WSET DIPLOMA D1 CERTIFICATION
SCRIPT 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
◍ Where is precision viticulture most widely used?.
Answer: California and Australia
◍ What is semi-carbonic maceration?.
Answer: More common in the region-No carbon dioxide added to the
fermentation vat. -Whole clusters are crushed under the weight of those
above and begin fermenting normally. -The carbon dioxide released by
standard fermentation blankets the whole berries above.-Those berries begin
to ferment internally. -Favored among producers of Beaujolais nouveau as it
tends to suppress the dominant yeast notes in an extremely young
wine.-Also implemented by many producers in the northern crus.
◍ What to terpenes give to a wine.
Answer: Floral and citrus aromas
◍ What is a grape variety with many clones?.
Answer: Pinot noir
◍ What is the difference between a vegetative cycle and balanced cycle?.
Answer: vegetative - too much shading, dense canopy, not enough fruit and
growth is not in balance.
◍ Preferred aspect in cool climates in northern hemisphere.
Answer: South facing- warmer- aiding the ripening process
◍ Name 6 pests for the growing environment..
Answer: PhylloxeraNematodesGrape mothsSpider mitesBirdsMammals
◍ Where do prompt buds form?.
, Answer: Main shoot
◍ AXR1 (=ARG1).
Answer: AXR1 is a rootstock historically associated with challenges in
viticulture due to its susceptibility to specific biotypes of Phylloxera.
Initially favored for its adaptability to various soils and climates, AXR1's
vulnerability led to significant vineyard failures, particularly in California
during the late 20th century. This case underscores the critical importance of
selecting rootstocks with proven resistance to pests and compatibility with
regional conditions.
◍ Phomopsis.
Answer: Fungi: Phomopsis viticolaBasal buds lose viabilityInfected canes
whiten and snap off easilyLeaf: small dark spots after rainfallOverwinters in
dormant budsIntroduced by infected planting materialDamp vineyards,
rainy, cold springsPrevention- good plant material- fungicides- sodium
arsenite (legal issues)
◍ The pulp of what varieties is not colorless?.
Answer: Teinturier varieties
◍ What is the offspring of 2 vines from the same species called?.
Answer: Cross
◍ what are advantages of PET? disadvantages?.
Answer: light, tough, inexpensive, recyclable- special filling equipment
needed, only for "cheap" wines
◍ Early budding varieties.
Answer: ChardonnayPinot NoirMerlotGrenache ((buds early, ripens late)
◍ what factors should be considered when determining the most appropriate
training and trellising method?.
Answer: vine vigor- topography- need for mechanization
◍ Are lateral shoots near the base of the main shoot desirable?.
Answer: No because they can impede air flow and shade fruit
, ◍ Symptoms ofphylloxerainfestation.
Answer: Die of droughtRoots covered with insects (ovalyellow-brown
dots)Nodosities (whitish or yellowish)near root tipTuberosities (swellings)
on olderrootsPale green leaf galls
◍ What does pierce's disease do to a vine?.
Answer: Kills it
◍ How many buds to leave on vine at winter pruning (the charge)?.
Answer: Count # of ideal shoots in previous seasonRemove and weight
canes, then divide by30-40Young vines < 8 yr = more budsOld vines 5-15%
more buds
◍ What is Preparation 500.
Answer: Horn Manure
◍ What supports (feeds) initial shoot growth?.
Answer: Carbohydrates stored in roots, trunk, and branches
◍ Disadvantagesof clay soils.
Answer: Take longer to heat up in spring and tend tobe colder all year round
(coz water);Swell when they absorb water and shrinkwhen dry leading to
cracking and waterloss;Sticky when wet;Wet clay soils' structure
deteriorates whenworked
◍ When is harvest?.
Answer: Sept-Oct
◍ what is the temperature range for a warm ferment? what type of wine does it
produce?.
Answer: 26-32C- powerful reds; high tannin & color extraction
◍ what affects the SO2 free in must?.
Answer: pH (larger [ ] at lower pH) ??
◍ what are the ideal temperature range and pH range for ML?.
