the vineyard plan is a best compromise that integrates key aspects of the following characteristics;...
TRANSCRIPT
The vineyard plan is a best compromise that integrates key aspects of the following characteristics;TopographySurface water and airflowSoil and variety characteristicsVine capacityVineyard designIrrigation designEfficient vineyard management
Introduction
1. Determine surface water plan2. Define block areas between drainage lines
of similar soil types and readily available water (RAW) scores
3. Create a block and row design that is efficient, practical and viticulturally sound
4. Define a road access system around the vineyard
5. Allocate varieties to appropriate blocks6. Vineyard layout and preparation
Stages of developing a vineyard design:
Water will always flow to the lowest point, by the most direct route
Soil erosion increased by soil velocity (not volume)
Intense water run-off needs to be controlledAir drainage just as importantCold air sinks to the lowest point like water
Frost riskGood airflow also important to prevent
humidity build-up in summer
Surface water and airflow
Firstly, define natural waterwaysIsolate them from development
Avoid depressions in the vineyardWater will collect and damage vinesTrellis wires difficult to tension across a
depressionBest idea for planting slopes is 1-3% grade
Provides drainage for water and airAvoids machinery difficulties seen with steeper
slopesPlant grass in the inter-row areasIf vineyards are set up correctly, erosion is
rare
Surface water and airflow
Blocks need to be defined on the basis of soil type and RAW to reduce variability
Soil available water should not vary by more than 10mm within a blockIf so, then separate irrigation
Frost risk? (Spring and Autumn)Largely, row orientation depends on;
RegionCultivarEnd product
Block areas and row orientation
However;While N/S rows generally recommended,
Works in cool climates (<20°C MTWM)For warmer regions, move toward E/W
Avoid severe heat stress in the afternoon, esp. white fruit
Wind – ‘double edged sword’Cause damage and increase ET, yet reduce frost risk
and dry vineyardTrellis choice, and foliage wire placement critical
Row length – long as possible (to a point....)300-400m efficient – less turning and #end assemblies500-600m are best on flat land with big strainersCentral water sub-mains best up to 200m each way
Block areas and row orientation
Ensure ‘all-weather’ access to vineyardGravel is best for roads and headlands (cost trade off)
Roads MUST be well drained to avoid standing water Significantly damage roads very quickly
Headlands must be at least 9-12 meters wideLonger machineryTie-Back systems?Obstacles requiring additional space?
Headlands must also fit with block layoutRows and intermediates and plants need to line up in
“the matrix”
Road access and headlands
Vital decision!Budburst and ripening
Frost prone areas best for late burst and early ripening
Although variety must be chosen first on region, good design can minimise damage
AspectCooler delicate varieties (PNN) grown in cooler
southern partsHeat loving varieties best grown with more of a
western aspect
Allocating varieties to blocks
Row orientationUse E/W for delicate varieties in warmer
climatesUse N/S for robust varieties in cooler climates
Soil type and RAWVigorous (SYR/RRI)best in low fertility soil
In hot areas higher fertility is possible (water control)
Allocating varieties to blocks
Soil RAW (mm) Most suitable varieties
Low (<40mm) Syrah, Riesling, Cabernet Franc
Medium (40-50mm) Cabernet Sauvignon, Malbec, Sauvignon Blanc, Chardonnay, Pinot noir (table)
High (50-60mm) Merlot, Pinot noir (sparkling)
Very High (>60mm) Semillon
Includes a multitude of factorsAll can severely impact (+/-) vine capacityAll of these must be considered and managed for
optimum yield and qualityRow spacing and trellis design – trade-off
Want: large # well spaced shootsNarrow single trellis – wide divided canopyHigher capacity vines, plant further apart!Close planted vines achieve extra early yield –
expensiveWider spaced vines catch up quickly – less expensive
Ensure intermediates are no more than 6-7m apartWire sag can be a major problem
Block and row design
Block size and shapeRectangles are preferredRows ending in hard angles are difficultIrrigation zones need to be <6 ha to avoid
expensive piping systemsGenerally larger blocks are more economical
To a point!
Block and row design
Vineyard planning also requires an irrigation system designer and the following information is essential;Water needs per yearPeak water requirement per weekDripper spacing and output
Vineyard irrigation
Water resourcesWater needs can be calculated using historical
weather information and soil / ET dataVines in hot arid regions can use 5-6 ML / ha /
yearWhile as low as 1 ML / ha / year in cooler
areasEnsure that water resource consent is
available, and legally “water-tight” so you have water when required
The bore should be drilled down to account for changing water levels
Vineyard irrigation
Peak volume requirementsResource consents require vineyards volume
restrictionsOften hourly rate rather than weekly volumeDifficulties?
Normal vine spacing return peak water demand values of 100-180 L/vine/week
At least 20 hours of irrigation/week required4-5 shifts per weekAttempt also cheaper off-peak electricity
Vineyard irrigation
Irrigation system designDrip, overhead, furrow irrigation?Mains, sub-mains, risers, under-vine tubing6 ha maximum size for economy (fluid flow....)Similar block sizes – for pump efficiency
Or reducing size blocks further from pump – headloss
Easy access to maintain valves and submainsPressure compensating drippers required if not
completely flatDesign should be able to deliver water in 60%
of time ($)Include soil type, water distribution for dripper
spacing
Vineyard irrigation
System componentsSufficient and quality water filtration – disk
filter at boreFailsafe final filtration – screen filters at pumpFertigationController – multi-channel system to control
water useControl valves – solenoid valve per blockSystem control – now modern internet / pc
systems
Vineyard irrigation
Can be useful on exposed sitesHowever, protection is only up to 12 times the
heightShadeUtilisation of valuable vineyard landPrevailing wind may be seasonalBIRDS!
If using windbreaks go deciduous – poplar bestCare – root competition
Ensure wind filtering rather than dense barrierTurbulence!
Windbreaks
Operational factors consume >10% of usable vineyard areaMore in undulating situationsMore when vineyard designed incorrectlyNeed to be minimised for efficiency and
productivity
Vineyard operation
Works area – the final stage – heart of the operationManagers officeStaff amenities roomToilets and change roomsMachinery shedsWorkshopChemical storeWaste sumpFilling stationWash down areaParkingTruck loading areaEasy access – roads and blocks
Vineyard operation
Other considerationsElectricityRunning waterWater heatingInternetSafety compliance stationsStorageStaff accommodation?
Vineyard operation