IRRIG8-online: Travelling Irrigation User Guide

Version 0.0.9 – Distribution Uniformity Analysis with Compliant Collector Placement

Table of Contents

  1. Overview
  2. Getting Started
  3. Step-by-Step Usage Guide
  4. Understanding Your Results
  5. Technical Background
  6. CSV Data Upload Guide
  7. Troubleshooting
  8. Best Practices
  9. Professional Standards

Overview

The Travelling Irrigation Machine Calculator is designed for comprehensive evaluation of travelling irrigation systems including big guns, travelling irrigators, and boom systems. It provides professional-grade distribution uniformity analysis following industry standards with Code of Practice Section 4.5.13.5 compliant collector placement methodology.

Key Features

  • Complete System Evaluation – From farm setup to professional reporting
  • Individual Transect Speed Testing – Account for varying terrain conditions
  • Code of Practice Compliant Collector Placement – Mathematical collector positioning following Section 4.5.13.5
  • Distribution Uniformity Analysis – Using Equation 29 with overlap correction
  • Christiansen Uniformity Coefficient – Calculated using Equation 33
  • Transverse Uniformity Testing – Following Section 4.5.13.4 standards
  • Enhanced CSV Data Import – Intelligent matching with tolerance-based positioning
  • Professional Reporting – Comprehensive analysis with charts and recommendations
  • Multi-Lane Field Support – Rotation timing and efficiency calculations

Who Should Use This Tool

  • Irrigation Consultants – Professional system evaluations and audits
  • Agricultural Engineers – Design validation and performance analysis
  • Farm Managers – System optimization and efficiency monitoring
  • Researchers – Academic studies and field trials
  • Equipment Dealers – Demonstration of system performance

Getting Started

Before You Begin

Required Equipment:

  • Collection containers (uniform diameter, 250mm recommended)
  • Measuring cylinder for volume measurement
  • Stopwatch for speed tests
  • Pressure gauges
  • GPS or survey equipment for elevation data

Recommended Test Setup:

  • 3-6 transect lines perpendicular to travel direction
  • 11-21 collectors per transect line (extending beyond wetted radius)
  • Control collector for evaporation measurement
  • Weather monitoring during test period

Step-by-Step Usage Guide

Tab 1: Farm Information

Document your evaluation project details:

Farm & Property Information

  • Farm Name – Property being evaluated
  • Farm Owner/Manager – Primary contact person
  • Farm Location – Address or general location

Consultant & Evaluation Details

  • Consultant/Evaluator Name – Person conducting analysis
  • Organisation – Company or agency performing evaluation
  • Evaluation Date – When field testing was conducted

Best Practice: Complete documentation ensures professional reporting and helps track multiple evaluations across different sites and seasons.

Tab 2: Machine Information

Configure your travelling irrigation system parameters:

Equipment Information

  • Travelling Irrigator Machine – Specific model being tested
  • Machine Type – Select from:
    • Reel Machine (Hard Hose)
    • Traveller Machine (Soft Hose)
    • Self Propelled Reel Machine
  • Water Distribution System – Choose:
    • Big Gun
    • Fixed Boom
    • Rotating Boom

System Dimensions

  • Total Machine Flow (L/s) – Actual measured flow rate
  • Irrigation Strip Length (metres) – Travel path distance (Lt)
  • Irrigation Strip Width (metres) – Strip spacing between adjacent passes (E)
  • Lanes per Field – Number of parallel irrigation lanes
  • Sprinkler Wetted Radius (metres) – Distance from gun to edge of wetted pattern (rw)
  • Strip Overlap Percentage (%) – Calculated automatically or manual entry

Calculated Fields:

  • Irrigated Area per Run – Area covered in single pass
  • Total Irrigated Area – Complete field coverage including all lanes

Soil Information

  • Soil Type – Select appropriate soil classification
  • Soil Infiltration Rate (mm/hour) – Basic infiltration rate
  • Target Application Depth (mm) – Desired irrigation depth per pass

Important: Accurate strip width and wetted radius are critical for Code of Practice collector placement calculations and uniformity analysis.

