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Lexicon

The largest wine encyclopedia in the world with 26,430 Terms.

0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Chlorosis

This vine disease (also known as jaundice) belongs to the group of yellowing diseases. Due to various causes, it is referred to as lime, compaction, bad weather or stress chlorosis.

Cause

Chlorosis occurs particularly frequently on compacted, wet and calcareous soils. The cause of the chlorotic phenomena caused by lime is the high pH value. A lack of nutrients such as iron, magnesium and nitrogen reduces the formation of chlorophyll necessary for photosynthesis.

Bad weather, wetness and compaction chlorosis prevent gas exchange in the soil. This also leads to the formation of iron carbonate. This iron is poorly soluble and therefore the uptake of the vines is severely impaired. Excessive irrigation or water stress (lack of water) can also lead to chlorosis.

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