Writing for farmers, gardeners, planters and foresters, the Cambridge botanist Harry Marshall Ward explains plant disease by first explaining the healthy plant: its surroundings, food, metabolism, roots and root-hairs. He then shows how weather, soil, wounds, fungi and insects such as Phylloxera upset that living machine, and how growers can recognise the results.
A founding work of plant pathology in English, still clear for gardeners curious about the science. Download the free EPUB.