1/6/2003

Low Volume Irrigation and Crop Management Technologies

Value of SDI Combined with CMT

National Sales Meeting June 13-17, 2005

04/19/23

Identify Issue/NeedRelate Product or Feature that Solves IssueCommunicate Gains in productivity, performance or economicsConvert Benefits into gain or pain eliminatedTranslate into economic terms

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04/19/23

Economic Squeeze

Low Commodity Prices Increasing Input Costs

Jim Phene -- Netafim USAJim Phene -- Netafim USA

04/19/23

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04/19/23

Dr. Claude J Phene--Retired USDA-ARS Copyright 2005--used by permission

04/19/23

Identify Issue/NeedRelate Product or Feature that Solves IssueCommunicate Gains in productivity, performance or economicsConvert Benefits into gain or pain eliminatedTranslate into economic terms

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04/19/23

Discovery of High Frequency &Fertigation Effects

Average Yield @ 29 Tons 1st Year: 40% less water &

“N” Injected-- 48 Tons 2nd Year: 40% less water &

“N & P” Injected-- 75 Tons 3rd Year: “N-P-K” Injected--

110Tons

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04/19/23

Mike Bartolo--CSU ExtensionEqual Yields of 1500 Bags

Furrow requiring @6.9 ac-ft

Drip requiring @13 ac-in

@ Over 5 acre foot difference...

04/19/23

What Makes Drip Work? Low volume water application

Frequent irrigation: every day or several times a day

Application of nutrients through system

Wet only soil about roots

Low operating pressure: 7-15 psi

Highest efficiency & uniformity possible

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Water Use Efficiency

Evapotranspiration

or

ET

E

T

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Water Use Efficiency

Best Described as

Unit of Production/Unit of Water

E

TTypically see 30 to 50%

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Improved Yield, Quality & EarlinessOptimal balance of water, air and nutrients enhances top growth over root growth

Plant doesn’t wilt so more sugars for growth

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The Benefits of Drip- Fertility

P,KP,K

NONO33NONO33

PP

KK PP

Less NO3 loss due to deep percolation

Nutrients in solution &readily taken up by roots

Meet crop nutrient demands

NONO33

NONO33

NONO33

NONO33NONO33

NONO33

NONO33

PP KKKK

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Typical Irrigation Methodology

“TOO DRY”

“TOO WET”

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High Frequency Irrigation Theory

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Typical Fertility Methodology

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High Frequency Fertigation Theory

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High Frequency Fertigation Method

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04/19/23

The Benefits of Drip: Fertigation

Majority of InputsInjected

NONO33 NONO33

PP PP

KK KK

pHpH pHpH

CHEMIGATION

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+No evaporative losses+More Flexibility+Less Labor+NPK in root zone

SDI on FarmAdvantages

+Dry Soil Surface+Mitigates Weeds+Controlled Root Zone+Less Compaction+Permanent

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Lower Salt AccumulationsNo evaporative lossesMore FlexibilityMitigates Surface RunoffMitigates Deep Percolation

SDIMacroAdvantages

Dry Soil SurfaceDecreases HerbicidesDecreases ErosionHighest EfficiencyPermanent Solution

04/19/23

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1/6/2003

Crop Management Technologies

Creating Value or Why do our Customers Need It?

National Sales Meeting June 13-17, 2005

04/19/23

04/19/23

Continuous Measurement

12”

36”

Shallow sensor = when to start

Deep sensor = how long

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Used by permission--Dr. Claude Phene Copyright 2005

04/19/23

Available Volumetric

Water Content

100%

Available Water - What does it mean?Total Volumetric

Water Content

100%

50%

50%

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Used by permission--Dr. Claude Phene Copyright 2005

04/19/23

04/19/23

Used by permission--Dr. Claude Phene Copyright 2005

Volumetric vs. Matric Potential

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Used by permission--Dr. Claude Phene Copyright 2005

How We Use GP Sensor

04/19/23

Tools to Help with Scheduling

Soil’s Description Program to provide guidelines for AWC Consider effects of Matric Potential Consider effects of Osmotic Potential Leaching Fractions

04/19/23

SPAW

Soil - Plant - Atmosphere - WaterField & Pond Hydrology

SPAW is a daily hydrologic budget model for agricultural fields and ponds (wetlands, lagoons, ponds and reservoirs). Included are irrigation scheduling and soil nitrogen. Data input and results are graphical screens.

Developed By:Dr. Keith E. SaxtonUSDA - Agricultural Research Servicein cooperation withDepartment of Biological Systems EngineeringWashington State UniversityPullman, WA 99164-6120Voice: (509) 332-7277FAX: (509) 332-7277Email: ksaxton@wsu.eduHomepage: http://www.bsyse.wsu.edu/saxton

Register and Download SPAW

Revised: Mar 3, 2005

04/19/23

http://hydrolab.arsusda.gov/SPAW/Index.htm

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Soil Water Characteristic Estimates by Texture and Organic Matter for Hydrologic Solutions". By Dr. Keith Saxton Email: ksaxton@wsu.edu

04/19/23

Start-up of Automation (Shafter)

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High Frequency Irrigation (Shafter)

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Frequency of Irrigation (Shafter)

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Frequency of Irrigation (Daily)

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IrriWiseTM Weather Station

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High Frequency Fertigation Method

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Management by Exception

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Netafim assembled a professional team with the aim of creating a

reliable modular and open control platform

These products are the beginning of a new concept in which

automation products function as a decision support tool

Introduction

04/19/23

Summary NMC-64:User friendly controller consisting of: Large graphic display Flexible hardware structure Suitable for Irrigation and climate application

NMC-15: Advanced, simple irrigation controller. Suitable for small to mid-range applications

NetaJet dosing units: Ensures outstanding accuracy,

homogeneous solution and simplicity

04/19/23

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04/19/23

Economic Squeeze

Low Commodity Prices Increasing Input Costs

04/19/23

04/19/23

Economic Analysis

Spreadsheet from Kansas State University

Spreadsheet Showing Updated Inputs

04/19/23

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This template determines the economics of converting existing furrow-irrigated fields tocenter pivot sprinkler irrigation (CP) or subsurface drip irrigation (SDI) for corn production.

Field description and irrigation system estimatesVersion 2, modified by F.R. Lamm, 4-9-02

Total Suggested CP Suggested SDI Suggested

Field area, acres 160 160 125 125 155 155

Non-cropped field area (roads and access areas), acres 5 5

Cropped dryland area, acres (= Field area - Non-cropped field area - Irrigated area) 30 0Irrigation system investment cost, total $ $58,000.00 $45,114 $155,000.00 $122,016

Irrigation system investment cost, $/irrigated acre $464.00 $1,000.00Irrigation system life, years 25 25 25 15

Interest rate for system investment, % 8% 8%

Annual insurance rate, % of total system cost 0.25% 0.25% 0.25% 0.25%

Production cost estimates CP Suggested SDI Suggested

Total variable costs, $/acre (See CF Tab for details on suggested values) $342.91 $342.91 $318.19 $318.19

Additional SDI variable costs (+) or savings (-), $/acre Additional Costs $0.00 $0.00

Yield and revenue stream estimates CP Suggested SDI Suggested

Corn grain yield, bushels/acre Suggested 200 200 250 200

Corn selling price, $/bushel $2.50 $2.28

Net return to cropped dryland area of field ($/acre) $32.50 $32.50

Advantage* of CP over SDI, $/total field each year -$18,941.80 Negative value means SDI has positive advantage

$/acres each year -$118.39 * Advantage in Net returns to land and management

You may examine sensitivity to Main worksheet (tab) assumptions on three of the tabs listed below.

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