grapevine irrigation management n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Grapevine Irrigation Management PowerPoint Presentation
Download Presentation
Grapevine Irrigation Management

Loading in 2 Seconds...

play fullscreen
1 / 28

Grapevine Irrigation Management - PowerPoint PPT Presentation


  • 186 Views
  • Uploaded on

Grapevine Irrigation Management. Dr. Robert L. Wample April 1, 2004. Management ( Webster’s Dictionary). To handle or direct with a degree of skill To treat with care To alter by manipulation To achieve one’s purpose (goal). 273 0 32. 273K 0C 32F. Irrigation Management No More RDI!.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Grapevine Irrigation Management' - amalia


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
grapevine irrigation management
Grapevine Irrigation Management

Dr. Robert L. Wample

April 1, 2004

management webster s dictionary
Management(Webster’s Dictionary)
  • To handle or direct with a degree of skill
  • To treat with care
  • To alter by manipulation
  • To achieve one’s purpose (goal)

273 0 32

273K 0C 32F

irrigation management no more rdi
Irrigation ManagementNo More RDI!

Eto x Kc = Etc

Soil moisture

Water potential (Plant water status)

+

Information

Knowledge

Wisdom

grapevine irrigation management1
Grapevine IrrigationManagement

Plant Water Status

And

Physiological Response

Evaporative Demand

Eto x Kc = Etc

Soil Moisture Management

grapevine irrigation management2
Grapevine Irrigation Management

Plant Water Status

Pressure chamber

Shoot growth rate

Leaf temperature

infrared and air temperature measurement
InfraRed and Air TemperatureMeasurement
  • Objective:
    • Simultaneous measurement of leaf and air temperature
    • Supplement or replacement of pressure chamber
    • Geolocation of data
    • Fast (~ 10 seconds)
grapevine irrigation management3
Grapevine Irrigation Management

Eto (class “A” pan or calculated)

Published information

Weather Stations

Eto x Kc = Etc

(expenditures)

Crop Coefficient (Kc)

Published Information

Larry Williams Technique (% shade area at solar noon X 0.017) + cover crop if present

grapevine irrigation management4
Grapevine Irrigation Management

Neutron Probe

Capacitance Probes

Tensiometers (?)

Soil Sampling Tube

Shovel

Steel Rod

Soil Moisture

(bank account)

grapevine water requirements
Grapevine Water Requirements
  • When:
    • budbreak to flowering (<5%)
    • flowering to fruit set (15%)
    • fruit set to veraison (60%)
    • veraison to harvest (20%)
    • harvest to leaf fall (dormancy) (3-5%)
  • How much Irrigation:
    • On a worldwide basis 0-30 acre-inches
grapevine irrigation management5
Grapevine Irrigation Management
  • Developing an irrigation plan
    • setting goals for your vineyard
    • acquire information
      • Eto,
      • Kc,
      • precipitation(total and seasonal)
      • know your soils (variability)depth, profile, water holding capacity, infiltration rate (This is the vines “water bank account”)
      • evaluate your water supply (reliability, quality)
      • Plant water status
grapevine irrigation management6
Grapevine Irrigation Management
  • Developing an irrigation plan (cont.)
    • know your vines
      • rootstock, root system
      • general health (nematodes, phylloxera, etc.)
    • understand the “banking system”
      • deposits (precipitation and irrigation)
      • withdrawals (evaporation, transpiration)
      • bank charges (bound water, deep percolation, impenetrable barriers)
grapevine irrigation management7
Grapevine Irrigation Management
  • Developing an irrigation plan (cont.)
    • understand the “economics of water use”
      • changes in seasonal withdrawals
      • benefits or costs of low balance
      • the ability to increase your bank balance
        • timeliness
        • quantity
    • UNDERSTAND YOUR IRRIGATION SYSTEM
grapevine irrigation management8
Grapevine Irrigation Management
  • THERE ARE NO SILVER BULLETS
  • THIS IS A HIGHER LEVEL OF MANAGEMENT
  • REQUIRES AN UNDERSTANDING OF THE ANNUAL CYCLES OF GRAPEVINE GROWTH, DEVELOPMENT AND PHYSIOLOGY
  • GRAPEVINES ARE VERY TOLERANT OF WATER STRESS
nir spectroscopy and winemaking

NIR SPECTROSCOPYAND WINEMAKING

BRIMROSE CORP OF AMERICA

Baltimore, Maryland USA

what is nir

Radio

Cosmic

Gamma

X

IR

Micro

UHF

UV

Short

Long

Medium

Ultra violet

Vis

Infrared

Near

Mid

=

1

400

750

2.500

16.000

1.000.000 nm

What is NIR?
  • Small portion of electromagnetic spectrum (700-2500 nm)
  • No sample preparation -- direct measurement on bulk sample
  • Non-destructive
what is nir1
What is NIR?
  • Simultaneously measurements for different properties within second(s)
  • Can measure chemical and physical properties
  • Good for all sample types --solids, liquids, powders, slurries, pastes, gels, gases, etc.
how aotf acousto optic tunable filter scans nir spectrum

Monochrome light

Zero order beam

Monochrome light

How AOTF Acousto-Optic Tunable Filter scans NIR spectrum

Scans extremely rapidly by the very nature of piezoelectric pulsing

White light

RF MHz

why acousto optic tunable filter aotf spectrometer
Why Acousto Optic Tunable Filter(AOTF) Spectrometer?

AOTF AnalyzerVSTraditional Scanning Monochromators

  • Scanning speed: 30-40 spectra per second (16,000 wav/sec)
  • Solid state, no moving parts
  • High signal to noise
  • No Wavelength re-calibration required
  • Capability to measure in Ambient light
  • Miniature, robust design
  • Scanning speed: 1 spectra per second
  • MANY moving parts
  • Good signal to noise
  • Wavelength re-calibration required frequently
  • Ambient light can be problem
  • Laboratory based BenchTop design
application calibration
APPLICATION CALIBRATION
  • Collect samples
  • Acquire spectra with spectrometer
  • Test samples to acquire reference data
  • Add spectra and reference data to model
  • Create prediction program
advantages of aotf nir analyzers
Advantages of AOTF-NIR Analyzers
  • Portable: vineyard and/or cellar
  • Ease of use
  • Real-time Simultaneous

measurements

of different properties

  • Connectivity with GPS
  • Downloads to computer system via WIRELESS ETHERNET connection automatically
  • Economical, year round use
  • Allows for individual research and calibration
current applications for ripening grapes
CURRENT APPLICATIONS FOR RIPENING GRAPES
  • Measures sugar (degrees Brix)
  • Measures pH
  • Measures titratable acid
  • Displays results as a frequency distribution
potential applications for ripening grapes
POTENTIAL APPLICATIONS FOR RIPENING GRAPES
  • Gross phenolics
  • Tannins
  • Anthocyanins/ color
  • Berry texture, cell wall breakdown
  • Fructose/glucose ratio
  • Seed hardness