Other natural phenomena that cause problems to the vine when they occur outside of time, are rain. While the rains
spring are key to getting a good grape, summer rains are extremely dangerous. In summer, after
fruiting, the occurrence of rainfall can significantly compromise the sugar content of the berry. The plant tends to absorb water.
This water will be distributed to the organs of the plant and reach the fruits. Occur, then an evacuation Sugar Berry,
which will be diluted and migrate to other organs. The consequence is the increased acidity of the berry.
Still occurring in the spring, excess rainfall are not advantageous to the vine. They drench the soil and cause increased
the relative humidity. Humidities high - over 80% - are not good for the vine, since they allow the emergence
fungi. Ideally, the spring is a mean temperature of 20 to 25 ° C and the occurrence of rain, alternating with periods of
sun.
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