improve insights by aggregating on farm trial data
TRANSCRIPT
Sponsored by XSInc
Improve Insights by Aggregating On-farm Trial Data
Precision Ag Insight Webinar
June 27, 2016
Sponsored by XSInc
Webcast Format
• You are muted.
• Please ask questions using the “Questions” box.• Click the red arrow to close/open
controls.
• Click the “plus” next to “Questions” if you don’t see the questions box.
• A recording of today’s webcast will be emailed to you.
Minimized Controls
Sponsored by XSInc
Speakers
PresenterDr. Chad GodseyOwner, Godsey Precision Ag
HostBen GistBusiness Development Analyst, XS Inc
Sponsored by XSInc
On-farm Research Is Important
• Answer questions important to growers˃ New products
˃ Precision ag practices
• Increase grower profitability
• Compliance, stewardship and sustainability
Sponsored by XSInc
Registration Question
• Which best describes how you have considered using aggregate results from on-farm trials?
Sponsored by XSInc
Results –Using On-Farm Trials
30%
10%
40%
20%
Have not considered
To account for varying field characteristics that influence site specific recommendations
To discover if a product works overall across the tested acreage
To draw conclusions for other producers/other fields
Sponsored by XSInc
3 Keys to Success
• Quality over Quantity
• Keep It Simple
• Reduce Noise
˃ You can never be 100% certain that yield differences in a trial are solely due to the treatments being evaluated.
˃ But you can manage sources of noise with good planning and analysis.
Sponsored by XSInc
3 Critical Pieces of a Trial Plan
• The Question
• The Layout
• The Data
Sponsored by XSInc
Define the question
• The first step is clearly defining a question that you want to answer with aggregate analysis.
˃ Is Product A better than Product B?
˃ If I increase or decrease the application rate of this
product by 10% in each management zone, how much
will my yield increase or decrease?
• Consider other factors that may influence trial outcome
˃ Management practices
˃ Hybrid or varietal differences
Sponsored by XSInc
3 Critical Pieces of a Trial Plan
• The Question
• The Layout
• The Data
Sponsored by XSInc
4 Considerations for Layout
1. Objective
2. Background information
3. Equipment and logistics
4. The “Three Rs” of on-farm trials
Sponsored by XSInc
An ExampleManagement Zones Elevation Gradient
Trial Boundary
Sponsored by XSInc
An Example:
Sponsored by XSInc
Using Productivity Zones
• Why?˃ Accounts for temporal variability˃ Provides a baseline to compare treatments against
Sponsored by XSInc
3 Critical Pieces of a Trial Plan
• The Question
• The Layout
• The Data
Sponsored by XSInc
Data Considerations for Aggregate Analysis• Standardization
• Most important part of on-farm trials. Makes or breaks a study!
• If a data layer appears to be important it needs to be collected on all fields
Sponsored by XSInc
The Why and When of Aggregate Analysis
• Why
• Aggregation enables the results of multiple single field on-farm trials where the same product or practice is being tested, to form broader conclusions from the insights of each individual trial.
• CONFIDENCE!!!
Sponsored by XSInc
Aggregate Analysis
• Knowing what to aggregate can be even more important
• Product A versus B
• What is the level of aggregation?
• Farm vs. Region
• Are you trying to answer a specific question for a specific farm?
• Seeding Rate Seeding Rate Checks
Compost Trial
Sponsored by XSInc
Registration question• Do you see a problem with aggregating data
across multiple producers?
Sponsored by XSInc
Results – Include multiple producers?
20%
40%
40%
No Not Sure Yes
Sponsored by XSInc
Aggregate Example – Fungicide trials
Fungicide Trial
Soil Types Elevation
- 2 corn fields in Ohio- Analyzing 3 known factors:
Sponsored by XSInc
What is AgVeritas?• Web-based yield analysis tool
• Analyzes all the factors that impact yield at the same time Planting choice / rate
Treatment choice / rate
Nutrient levels, soil types, elevation
Or any factor for which you have data
• Uses spatial statistics to detect and account for unidentified factors affecting yield
• Determines which factors impacted yield more and less
• Guides user to profitable adjustments in practices
Sponsored by XSInc
Aggregate Analysis Approach
• Start with more precision, end with more precision
• Removes spatial effect areas
• Based on each field’s unique “model”
• Examines the specific conditions under which different responses are seen down to a individual yield point level
Sponsored by XSInc
Aggregate Example – Fungicide trials
Fungicide Trial
Soil Types Elevation
- 2 corn fields in Ohio- Analyzing 3 known factors:
Sponsored by XSInc
Sponsored by XSInc
Sponsored by XSInc
Sponsored by XSInc
Sponsored by XSInc
Summary
• When and why of aggregation
• Plan Plan Plan!
• Standardization
Sponsored by XSInc
Thank You
Chad Godsey, PhD
Owner, Godsey Precision Ag
Phone: 970-630-7732
Email: [email protected]
Web: godseyag.com
Twitter: @godseyag