Answer: 18-22C3.3-3.5
SCRIPT 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
◍ Where is precision viticulture most widely used?.
Answer: California and Australia
◍ What is semi-carbonic maceration?.
Answer: More common in the region-No carbon dioxide added to the
fermentation vat. -Whole clusters are crushed under the weight of those
above and begin fermenting normally. -The carbon dioxide released by
standard fermentation blankets the whole berries above.-Those berries begin
to ferment internally. -Favored among producers of Beaujolais nouveau as it
tends to suppress the dominant yeast notes in an extremely young
wine.-Also implemented by many producers in the northern crus.
◍ What to terpenes give to a wine.
Answer: Floral and citrus aromas
◍ What is a grape variety with many clones?.
Answer: Pinot noir
◍ What is the difference between a vegetative cycle and balanced cycle?.
Answer: vegetative - too much shading, dense canopy, not enough fruit and
growth is not in balance.
◍ Preferred aspect in cool climates in northern hemisphere.
Answer: South facing- warmer- aiding the ripening process
◍ Name 6 pests for the growing environment..
Answer: PhylloxeraNematodesGrape mothsSpider mitesBirdsMammals
◍ Where do prompt buds form?.
, Answer: Main shoot
◍ AXR1 (=ARG1).
Answer: AXR1 is a rootstock historically associated with challenges in
viticulture due to its susceptibility to specific biotypes of Phylloxera.
Initially favored for its adaptability to various soils and climates, AXR1's
vulnerability led to significant vineyard failures, particularly in California
during the late 20th century. This case underscores the critical importance of
selecting rootstocks with proven resistance to pests and compatibility with
regional conditions.
◍ Phomopsis.
Answer: Fungi: Phomopsis viticolaBasal buds lose viabilityInfected canes
whiten and snap off easilyLeaf: small dark spots after rainfallOverwinters in
dormant budsIntroduced by infected planting materialDamp vineyards,
rainy, cold springsPrevention- good plant material- fungicides- sodium
arsenite (legal issues)
◍ The pulp of what varieties is not colorless?.
Answer: Teinturier varieties
◍ What is the offspring of 2 vines from the same species called?.
Answer: Cross
◍ what are advantages of PET? disadvantages?.
Answer: light, tough, inexpensive, recyclable- special filling equipment
needed, only for "cheap" wines
◍ Early budding varieties.
Answer: ChardonnayPinot NoirMerlotGrenache ((buds early, ripens late)
◍ what factors should be considered when determining the most appropriate
training and trellising method?.
Answer: vine vigor- topography- need for mechanization
◍ Are lateral shoots near the base of the main shoot desirable?.
Answer: No because they can impede air flow and shade fruit
, ◍ Symptoms ofphylloxerainfestation.
Answer: Die of droughtRoots covered with insects (ovalyellow-brown
dots)Nodosities (whitish or yellowish)near root tipTuberosities (swellings)
on olderrootsPale green leaf galls
◍ What does pierce's disease do to a vine?.
Answer: Kills it
◍ How many buds to leave on vine at winter pruning (the charge)?.
Answer: Count # of ideal shoots in previous seasonRemove and weight
canes, then divide by30-40Young vines < 8 yr = more budsOld vines 5-15%
more buds
◍ What is Preparation 500.
Answer: Horn Manure
◍ What supports (feeds) initial shoot growth?.
Answer: Carbohydrates stored in roots, trunk, and branches
◍ Disadvantagesof clay soils.
Answer: Take longer to heat up in spring and tend tobe colder all year round
(coz water);Swell when they absorb water and shrinkwhen dry leading to
cracking and waterloss;Sticky when wet;Wet clay soils' structure
deteriorates whenworked
◍ When is harvest?.
Answer: Sept-Oct
◍ what is the temperature range for a warm ferment? what type of wine does it
produce?.
Answer: 26-32C- powerful reds; high tannin & color extraction
◍ what affects the SO2 free in must?.
Answer: pH (larger [ ] at lower pH) ??
◍ what are the ideal temperature range and pH range for ML?.
Answer: 18-22C3.3-3.5
