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Product Specification

Product Name:Plot Stand Count with Uniformity
Product SKU:71201-00
Revision Date:2024-05-22

Product Overview

Description

Plot Stand Count with Uniformity provides plot-level measurements of early season crop performance including measurements of stand count and related uniformity measurements. This product utilizes a precision-aligned orthomosaic derived from high-resolution RGB imagery. Specific deliverables for this product are crop dependent.

Recommended Use Cases

  • Plant Population
  • Seedling Emergence
  • Seed Vigor
  • Plant Uniformity
  • Stand Quality
  • Plant Growth
  • Plant Size
  • Canopy Development
  • Weed Pressure
  • Yield Potential
  • Plot Quality
  • Plot Deactivation
  • Area of Interest Variability

Supported Crops

  • Corn/Maize
  • Soybean
  • Cotton
  • Canola/OSR

Deliverables Summary

  • Mosaic RGB Precision Aligned
  • Plot Stand Count with Uniformity

Requirements

General Requirements

  • Requires FieldAgent Enterprise License (61006-##) or Enterprise Analytics Upload/Export Surcharge (71010-09)
  • Requires Plot Project Setup (71200-00)
  • Imagery collected following all "Data Capture Requirements"
  • Imagery uploaded to the FieldAgent Field created by Plot Project Setup (71200-00)
  • Order Analytics submitted for Plot Stand Count with Uniformity for uploaded Survey
  • Row spacing greater than 10 inches (25 centimeters)
  • Planting information provided: Seeding rate, Row spacing, Number or rows per plot

Data Capture Requirements

Imagery Type

  • RGB

Ground Sample Distance

  • Less than 0.5cm

Timing by Crop

Crop Timing/Growth StagePlant Size
Corn/MaizeV2-V3 or V4-V5Greater than 4 in. (10 cm) across, from leaf tip to leaf tip
SoybeanV2-V3Greater than 4 in. (10 cm) across, from leaf tip to leaf tip
Cotton5-6 Leaf StageGreater than 4 in. (10 cm) across, from leaf tip to leaf tip
Small Grain--
Canola/OSR5-6 Leaf StageGreater than 4 in. (10 cm) across, from leaf tip to leaf tip
Deliverables depend on growth stage, plant size, and planting density.
Growth stage for Corn is defined using the leaf collar method.
See Plot Canopy Cover (71204-00) for early-season emergence and uniformity for Small Grain.

Flight Specifications

SensorAltitudeSpeedOverlapFlight DirectionBufferHeadingGimbal PitchTerrain Informed
Double 4K (Ag+)50ft (16m)6mph (3m/s)75%Any40ft (12m)Forward-90° (Nadir)On
Double 4K (Multispectral)50ft (16m)6mph (3m/s)75%Any40ft (12m)Forward-90° (Nadir)On
Phantom 4 Pro50ft (16m)4mph (2m/s)75%Any40ft (12m)Forward-90° (Nadir)On
Phantom 4 RTK50ft (16m)4mph (2m/s)75%Any40ft (12m)Forward-90° (Nadir)On
Zenmuse X4S50ft (16m)4mph (2m/s)75%Any40ft (12m)Forward-90° (Nadir)On
Zenmuse X5S50ft (16m)4mph (2m/s)75%Any40ft (12m)Forward-90° (Nadir)On
6X70ft (21m)6mph (3m/s)75%Any40ft (12m)Forward-90° (Nadir)On
6X Thermal70ft (21m)6mph (3m/s)75%Any40ft (12m)Forward-90° (Nadir)On
Sony a7R IV70ft (21m)6mph (3m/s)75%Any40ft (12m)Forward-90° (Nadir)On
65R100ft (30m)10mph (5m/s)75%Any40ft (12m)Forward-90° (Nadir)On
Zenmuse P1 (35mm)70ft (21m)7mph (3m/s)70%Any40ft (12m)Forward-90° (Nadir)On
Mavic 2 Pro50ft (16m)3mph (1.5m/s)75%Any40ft (12m)Forward-90° (Nadir)On
Mavic 3 Enterprise50ft (16m)6mph (3m/s)75%Any40ft (12m)Forward-90° (Nadir)On
Mavic 3 Multispectral50ft (16m)6mph (3m/s)75%Any40ft (12m)Forward-90° (Nadir)On

Environmental Conditions

Lighting
Imagery should be captured between the time of 2 hours after sunrise and 2 hours before sunset. Consistent lighting conditions required for best results, including avoidance of hard shadows cast over the field which cause bright spots and dark spots in the dataset.
Wind
Wind conditions should be within the specified limits of the aircraft or system being used to carry the imaging sensor.
Precipitation
There should be no active precipitation during imagery capture.

Deliverables

Analytics

AnalyticImageryRGB
Mosaic RGB Precision Aligned (82001-01)
Plot Stand Count with Uniformity (83001-00)

Analytic by Crop

AnalyticCorn/MaizeSoybeanCottonSmall GrainCanola/OSR
Mosaic RGB Precision Aligned (82001-01)
Plot Stand Count with Uniformity (83001-00)
Plot Stand Count with Uniformity - Individual
Plot Stand Count with Uniformity - Rowfill
"Plot Stand Count with Uniformity - Individual" is delivered when data capture for Corn occurs at V2-V3 growth stage (based on leaf collar method) and with non-overlapping plants. "Plot Stand Count with Uniformity - Rowfill" is delivered when data capture for Corn occurs at V4-V5 growth stage (based on leaf collar method) or when plants are overlapping.
See Plot Canopy Cover (71204-00) for early-season emergence and uniformity for Small Grain.

