This readme.txt file was generated on 20240606 by Bryan Runck Recommended citation for the data: Ewing, P.M. & Runck, B.C. (2024). USDA-ARS Phenocart RGB Imagery Collected in Brookings, SD in 2021. doi: ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset USDA-ARS Phenocart RGB Imagery Collected in Brookings, SD in 2021 2. Author Information Principal Investigator Contact Information Name: Bryan C. Runck Institution: University of Minnesota Address: 248 Ruttan Hall, 1991 Buford Ave N, St. Paul, Mn 55108 Email: runck014@umn.edu ORCID: 0000-0002-7015-1539 Co-investigator Contact Information Name: Patrick Ewing Institution: USDA-ARS Address: 105 Carrigan Drive, Leahy Room 212, Burlington, VT 05405 Email: patrick.ewing@usda.gov ORCID: 0000-0001-8515-1884 3. Date published or finalized for release: 06/06/2024 4. Date of data collection: 20210708 to 20211025 5. Geographic location of data collection (where was data collected?): Brookings, SD, USA (44.351 N, 96.805 W) 6. Information about funding sources that supported the collection of the data: USDA-ARS 7. Overview of the data (abstract): Data were collected from an experimental field in 2021 at the Eastern South Dakota Soil and Water Research Farm in Brookings, SD, USA (44.351 N, 96.805 W). The experiment consisted of a number of oat (Avena sativa L.) variety-by-seeding-rate treatments that were further divided into medium red clover planting treatments in a strip-block design with four replicates and a plot size of 6 m by 6 m. Oat treatments crossed variety (Reins, Natty, Sumo) and target oat population (140, 220, and 320 plants m-2) in 19 cm, drilled rows; red clover showed no responses to these oat treatments. Red clover treatments compared clover planted concurrently with oats (“underseeded”) on April 28, 2021; planted after oat harvest (“post-harvest”) on August 12, 2021; or no clover (“fallow”). Red clover was drilled at 1.25 cm depth at a rate of 8.2 kg ha-1 at a row spacing of 19 cm. An herbicide application of 210 g ha-1 sethoxydim (Poast, BASF Crop Protection, Research Triangle Park, North Carolina, USA), which selectively targets monocots, was applied on August 20, 2021, to control volunteer oats. A total of 720 RGB JPEG images were collected over six dates. The dates span the emergence of the post-harvest red clover planting to the first killing frost: August 21st, September 9th, September 29th, October 5th, October 15th, and October 25th. Images were collected by a Canon PowerShot ELPH 190 IS at a height of 2.5 m in the center of each plot using a phenotyping cart (White & Conley, 2013). To mirror the simplest use by researchers and practitioners, the camera was configured in full default, automatic mode, including ISO (a standard setting for controlling image darkness) and white balance and a 74-degree horizontal field of view. One image was taken from a representative location per plot on each date. -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: Creative Commons Attriubtion 4.0 Internation https://creativecommons.org/licenses/by/4.0/ 2. Links to publications that cite or use the data: 3. Was data derived from another source? No 4. Terms of Use: Data Repository for the U of Minnesota (DRUM) By using these files, users agree to the Terms of Use. https://conservancy.umn.edu/pages/policies/#drum-terms-of-use --------------------- DATA & FILE OVERVIEW --------------------- Images (.jpg) are organized into folders for date of imagery acquisition in D.M.YYYY format. Additional details about data and files are as follows: Formatting Year YYYY Year images taken Date MM/DD Date images were taken Location NA What field at research farm the images were taken in Method NA What was used to take picture Subject NA What crop was being captured Folder Specific Information Year Date Location Method Subject 2021 7/8 B-13 Imagery Cart/Canon Oat/Clover/Soybean 2021 7/22 B-13 Imagery Cart/Canon Soybean 2021 8/21 B-13 Imagery Cart/Canon Clover/Soybean 2021 9/9 B-13 Imagery Cart/Canon Clover/Soybean 2021 9/29 B-13 Imagery Cart/Canon Clover/Soybean 2021 10/05 B-13 Imagery Cart/Canon Clover/Soybean 2021 10/15 B-13 Imagery Cart/Canon Clover/Soybean On 10/15 2021, Images taken from 1:09pm to 2:34pm on a cloudy, windy day. The replicates were all removed from the file after transfer from the camera card. On 10/25 2021, Images taken from 1:32pm to 3:03pm on a partly cloudy, slightly windy day. -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data: Images were collected by a Canon PowerShot ELPH 190 IS at a height of 2.5 m in the center of each plot using a phenotyping cart (White & Conley, 2013). To mirror the simplest use by researchers and practitioners, the camera was configured in full default, automatic mode, including ISO (a standard setting for controlling image darkness) and white balance and a 74-degree horizontal field of view. One image was taken from a representative location per plot on each date. 2. Methods for processing the data: data are original images 3. Instrument- or software-specific information needed to interpret the data: Canon PowerShot ELPH 190 IS 4. Standards and calibration information, if appropriate: N/A, images are digital number values 5. Environmental/experimental conditions: Between 10AM and 4PM on rain-free days over a period of no longer than two hours. Cloud cover, wind speed and direction, and temperature were variable across dates. See descriptions above about specific dates. 6. Describe any quality-assurance procedures performed on the data: A phenocart was used to capture the images to ensure a standard height and orientation. This was constructed from four bicycle wheels connected with square steel tubing. An arm extended forward three feet from the front of the cart to support the camera. The phenocart was always oriented southward to ensure the cart did not cast shadows in images. 7. People involved with sample collection, processing, analysis and/or submission: Luke Rosen, Jennifer Johnson, Patrick Ewing, Bryan Runck, Brooke Wright Naming convention: date (mm.dd.yyy) - date of image capture plot (ABBC.JPG) - plot information for a split-block design. A = block number (1-4); BB = column identifier (oat treatment, 01-10); C = row identifier (clover treatment, A-C)