This work was conducted to evaluate the effects of different sources of Ca2+, applied in the soil, on the content of this nutrient in the soil, in the leaves, and in the fruits; the physico-chemical attributes and the post-harvest conservation of grapes 'Vênus' (Vitis labrusca x V. vinifera). The experiment was carried out in a random block design, with four replications. It was used the following treatments: T1 - control (without application of Ca2+ in the soil); T2 - calcium chloride; T3 - gypsum; T4 - Nitrabor®; T5 - hydrated lime; and, T6 - cellulose paste. For all sources was applied the equivalent of 80 kg of Ca2+ ha-1, in three applications, every 21 days, starting on the leafing time. It was evaluated the content of nutrients in the soil, leaves and fruits. At maturity, four grape clusters were collected in each parcel, two of them were evaluated in the harvest and the other two ones were kept under ambient temperature and modified atmosphere, being evaluated after five days. In general, the sources of Ca2+ promoted higher content of Ca2+ in the soil, leaves and fruits. Nitrabor® and gypsum increased the average weight of berries. The sources of Ca2+ reduced the loss of weight, the abscission and the incidence of fruits rot in post-harvest.
Vitis labrusca x V. vinifera; translocation of Ca2+; fruit quality; post-harvest conservation
