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Seed-lot sowing planner
Convert a target stand and measured seed-lot quality into kg/ha and total seed mass.
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Catch-can irrigation audit
Calculate lower-quarter uniformity, application rate and time to a target average depth.
01Enter your values
Runs in your browser02Catch-can irrigation audit
Runs in your browser
How it works
Calculate lower-quarter uniformity, application rate and time to a target average depth.
DUₗq = Lowest quarter ÷ Mean depth × 100; mm/h = mm × 60 ÷ min
Runs in your browser
Discovery source
Your data stays yours
Inputs are processed on this page and are never sent to a server.
About this tool
Use tool ↑Calculate lower-quarter uniformity, application rate and time to a target average depth.
For irrigation technicians: place identical cans on an equally spaced grid under fixed sprinklers. Enter 4–200 depths in mm, in multiples of four; use decimal dots and separate values with spaces. Lowest-quarter mean divided by overall mean gives DU. Runtime targets the average, not dry spots. No pivot weighting, runoff or crop-water recommendation.
How to use it
- Enter your values
Collected depths (mm) · Test duration · Target average depth
- Calculate / generate
Calculate lower-quarter uniformity, application rate and time to a target average depth.
- Result
72.727273%
Calculation method
DUₗq = Lowest quarter ÷ Mean depth × 100; mm/h = mm × 60 ÷ min
Catch-can irrigation audit
- Collected depths (mm)
- 8 8 10 10 12 12 14 14
- Test duration
- 20 min
- Target average depth
- 12 mm
Result
72.727273%
Frequently asked questions
Can a higher runtime fix poor uniformity?
No. It raises all collected depths without improving their ratio. Inspect the system separately.
Where does my data go?
Calculations run on your device. Form inputs are not sent to a server.