Narrative Agronomic Log — Resource Gradient Experiment
Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use
A narrative log of the agronomic operations performed on the Resource Gradient Experiment.
This datatable is part of the Agronomic Management of the Resource Gradient Experiment dataset.
A log of the agronomic management activities on the Resource Gradient Experiment. A “browsable” interface to the aglog is available at https://aglog.kbs.msu.edu; select “Resource Gradient” under the “Areas” tab.
Note
| Experiment: | Resource Gradient Experiment |
| Data available from: | May 2000 to July 2020 |
| Dataset: | KBS084 |
| Datatable ID: | KBS084-001.25 |
| Repository link: | http://doi.org/10.6073/pasta/a7fa8e36847074f2a7d7cb644360ed2f |
| Personnel: |
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| Last Updated | 2024-03-18 |
| Variate | Description | Units |
|---|---|---|
| obs date | observation date | |
| Comment | description of the agronomic operations performed | |
| author | author of this observation | |
| source | the aglog entry source |
| Protocols |
|---|
Data Excerpt
| obs_date | comment | author | source |
|---|---|---|---|
| 2025-08-08 | Sprayed LTER N-Rate (Irrigated and rainfed) and LTER Lysimeter field with RoundUp PowerMax 3 at 40 oz/A. Application done post harvest as a general burndown. Application began at 12:00 pm and concluded at 1:30 pm. REI is 4 hours, safe reentry at 5:30 pm on Friday August 8, 2025. See attached spray report for weather data. | Ethan Rocklin | https://aglog.kbs.msu.edu/observations/6701 |
| 2025-07-24 | Harvested wheat from the LTER Main Site N-rate Study (Resource Gradient, Irrigated and non-Irrigated). Non Irrigated side was harvested 7/22/25, irrigated side on 7/23/25 and finished plots where shelters were on 7/24/25. T8nt plots were harvested on 7/23/25. For each plot of wheat (5' wide) were harvested for yield using the Kincaid plot combine. Moisture content and weight were determined by using the on-board Mirus software. Grab samples of the grain from each plot was collected and tested on the Dicky john moisture tester at the FSC as well. Equipment Used: Kincaid plot combine and small grain truck. | Jarrod Rhoades | https://aglog.kbs.msu.edu/observations/6685 |
| 2025-06-24 | Irrigated winter wheat in the LTER Irrigated Resource Gradient Experiment (Irrigated N-rate Study). Equipment used: Irrigated with the Valley 8000 Linear Irrigation System. Amount of water applied: 1.26 inch of water was applied (as measured by six rain gauges). Irrigation system delay setting: 16; Irrigation pressure: 21 psi; Pressure at the pump: 50 psi. Time of application was between 10:45 a.m. - 1:10 p.m. Weather conditions at 10:40 a.m. Clear and Sunny , 88.2°F, wind 3-5 mph (3m high 5 minute average wind speed was 3.85 mph) wind gust 12.93 mph, from the South West, relative humidity 65.9%. Weather conditions at 1:00 p.m. Partly Cloudy, 89.2°F, wind 5-7 mph (3m high 5 minute average wind speed was 5.43 mph), wind gust 12.93 mph, from the West, relative humidity 59%. Meter reading at the start of irrigation event: 6740097.0; Meter reading at the end of irrigation event: 6749816.9; Total gallon of water used in this irrigation event (as measure by a in-line water meter): A minimum amount of 9,719.9 gallons of water was applied at time of irrigation.; (The meter was froze up and not calculating gallons shortly after turning on. The gallon amount should be much higher. Average 423 gallons per minute (as measure by a in-line water meter). | Jarrod Rhoades | https://aglog.kbs.msu.edu/observations/6657 |
| 2025-06-19 | Irrigated winter wheat in the LTER Irrigated Resource Gradient Experiment (Irrigated N-rate Study). Equipment used: Irrigated with the Valley 8000 Linear Irrigation System. Amount of water applied: 1.1 inch of water was applied (as measured by six rain gauges). Irrigation system delay setting: 19.5; Irrigation pressure: 21 psi; Pressure at the pump: 50 psi. Time of application was between 12:41 p.m. - 2:44 p.m. Weather conditions at 12:00 p.m. Mostly cloudy, 67.4°F, wind 8 mph (3m high 5 minute average wind speed was 7.89 mph), wind gust 14.78 mph, from the Northwest, relative humidity 84.7%. Weather conditions at 2:48 p.m. Partly sunny, 80.0°F, wind 4-6 mph (average wind speed was 4 mph), wind gust 8 mph, from the North, relative humidity 66.0%. - This data taken from Weather Underground Station in Hickory Corners, the LTER weather station was down at the time. Meter reading at the start of irrigation event: 6681132.0; Meter reading at the end of irrigation event: 6740097.6; Total gallon of water used in this irrigation event (as measure by a in-line water meter): A minimum amount of 58,965.6 gallons of water was applied at time of irrigation. Average 424 gallons per minute (as measure by a in-line water meter). | Ethan Rocklin | https://aglog.kbs.msu.edu/observations/6653 |
| 2025-06-16 | Irrigated winter wheat in the LTER Irrigated Resource Gradient Experiment (Irrigated N-rate Study). Equipment used: Irrigated with the Valley 8000 Linear Irrigation System. Amount of water applied: 1.12 inch of water was applied (as measured by six rain gauges). Irrigation system delay setting: 19.5; Irrigation pressure: 22 psi; Pressure at the pump: 50 psi. Time of application was between 10:01 a.m. - 12:01 p.m. Weather conditions at 9:30 a.m. Sunny, 72.8°F, wind 4 mph (3m high 5 minute average wind speed was 3.68 mph), wind gust 5.71 mph, from the Southeast, relative humidity 60.9%. Weather conditions at 11:59 a.m. Sunny, 78.6°F, wind 4-6 mph (3m high 5 minute average wind speed was 3.21 mph), wind gust 8.76 mph, from the South, relative humidity 49.1%. Meter reading at the start of irrigation event: 6623750.0; Meter reading at the end of irrigation event: 6681131.8; Total gallon of water used in this irrigation event (as measure by a in-line water meter): A minimum amount of 57,380.8 gallons of water was applied at time of irrigation. Average 423 gallons per minute (as measure by a in-line water meter). | Ethan Rocklin | https://aglog.kbs.msu.edu/observations/6638 |