Tab 3: Speed Test

Conduct speed testing for accurate application rate calculations:

Test Design

  • Number of Transect Lines – Select 3-6 lines for representative sampling
  • Individual speed tests allow for terrain variation analysis

Default Speed Test Complete for overall system characterization:

  • Speed Test Distance – Measured distance (typically 15-30m)
  • Speed Test Time – Enter minutes and seconds separately
  • Calculated Speed – Automatic calculation in m/min

Individual Transect Speed Tests Generate separate speed tests for each transect line:

  • Accounts for terrain variations, soil conditions, and operational factors
  • Provides more accurate uniformity analysis
  • Essential for large fields with varying conditions

Summary Calculations

  • Strip Traverse Time – Time to complete single strip
  • Full Rotation Time – Time to complete all lanes in field
  • Average Speed – Mean of all transect speeds

Pro Tip: Individual transect speeds are crucial for accurate application rate calculations, especially on undulating terrain or varying soil conditions.

Tab 4: Pressure & Flow Analysis

Monitor system hydraulic performance:

Pressure Measurements

  • Pump Discharge Pressure (kPa) – Pressure at pump outlet
  • Machine Inlet Pressure (kPa) – Pressure at machine inlet (Pi)
  • Gun/Sprinkler Pressure (kPa) – Pressure at distribution system (Ps)

Flow Analysis

  • Measured Total Flow (L/s) – Actual system flow rate
  • Design Flow Rate (L/s) – Manufacturer specifications
  • System Pressure Drop – Calculated pressure losses

Measurement Tips:

  • Take pressure readings during steady-state operation
  • Use calibrated digital pressure gauges
  • Record simultaneously with flow measurements
  • Note any pressure fluctuations or irregularities

Tab 5: Energy & Cost Analysis

Calculate operating economics:

Power Consumption

  • Pump Motor Power (kW) – Rated motor power
  • Measured Power Draw (kW) – Actual consumption during operation
  • Electricity Rate ($/kWh) – Local utility rates

Operating Costs

  • Annual Operating Hours – Estimated yearly irrigation time
  • Water Cost ($/m³) – Cost per cubic metre of water
  • Annual Energy Cost – Automatically calculated

Economic Analysis: Understanding operating costs helps justify system improvements and compare different irrigation technologies.

Tab 6: Collectors

ENHANCED COLLECTOR PLACEMENT SYSTEM

Set up and conduct transverse uniformity testing using two sophisticated methods:

Collector Setup Method Selection

Code of Practice Method (Recommended)

  • Automatic Mathematical Calculation – Follows Section 4.5.13.5 standards
  • Precise Positioning – Ensures half strip width is exact multiple of spacing
  • Coverage Validation – Automatically verifies wetted radius coverage
  • Compliance Checking – Warns if spacing doesn’t divide evenly

Manual Count Method

  • Traditional Approach – User selects collector count directly
  • Flexible Spacing – Any spacing value accepted
  • Custom Configurations – Supports non-standard layouts

Code of Practice Method Configuration

Collector Spacing Options:

  • 2.0m – High density, very detailed patterns
  • 2.5m – Standard high resolution
  • 3.0m – Most common spacing
  • 4.0m – Medium resolution
  • 5.0m – Coarse resolution, large systems
  • Custom – Enter specific spacing (1.0-6.0m range)

Center Collector Options:

  • With Center Collector – Odd number of collectors, center at 0m
  • No Center Collector – Even number of collectors, symmetric about center

Automatic Calculations:

  • Collector Count – Mathematically determined
  • Coverage Verification – Ensures adequate coverage of wetted radius
  • Spacing Validation – Warns if chosen spacing creates positioning errors

Manual Method Configuration

Preset Options:

  • 11, 13, 15, 17, 21 collectors per line
  • Custom count (any number 5-50)

Spacing Configuration:

  • Manual entry of collector spacing
  • No automatic validation

Test Configuration (Both Methods)

Collection Parameters:

  • Collector Diameter (mm) – Opening diameter (250mm standard)
  • Test Duration (hours) – Total test time (typically 4-6 hours)

Evaporation Control (Section 5.2.2) Essential for accurate depth measurements:

  • Control Collector Initial Volume (mL) – Pre-test water volume
  • Control Collector Final Volume (mL) – Post-test remaining volume
  • Control Collector Diameter (mm) – Must match test collectors
  • Collection Start/End Time – Precise timing for evaporation calculation

Data Entry Options

Manual Entry:

  1. Select collector setup method
  2. Configure spacing and count (Code of Practice) or select count (Manual)
  3. Click “Calculate Collector Layout” (Code of Practice only)
  4. Click “Generate Transect Input Fields”
  5. Enter volume and measurement time for each collector
  6. Use “Generate Sample Data” for testing purposes

Enhanced CSV Upload:

  • Intelligent Method Detection – Automatically determines if data follows Code of Practice
  • Tolerance-Based Matching – Matches CSV positions to calculated positions with 1m tolerance
  • Hybrid Approach – Tries Code of Practice first, falls back to CSV-based positioning
  • Custom Positioning – Uses exact CSV distances when standard methods don’t match

File Format: Transect Line, Distance from Centre (m), Volume (mL), Measurement Time (min)

  • Supports files with or without headers
  • Custom collector counts auto-detected
  • Enhanced security validation

Data Quality Tips

  • Measure all collectors within 30 minutes if possible
  • Record measurement time for each collector
  • Use consistent measurement techniques
  • Note any unusual conditions or disturbances
  • Verify calculated collector positions match field layout

Tab 7: Results

Calculate and interpret distribution uniformity:

Key Metrics Calculated

  • Distribution Uniformity (DU) – Using Equation 29 with overlap correction
  • Christiansen Uniformity Coefficient (CU) – Using Equation 33
  • Mean Application Depth – With overlap methodology applied
  • Standard Deviation – Measure of variability
  • Coefficient of Variation – Relative variability percentage
  • Low Quarter Mean – Average of lowest 25% of measurements

Individual Transect Results

  • Separate DU calculation for each transect line
  • Identifies spatial variations in performance
  • Helps locate problematic areas

Statistical Analysis

  • Complete statistical summary
  • Minimum and maximum application depths
  • Number of measurements and coverage area

Transverse Profile Charts

  • Application Depth Profile – Shows water distribution pattern
  • Application Rate Profile – Compares rates to soil infiltration
  • Visual identification of uniformity issues

Chart Features:

  • Color-coded transect lines
  • Soil infiltration rate overlay (when applicable)
  • Mean application line reference
  • Centre line identification

Tab 8: Report Generation

Create professional documentation:

Available Report Functions

  • Generate Report – Comprehensive HTML report with methodology
  • Export Data (CSV) – Complete dataset with all calculations
  • Export Charts – PNG images for external use
  • Print Report – Formatted for PDF creation

Report Contents

  • Complete farm and machine information
  • Code of Practice methodology explanation
  • Collector placement verification
  • Key results summary
  • Individual transect analysis
  • Statistical summary
  • Professional recommendations

Understanding Your Results

Distribution Uniformity Classifications

Distribution Uniformity (DU)

  • Excellent: >0.94 (>94%) – Outstanding performance
  • Very Good: 0.87-0.94 (87-94%) – Good commercial performance
  • Good: 0.75-0.87 (75-87%) – Acceptable for most crops
  • Fair: 0.62-0.75 (62-75%) – Marginal performance
  • Poor: 0.50-0.62 (50-62%) – Needs improvement
  • Unacceptable: <0.50 (<50%) – Requires immediate attention

Christiansen Uniformity Coefficient (CU)

  • Excellent: >0.95 (>95%) – Exceptional uniformity
  • Very Good: 0.90-0.95 (90-95%) – Very good performance
  • Good: 0.80-0.90 (80-90%) – Good commercial standard
  • Fair: 0.70-0.80 (70-80%) – Acceptable uniformity
  • Poor: 0.60-0.70 (60-70%) – Below acceptable standards
  • Unacceptable: <0.60 (<60%) – Major uniformity problems

Application Rate Analysis

Soil Infiltration Comparison

  • Green Zone: Application rate ≤ soil infiltration rate
  • Yellow Zone: Application rate 1-2x soil infiltration rate
  • Red Zone: Application rate >2x soil infiltration rate

Interpretation:

  • Green Zone = No runoff expected
  • Yellow Zone = Potential for minor runoff, monitor closely
  • Red Zone = High runoff risk, reduce speed or change nozzles

Code of Practice Collector Placement Methodology

The calculator uses mathematically precise collector placement:

  1. Mathematical Positioning – Half strip width must be exact multiple of collector spacing
  2. Coverage Verification – Ensures collectors extend to wetted radius
  3. Spacing Validation – Warns if spacing creates positioning errors >10cm
  4. Automatic Optimization – Suggests alternative spacings for better coverage

Why This Matters:

  • Ensures consistent, repeatable test layouts
  • Eliminates positioning errors and artifacts
  • Provides standardized methodology across evaluations
  • Enables accurate comparison between different systems

Enhanced Overlap Methodology

The calculator uses physically realistic overlap correction:

