Zinc deficiency
Nutritional Disorder Symptoms Growth restricted. The leaves show interveinal necrosis. In the early stages of zinc deficiency the younger...
Iron deficiency
Nutritional Disorder Symptoms The most common symptom for iron deficiency starts out as an interveinal chlorosis of the youngest leaves,...
Iron deficiency
Nutritional Disorder Symptoms Generally, onions appear insensitive to iron deficiency, with most soils supplying adequate levels of iron...
Magnesium deficiency
Nutritional Disorder Symptoms Older leaves become yellow over the entire length of the leaf. Chlorosis (yellowing) may be followed by...
Magnesium deficiency
Nutritional Disorder Symptoms Deficiencies result in slow plant growth with the older leaves becoming uniformly yellow along their entire...
Slippery skin: Internal tissue rot
Pathogen: Burkholderia gladioli pv. alliicola (syn. Pseudomonas gladioli pv. alliicola) Symptoms The internal tissue will rot in advanced...
Slippery skin: Field symptoms
Pathogen: Burkholderia gladioli pv. alliicola (syn. Pseudomonas gladioli pv. alliicola) Symptoms Field symptoms often appear as one or...
Slippery skin: Softening of neck tissue
Pathogen: Burkholderia gladioli pv. alliicola (syn. Pseudomonas gladioli pv. alliicola) Symptoms During the early stages of this...
Sunscald: Soil line affected tissues
Disorder Symptoms High soil temperatures damage seedling tissue at the soil line, resulting in shriveling and collapse of plants....
Sunscald: Affected tissue collapses and becomes bleached in appearance
Disorder Symptoms Sunscald is primarily a problem on young seedlings and mature bulbs. High soil temperatures damage seedling tissue at...