“site specific.” This means that, although certain regional climatic conditions
exist, each vineyard is a “microclimate” unto itself. The ready availability
of data on a vineyard’s microclimate is essential to serious viticulture.
Prior to planting the first vines at Crossing Vineyards, a
computerized weather station was installed. Each day, the computer records
information on rainfall, temperature, dates of frost, hours of sunshine.
Each day, the database of information on the microclimate grows.
This data can be valuable in many ways. For example, the effectiveness
of spray programs can be improved by identifying periods when disease
pressure is historically highest. Tracking temperatures can help
predict likely harvest times by allowing the calculation of “growing
(i.e. days above a certain temperature that will encourage fruit
development and ripening). Tracking frost dates and number of consecutive
a certain temperature can help predict and prevent winter injury.
It can also provide the vineyard manager with information about which
varieties will grow best in the microclimate.