  1. Outside Collectors – Water volumes transferred to appropriate inside collectors
  2. Inside Collectors – Receive additional water from overlapping patterns
  3. Final Calculations – Based only on inside collectors (within wetted strip)
  4. Mathematical Precision – Uses exact collector positions from Code of Practice method

Advantages:

  • Provides realistic field performance assessment
  • Accounts for actual water distribution patterns
  • Eliminates artifacts from traditional calculation methods
  • Ensures compliance with professional standards

Technical Background

Code of Practice Section 4.5.13.5 Implementation

Mathematical Foundation:

Half Strip Width = E/2
Required Positions Each Side = round(E/2 ÷ spacing)
Total Collectors = (Positions Each Side × 2) + Center Option
Verification: |Calculated Half Width - Actual Half Width| ≤ 0.1m

Spacing Validation:

  • System calculates if chosen spacing creates exact positioning
  • Warns if tolerance exceeded (>10cm difference)
  • Suggests optimal spacing alternatives
  • Ensures coverage extends to wetted radius

Coverage Requirements:

Maximum Distance = Positions Each Side × Spacing
Coverage Check: Maximum Distance ≥ Wetted Radius

Calculation Standards

Based on established irrigation evaluation standards:

Key Equations Used

  • Equation 29: Distribution Uniformity with overlap correction
  • Equation 33: Christiansen Uniformity Coefficient
  • Equation 47: Instantaneous application rate calculation
  • Section 4.5.13.4: Transverse uniformity testing procedures
  • Section 4.5.13.5: Collector placement methodology
  • Section 5.2.2: Evaporation correction methodology

Distribution Uniformity Calculation

DU = (Low Quarter Mean / Overall Mean) × 100%

Where:

  • Low Quarter Mean = Average of lowest 25% of measurements
  • Overall Mean = Average of all measurements (inside collectors only)

Christiansen Uniformity Coefficient

CU = (1 - (Σ|xi - x̄|) / (n × x̄)) × 100%

Where:

  • xi = Individual measurement
  • x̄ = Mean of all measurements
  • n = Number of measurements

Application Rate Calculation

Application Rate = (Application Depth / Application Time) × 60

Where application time considers:

  • Machine traverse speed (individual transect speeds when available)
  • Wetted diameter coverage
  • Specific timing for each transect

Enhanced Overlap Correction Method

Physical Process

  1. Identify Overlap Zones – Areas receiving water from adjacent strips
  2. Transfer Water Volumes – Outside collector water moved to inside collectors based on spacing
  3. Apply Evaporation Correction – Account for losses during collection
  4. Calculate Final Depths – Combined water from primary and overlap sources

Mathematical Implementation:

  • Uses exact collector positions from Code of Practice method
  • Determines overlap zones based on strip width and collector spacing
  • Matches outside collectors to inside positions using mathematical relationships
  • Preserves water conservation (total volume remains constant)

CSV Data Upload Guide

Enhanced Upload System

The new CSV upload system features intelligent method detection and tolerance-based matching:

File Format Requirements

Required Columns (in order)

  1. Transect Line – Integer (1, 2, 3, etc.)
  2. Distance from Centre (m) – Decimal values (positive and negative)
  3. Volume (mL) – Measured collector volume
  4. Measurement Time (min) – Time for individual measurement

Example CSV Format

Transect Line,Distance from Centre (m),Volume (mL),Measurement Time (min)
1,-15.0,125.5,5.2
1,-10.0,145.2,5.0
1,-5.0,165.8,4.8
1,0.0,180.0,5.1
1,5.0,170.5,5.3
2,-15.0,130.2,5.1

Intelligent Processing Methods

1. Code of Practice Detection

  • Analyzes CSV data for compliance with Section 4.5.13.5
  • Checks if spacing creates exact half-width multiples
  • Verifies collector count matches mathematical requirements
  • Sets up Code of Practice method automatically if compliant

2. Tolerance-Based Matching

  • Matches CSV positions to calculated positions within 1m tolerance
  • Accounts for field measurement variations
  • Provides detailed matching reports
  • Warns about positioning discrepancies

3. CSV-Based Positioning

  • Falls back to exact CSV distances when standard methods don’t match
  • Creates custom collector layout based on uploaded positions
  • Maintains data integrity while accommodating non-standard layouts

Upload Process

  1. File Preparation – Ensure proper format and validation
  2. Method Detection – System analyzes data for Code of Practice compliance
  3. Automatic Setup – Configures collector method based on analysis
  4. Data Population – Fills input fields using best matching algorithm
  5. Verification – Review populated data and matching reports

