Application of Erwinia diagnostics for a better understanding of the biology of seed stock contamination and blackleg control
The project, undertaken by JHI, SAC and CUF, investigated the effect of irrigation and level of Eca seed tuber contamination on physiological aging, seed decay, emergence, graded yield, blackleg and pathogen spread.
In general, the level of seed tuber contamination had little effect on crop growth, yield or tuber number.
Blackleg differed between seed contamination level and irrigation level. The rate and final level of blackleg development and the level of daughter tuber contamination were proportional to the Eca level on the seed. The effect of irrigation on blackleg development was greater in the south, probably due to a drier environment. On some occasions over-irrigation resulted in greater blackleg development.
The diagnostic tool was found to work well as a possible replacement for plating methods.
About this project
To investigate the effect of irrigation and level of Erwinia carotovora seed tuber contamination on physiological aging, seed decay, emergence, graded yield, blackleg and pathogen spread.