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2.3.6.d What are the risks of trimming at the wrong time or too intensively?

Trimming too early encourages the production of side shoots and the foliage may become thicker rather than higher, which is undesirable and does not allow good ventilation of the bunches.
Overly severe trimming can have a negative impact on yield and grape quality. If it leads to the removal of a large number of leaves, many photoassimilates are lost which then reduces the synthesis and accumulation of sugars in the grapes. This can cause sugar levels to decrease, acidity to increase, and more generally a delay in ripening. Moreover, if summer weather conditions are not optimal (high rainfall, not much sunshine) then such delays in ripening are accentuated.

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