Highlights•Challenges of applying deep learning to plant pathology problems are
characterised.•The impact of those challenges on current proposals is discussed.•Possible
solutions are suggested.•Some future perspectives for the technology are presented.Deep
learning is quickly becoming one of the most important tools for image classification. This
technology is now beginning to be applied to the tasks of plant disease classification and
recognition. The positive results that are being obtained using this approach hide some�…