Salinity builds up in the plant root zone during the irrigation season. This occurs in the rootzone of grapevines (above) and also Olives, Almonds, Strawberries, indeed any irrigated crop.
If heavy winter rain doesn’t fall, leaching and drainage will not occur and soil salinity may quickly increase to unsustainable levels. More symptoms of salt would be expected to be seen and a reduction in the quality and yield of the fruit is expected.
Recent research has shown that if you need to apply irrigation to leach the salts that have built up in your soil this is best applied during winter when the soil is full. Any extra water from irrigation is pushed down into the soil.
In the aftermath of this season dealing with the salinity that has built up in the soil is a major issue. If good winter rains do not flush the salt through the soil, irrigators may have to flush the soil with a winter irrigation.
Consider a soil test, and seek specialized advice.