Time to give the vines a haircut. Vines are a bit like weeds in a way, they are quite hardy and give want to keep on growing. We need to manage the vine so that the vegetative growth is in balance with the fruit development. .
Trimming also opens up the canopy which is beneficial for the fruit on the vine. It allows increased light into the canopy and onto the bunches. Airflow within the canopy is improved and so disease pressure is reduced.
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Timing can be an issue as trimming too early in the season can promote excess lateral growth (ie: more leaf area). Also too much sunlight on bunches can cause sunburn. And trimming must be timed in with netting so as not to cause too much regrowth through the nets.
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