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...
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...
Sunscald: Bleached areas of the affected bulb
Disorder Symptoms Affected areas dry and shrivel rapidly in bulb, and scales eventually become brown and necrotic. Scalded areas look...
Sunscald: Affected tissues in onion bulb
Disorder Symptoms On onion bulbs, affected tissue collapses and becomes bleached, soft and slippery. Affected areas dry and shrivel...
Translucent scale: Grayish watery appearance of inner scales
Disorder Symptoms Translucent scale typically appears after harvest and worsens after 3-4 months of bulb storage. The onion scales take...