and Technology | Year: 2011
Tobacco bacterial wilt, Ralstonia solanacearum, is an important disease affecting the root and stem. The disease causes extensive damage to flue-cured tobacco all over the word. Field trials were conducted in 2008 and 2009 at Longyan, Fujian Province, China, to evaluate garlic intercropping for enhancing the biological control of R. solanacearum in flue-cured tobacco fields. The results of the study demonstrate that tobacco bacterial wilt was clearly inhibited by intercropping garlic in 2008 and 2009. The appearance of the disease in intercropped fields was delayed for about 15 days. The total number of R. solanacearum in root system soils was significantly lower in intercropped fields than in monocultured fields in 2008. These numbers were between 138 × 10 4 and 161 × 10 4 cfu g -1 dry soil in intercropped fields. The corresponding values in monocultured fields were 357× 10 4 cfu g -1 dry soil. The monetary value of tobacco leaves was obviously higher in intercropped fields than in monocultured ones. The per cent increase in monetary values in the intercropped fields was between 14 and 34%. Consequently, intercropping tobacco with garlic might be very useful for enhancing biological control of R. solanacearum in flue-cured tobacco fields. © 2011 Taylor & Francis.