How sensitive are the strips?
In terms of the type of lesions that can be detected, inoculation studies have shown that the strip detects the presence of SBR in chlorotic lesions, at about five days after tissue infection occurs, when symptoms first start to appear (covering less than 0.5% of the leaf). At this stage, it is difficult to distinguish soybean rust from a number of other foliar diseases. Further, when leaves were inoculated with a high level of spores, the strip detected rust as early as 24 hours after infection – before symptoms were visible. This suggests the strips can be used for sampling in field situations where heavy deposition of spores is expected (e.g. after a rain). In terms of the number of lesions that can be detected, the same inoculation studies showed that as many as 4-5 pustules on the suggested sample size can be detected with the strips. For a lower level of infection (fewer pustules per leaf), there is an alternate protocol taking a smaller tissue sample size, which reduces the pote
Related Questions
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- Many of the documents required along with the application are sensitive. How can I be assured that my information will be kept confidential?
- How sensitive are the strips?
