Deficiency of micronutrients in onion plants Iron deficiency Causes Symptoms Treatment Iron deficiency in onion plants increases as a result of high soil acidity, and is more widespread in calcareous soils and soils rich in copper or

Lack of major nutrients in onion plants Phosphorus deficiency Causes Symptoms Treatment Phosphorus deficiency increases due to acidic or very alkaline soil and iron-rich soil under cold or humid weather conditions, where phosphorus is considered

Name of the disease: Onion yellow dwarf virus (OYDV) Scientific name: Onion yellow dwarf virus (OYDV) Type of disease: Viral Disease family: Potyviridae (the appearance of initial symptoms as a result of infection with the virus (OYDV)) Causes of the disease: Yellow dwarf virus targets the onion plant