Quantitative information on agriculture and water use Maurits Voogt Chief Competence Center

Quantitative informationon agriculture and water use

Maurits VoogtChief Competence Center

Content

• Introduction• Technology• Regional scale information• Field scale data• Applications

INTRODUCTION

Introduction

eLEAF•Since 2000•Wageningen based•Global experience•Agricultural water management•Crop monitoring•PiMapping®

Experience on all continents

What is PiMapping® ?

Pixel Intelligence Mapping

PiMapping® technology is a toolbox of algorithms:•Based on satellite imagery and meteo data•Resulting in quantative data in mm, kg, °C, etc•Information on Water, Vegetation & Climate

Detailed quantitative

data

such asBiomass Production

[kg/ha]

eLEAF’s data components

  Data Components WATER Actual Evapotranspiration (E, T, interception),

precipitation, top soil moisture, water stress, storage change reservoirs, storage change aquifers, water productivity, water accounting, irrigation performance

VEGETATION Actual biomass production, Land cover, Fractional vegetation cover, Leaf Area Index LAI, fPAR, crop coefficient, crop yield, CO2 flux, sowing date, harvest date, physical land degradation, anthropogenic land degradation

CLIMATE Surface temperature, air temperature, air humidity, wind speed, cloud cover, solar radiation, sensible heat flux (H), latent heat flux (LE)

TECHNOLOGYHOW DOES IT WORK?

Energy balance

• SEBAL: Surface Energy Balance Algorithm for Land• Successor: ETLook

SEBAL

a

s

a

aspn

r

r

r

eecGR

ET241

d tttA P A RB io

albedo, temperature, cloud cover

Actual water useBiomass production and yield

Weather station dataVegetation index

REGIONAL INFORMATION

GSCP Yemen

• Groundwater and Soil Conservation Project• Objective: quantify ground water abstraction

Actual water use

How much water is used in 2006?

Actual water use

Overconsumption Yemen

• Average: 139 mm/year• Locally up to 1000 mm/year

FIELD SCALE DATA

FieldLook.com

FieldLook.com

Weekly updates:•Growth•Moisture•Minerals•Returns

Available in:•Spain, Canada, Russia, Ukraine, South Africa, Netherlands, Belgium

In field variability

25 March 25 May 7 July

23 July 12 Aug 4 Sept 8 Sept

Just NDVI...?• Smooth NDVI curve

• Biomass production varies from week to week [kg/ha/wk]

• Actual transpiration [mm/wk]

• Transpiration deficit [mm/wk]

Satellite imagery

eLEAF requires satellite imagery on:•High resolution•Large areas•Daily updates

APPLICATIONS

Applications

eLEAF’s data components can be used:•For monitoring•To advice•In automated applications

Monitor: water productivity2004-5

2005-6

2004-5

0.000

0.005

0.010

0.015

0 150 300 450 600 750liters water needed to produce 1 liter of wine

freq

uen

cy

Spatial distribution of good and bad practices.

Learn from each other and improve to the same level.

Advice: haulm killing

Van Es Rosetta: •Haulm killing is planned on September 5•Heterogeneous crops on September 4•Dosing of chemicals should vary as well

Applications: Irrigation planner

• PiMapping® technology measures and forecasts soil moisture

• Irrigation planner indicates when irrigation is required

Value Adding Partners

eLEAF is building a global networkof Value Adding Partners

•What can you do with quantative data?

Thank you for your attention

Maurits.Voogt@eLEAF.comChief Competence Center