Within months, winds spread the rapidly reproducing airborne spores of the disease, and by 1845 it had destroyed potato crops from Illinois east to Nova Scotia, and from Virginia north to Ontario.
Additionally, late blight disease is also responsible for the European potato famine in the 19th century which almost completely destroyed potato crops and led to the starvation of millions of people [ 4].
The bio-oil also killed 100% of Colorado potato beetles, a resistant pest that can destroy potato crops.
If it should continue so long as to cause the seeds to rot in the ground and destroy the potatoes in the low lands, it would still be good for the grass on the uplands, and, being good for the grass, it would be good for me" (Walden, V).
A serious potato disease destroyed almost all the potatoes of the Irish and caused a great famine in 1845-1846.
The oomycete Phytophthora infestans (causal agent of late blight of potatoes) is considered the dominant biotic stress afflicting potato worldwide, not only because of its capability to rapidly destroy untreated potato crops but also for itspotential to repeatedly adapt to resistant varieties in only a few years [ 21].
Americans may think of the disease that destroyed Ireland's potato crops, late blight, as a European phenomenon, but its devastations actually started with them.
Among the various aquatic, amphibious, or terrestrial species, one played an important role in modern history: the species Phytophthora infestans destroyed Ireland's potato crop and caused the famine of 1845, which resulted in a mass migration of the Irish to the United States.
They destroyed a field of potatoes and trampled wheat and maize.
The winters destroyed stored crops of potatoes and other staples and the poor summers severely damaged harvests.