File Requirements

  • Format: CSV (.csv extension)
  • Size Limit: 5MB maximum
  • Headers: Optional (auto-detected)
  • Encoding: UTF-8 recommended

Common Upload Issues and Solutions

Code of Practice Compliance Issues

  • Problem: CSV spacing doesn’t create exact half-width multiples
  • Solution: System automatically suggests optimal spacing alternatives
  • Fallback: Uses tolerance-based matching or CSV-based positioning

Data Validation Errors

  • Transect Lines: Must be integers 1-10
  • Distances: Must be between -100m and +100m
  • Volumes: Must be 0-10,000 mL
  • Times: Must be 0-1440 minutes

Import Mismatches

  • Tolerance Exceeded: CSV positions >1m from calculated positions
  • Solution: Review field layout, consider different spacing
  • Alternative: Use CSV-based positioning for non-standard layouts

Troubleshooting

Code of Practice Setup Issues

Spacing Validation Warnings

  • Cause: Selected spacing doesn’t divide evenly into half strip width
  • Example: 3m spacing with 35m strip width (17.5m ÷ 3m = 5.83 positions)
  • Solution: Use suggested alternative spacing (e.g., 3.5m for exact positioning)
  • Alternative: Accept warning if <10cm tolerance acceptable

Coverage Inadequacy

  • Cause: Collector positions don’t extend to wetted radius
  • Solution: Increase number of positions or reduce spacing
  • Check: Verify wetted radius measurement accuracy

Mathematical Errors

  • Cause: Invalid strip width or wetted radius values
  • Solution: Verify machine configuration measurements
  • Range Check: Strip width 10-200m, wetted radius 5-100m

Enhanced CSV Upload Issues

Method Detection Failures

  • Cause: CSV data doesn’t match any standard method
  • Solution: System falls back to CSV-based positioning
  • Alternative: Manually configure collector method before upload

Tolerance Matching Problems

  • Cause: Field measurements vary >1m from calculated positions
  • Solution: Review field layout precision
  • Option: Increase tolerance or use CSV-based positioning

Data Inconsistencies

  • Cause: Varying collector counts between transects
  • Solution: Verify field setup consistency
  • Check: Ensure all transects use same collector layout

Traditional Issues

Low Distribution Uniformity

Possible Causes:

  • Incorrect operating pressure
  • Worn nozzles or gun components
  • Inappropriate travel speed
  • Poor field setup or alignment
  • Wind effects during testing
  • Incorrect collector placement

Solutions:

  • Check manufacturer pressure recommendations
  • Inspect and replace worn components
  • Adjust travel speed for conditions
  • Verify Code of Practice collector positioning
  • Conduct tests during calm weather

High Application Rates

Causes:

  • Travel speed too fast for conditions
  • Incorrect nozzle selection
  • System pressure too high
  • Mismatched gun/nozzle combination

Solutions:

  • Reduce travel speed
  • Select appropriate nozzle size
  • Adjust operating pressure
  • Consult manufacturer recommendations

Inconsistent Results Between Transects

Causes:

  • Varying travel speeds
  • Uneven terrain effects
  • Wind direction changes
  • Equipment malfunction during test
  • Inconsistent collector positioning

Solutions:

  • Conduct individual speed tests
  • Account for terrain variations
  • Monitor weather conditions
  • Check equipment operation
  • Use Code of Practice method for consistent positioning

Best Practices

Code of Practice Implementation

Pre-Test Setup

  • Verify Strip Width Measurement – Critical for accurate collector positioning
  • Confirm Wetted Radius – Ensure adequate coverage calculation
  • Calculate Optimal Spacing – Use system recommendations for best positioning
  • Field Layout Precision – Implement calculated positions accurately

Collector Placement Verification

  • Mathematical Check – Verify positions match calculated values
  • Coverage Confirmation – Ensure collectors extend to wetted radius
  • Symmetry Verification – Check equal spacing both sides of center
  • Documentation – Record actual positions for validation

Field Testing Procedures

Pre-Test Preparation

  • Equipment Check – Verify all collectors are clean and uniform
  • Weather Monitoring – Avoid testing during windy conditions
  • System Inspection – Check gun, nozzles, and pressure systems
  • Code of Practice Layout – Implement precise collector positioning

During Testing

  • Consistent Timing – Start and stop collection simultaneously
  • Regular Monitoring – Check system operation throughout test
  • Data Recording – Document any unusual conditions
  • Position Verification – Confirm collectors remain in calculated positions

