V. labrusca
The species V. labrusca is used to make such wines as Concord, Delaware, Catawba, it is suitable to humid summers, but is susceptible to rot and disease. Concord represents almost 80% of all production in North America from this grape. This species is also not very deeply rooted and requires a high degree of fertility. Alkaline soils are highly detrimental to this species and therefore texture classes must be chosen to avoid alkalinity. This species is not suited to semiarid climates and prefers high levels of rainfall and a short growing season. These factors were used to consider the specific constraints and factors of this species for the multi-criteria evaluation.
Constraints
The climate zone for this species in the GVRD was considered to be either a very wet maritime, or a moist maritime. In the module Reclass, the value of 1 was given to these zones and a value of 0 to every other zone.
The soil texture for this species was considered to be peat, silt and clay, and sedimentary silt and clay, because of its preference for high fertility in soils. These zones would likely have a high colloid count and organic matter content. The value of 1 was given to these zones and a value of 0 was given to every other zone.
The images produced are:
Factor
The distance from water was chosen because of the preferable textural class. Due to the poor drainage of clays and peat this grape species would likely have to be further away from water to avoid drowning.
