Résultat
Aluminum (Al) toxicity
Ammonium (NH4) toxicity
Calcium (Ca) toxicity
Iron (Fe) toxicity
Sodium (Na) toxicity
Wind-blown sand abrasion
Allelopathy
Weeding injury
Staking injury
Lightning
Fluor (F) toxicity
Snow
Low temperature of soil (cold soil)
Air pollutant
High temperature of soil surface
Freezing rain
Poor germination of seeds
Low fertilization
Flooding
Poor oxygenation of the nutrient solution (root asphyxiation)