Physiological plant disorders:
A) Natural
o Drought
o Frost damage, and breakage by snow and hail
o Flooding and poor drainage
o Nutrient deficiency
o Salt deposition and other soluble mineral excesses (e.g., gypsum)
o Wind (windburn, and breakage by hurricanes and tornadoes)
o Lightning and wildfire (also often man-made)
B) Man-made (arguably not abiotic, but usually regarded as such)
o Soil compaction
o Pollution of air, soil, or both
o Salt from winter road salt application or irrigation
o Herbicide over-application