Mosaic RGB Precision Aligned (82001-01)

Description

A Visual Red, Green, and Blue (RGB) multi-band mosaic provided at native resolution and georeferenced.

Deliverable List

DeliverableFormatDescription
Mosaic: RGB (Preliminary)*GeoTiffVisual RGB multi-band, native resolution, and non-georeferenced raster
Mosaic: RGBGeoTiffVisual RGB multi-band, native resolution, and georeferenced raster
* Delivered only in some cases

Plot Stand Count with Uniformity (83001-00)

Description

Provides either absolute plant count or a relative plant count using percent rowfill based on planting population as well as related uniformity statistics including plant population, gap analysis, seed spacing, singulation/skips/multiples, canopy cover, and weed cover. Data are summarized and provided on a per plot basis.

Deliverable List

DeliverableFormatDescription
Plot Stand Count with Uniformity - Individual*Shapefile, GeoJSON, CSVPlot-level summary statistics
Plot Stand Count with Uniformity - Rowfill*Shapefile, GeoJSON, CSVPlot-level summary statistics
* Delivered only in some cases

Data Attributes

Plot Stand Count with Uniformity - Individual
AttributeDescriptionUnits MetricUnits Imperial
Seeding Rate – User ProvidedSeeding rate (user provided input)count per hectarecount per acre
Plant DensityStand count of the plot measured in plants per acre/hectarecount per hectarecount per acre
EmergenceEmergence percentagepercentpercent
Seed Spacing – ExpectedSeed Spacing expected based on the user inputs of seeding rate and row spacingcmin
Seed Spacing – MedianSeed spacing median. Metric is calculated from spacing of emerged plants (If a seeding rate is not provided, the median seed spacing will be substituted for calculations requiring this input) cmin
Seed Spacing – AverageSeed spacing average. Metric is calculated from spacing of emerged plantscmin
Seed Spacing – Std. DevSeed spacing standard deviation. Metric is calculated from spacing of emerged plantscmin
Seed Spacing – CoVSeed spacing coefficient of variation. Metric is calculated from spacing of emerged plantsunitlessunitless
SingulationEstimated percentage of singulation. Singles are plants that are > 0.5x and < 1.75x the expected seed spacing away from any other plantpercentpercent
SkipsEstimated percentage of skips. Skips are gaps between plants that are > 1.75x and < 5x the expected seed spacingpercentpercent
MultiplesEstimated percentage of multiples. Multiples are plants that are closer than 0.5x the expected seed spacing to another planpercentpercent
Gaps > 5x Seed SpacingEstimated percentage of gaps that are more than 5x the expected seed spacingpercentpercent
Plant Surface Area – MedianPlant surface area mediancm^2in^2
Plant Surface Area – AveragePlant surface area averagecm^2in^2
Plant Surface Area – Std. Dev.Plant surface area standard deviationcm^2in^2
Plant Surface Area – CoVPlant surface area coefficient of variationunitlessunitless
Plant Width – MedianPlant width mediancmin
Plant Width – AveragePlant width averagecmin
Plant Width – Std. Dev.Plant width standard deviationcmin
Plant Width – CoVPlant width coefficient of variationunitlessunitless
Crop Canopy CoverPercent of the plot covered by vegetation on the rowpercentpercent
Total Vegetation CoverPercent of the plot covered by all vegetationpercentpercent
Weed CoverVegetation between rows ("Total Vegetation Cover" - "Crop Canopy Cover")percentpercent
Absolute Plant CountNumber of plants counted in the plotcountcount
Row "X" – Plant CountNumber of plants on the row specified by id Xcountcount
Row "X" – EmergencePercent of vegetation on the row specified by id Xpercentpercent
Plot Stand Count with Uniformity - Rowfill
AttributeDescriptionUnits MetricUnits Imperial
Seeding Rate – User ProvidedSeeding rate (user provided input)count per hectarecount per acre
Plant DensityStand count of the plot measured in plants per acre/hectarecount per hectarecount per acre
EmergenceEmergence percentagepercentpercent
RowfillPercent of the row intersecting vegetation onlypercentpercent
Gaps > 5x Seed SpacingEstimated percentage of gaps that are more than 5x the expected seed spacingpercentpercent
Row Width – MedianPlant width mediancmin
Row Width – AveragePlant width averagecmin
Row Width – Std. Dev.Plant width standard deviationcmin
Row Width – CoVPlant width coefficient of variationunitlessunitless
Crop Canopy CoverPercent of the plot covered by vegetation on the rowpercentpercent
Crop Canopy ClosurePercent of the canopy closure (only considers areas where crop is present)percentpercent
Total Vegetation CoverPercent of the plot covered by all vegetationpercentpercent
Weed CoverVegetation between rows ("Total Vegetation Cover" - "Crop Canopy Cover")percentpercent
Estimated Plant CountEstimated number of plants counted in the plotcountcount
Row "X" – Estimated CountNumber of plants on the row specified by id Xcountcount
Row "X" – EmergencePercent of vegetation on the row specified by id Xpercentpercent