Post-Test Analysis

  • Prompt Measurement – Measure collectors as quickly as possible
  • Data Verification – Check for obvious errors or outliers
  • Documentation – Record all test conditions and observations
  • Methodology Validation – Confirm Code of Practice compliance

Optimization Strategies

Improving Distribution Uniformity

Pressure Management:

  • Maintain manufacturer recommended pressures
  • Avoid excessive pressure that reduces pattern quality
  • Check for pressure fluctuations during operation

Speed Optimization:

  • Balance application depth with infiltration rate
  • Consider soil conditions and slope
  • Adjust for wind effects and evaporation

System Maintenance:

  • Regular nozzle inspection and replacement
  • Proper gun alignment and leveling
  • Hose and reel maintenance

Layout Optimization:

  • Use Code of Practice method for consistent results
  • Optimize spacing for field dimensions
  • Verify coverage extends to pattern edges

Economic Optimization

Energy Efficiency:

  • Match pump size to system requirements
  • Optimize operating pressures
  • Consider variable frequency drives

Water Use Efficiency:

  • Minimize over-application through better uniformity
  • Reduce runoff through appropriate application rates
  • Time irrigation to minimize evaporation losses

Seasonal Considerations

Wind Effects

  • Spring/Fall – Often more challenging conditions
  • Summer – Generally calmer, but higher evaporation
  • Morning vs. Evening – Consider local wind patterns

Crop Stage

  • Early Season – Lower application rates acceptable
  • Mid-Season – Peak uniformity requirements
  • Late Season – May accept lower uniformity

Soil Conditions

  • Wet Soil – Lower infiltration rates, runoff risk
  • Dry Soil – Higher infiltration, crusting potential
  • Frozen Soil – Winter testing limitations

Professional Standards

Industry Benchmarks

Acceptable Performance Levels

Commercial Agriculture:

  • Minimum DU: 0.75 (75%)
  • Target DU: 0.85+ (85%+)
  • Minimum CU: 0.80 (80%)
  • Target CU: 0.90+ (90%+)

High-Value Crops:

  • Minimum DU: 0.85 (85%)
  • Target DU: 0.90+ (90%+)
  • Minimum CU: 0.85 (85%)
  • Target CU: 0.95+ (95%+)

Research Applications:

  • Minimum DU: 0.90 (90%)
  • Target DU: 0.95+ (95%+)
  • Minimum CU: 0.90 (90%)
  • Target CU: 0.98+ (98%+)

Code of Practice Compliance

Methodology Requirements

  • Section 4.5.13.5: Mathematical collector placement
  • Spacing Validation: Half strip width as exact multiple
  • Coverage Verification: Extension to wetted radius
  • Documentation: Complete positioning records

Quality Assurance

  • Positioning Accuracy: ±10cm tolerance maximum
  • Coverage Adequacy: Collectors extend to pattern edge
  • Mathematical Consistency: Reproducible calculations
  • Standard Compliance: Following established procedures

Regulatory Compliance

Water Use Efficiency Standards Many regions require minimum efficiency standards:

  • Water conservation programs
  • Environmental regulations
  • Irrigation district requirements
  • Grant program compliance

Documentation Requirements Professional evaluations should include:

  • Complete methodology documentation
  • Code of Practice compliance verification
  • Quality assurance procedures
  • Statistical analysis results
  • Professional recommendations

Certification and Training

Professional Development

  • Irrigation evaluation certification programs
  • Equipment manufacturer training
  • University extension courses
  • Professional association memberships

Continuing Education

  • New technology updates
  • Regulation changes
  • Research developments
  • Best practice evolution

Support and Resources

For technical support or questions about this calculator:

  • Plugin Author: Dan Bloomer / LandWISE
  • Website: https://www.landwise.org.nz
  • Standards Reference: Irrigation System Evaluation Code of Practice (Section 4.5)

Additional Resources

  • Manufacturer technical specifications
  • University extension publications
  • Professional irrigation associations
  • Local agricultural advisors

Document Version: 0.0.9
Last Updated: 2024
Compatibility: WordPress 5.0+ | PHP 7.4+

This user guide provides comprehensive instructions for professional travelling irrigation system evaluation using Code of Practice Section 4.5.13.5 compliant collector placement methodology. Always verify measurements and consult qualified professionals for critical irrigation decisions. The enhanced collector placement and overlap methodology used in this calculator provides mathematically precise, physically realistic results that account for actual field water distribution patterns.