Tar Spot (Fisheye Lesions)


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Practice here before hitting the field

Leaves or other plant tissue with differing levels of disease severity or defoliation will be presented in this 10-question quiz. It's your job to determine how severe disease or defoliation is by selecting the percentage of leaf or other area impacted. Select the best answer from multiple choice options. A correct answer will fall within an appropriate margin of error for each image.