It is one of the most important processes before the beginning of the harvest since it will determine when the picking of the grape can begin. We are talking about the sample collection, and we always do it on site. Sampling is essential to know the state of the vineyard before harvesting. If grapes are not ripe enough, it will have an impact on the quality of the wine, that is why controls in the vineyards are so important just before the harvest.
The technical staff of the vineyard of Cuatro Rayas Winery is in charge of this important task. In general, they use defined sampling patterns in order to ensure repetitions and that all of them are taken in the same places. That is to say, in the same vineyard terrains, in the same row of vines, around the same vine plants.
It is important to know that the samples are taken randomly, but the result of the tests will provide us with the same results as if they analysed the whole plot. This process is constantly performed, from veraison, usually in mid-August, until the end of the harvest. In the case of Cuatro Rayas Winery, we take samples on almost all of the 2,300 hectares of vineyard owned by our cooperative members. Once collected and accurately identified, the samples are transferred immediately to the Laboratory at Cuatro Rayas Winery.
When the grapes are in the Laboratory, firstly, they weigh the berries. Next, they crush them to obtain must, and they analyse the acidity and potential alcohol. If the tests meet the desired parameters, they send the results to the Vineyard Department, which will begin to schedule the harvesting of the grape from the plots that were given the green light, right away and as soon as possible.