Certified Sommelier Practice Exam

What kind of soil predominantly characterizes the Gisborne region?

1. Sandy alluvial over gravel

2. Clay and chalk

3. Loamy soil

4. Volcanic soil

The correct answer is: Sandy alluvial over gravel

The Gisborne region is predominantly characterized by sandy alluvial soils over gravel deposits. This type of soil structure plays a significant role in viticulture, as it promotes good drainage, which is essential for healthy vine growth. Sandy soils tend to warm up quickly in the spring, allowing for early bud break, while the associated gravel helps to retain moisture yet encourages roots to dig deep into the soil, accessing nutrients and water during drier periods. Sandy alluvial soils are typically fertile, often enriched by river sediments, which can contribute to vibrant fruit characteristics in wines produced in this area. This is particularly important in regions like Gisborne, where a warm climate combined with these soil types can create ideal conditions for grape varieties such as Chardonnay and Sauvignon Blanc. The other soil types mentioned do not accurately reflect the predominant character of the Gisborne region. For instance, clay and chalk are more commonly found in regions known for different stylistic wine offerings, and while loamy soil can support growth, it does not specify the unique characteristics found in Gisborne. Similarly, volcanic soils are associated with other regions known for their distinctive terroir, such as some parts of the Central Otago.