Narrative Agronomic Field Log — Main Cropping System Experiment (MCSE)

Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

This log details agronomic activity on the LTER site. The related tables include views of the agronomic log that might be useful to answer more specific question.

A browsable interface of the aglog is available at https://aglog.kbs.msu.edu

Annual Ag Reports are available for the years 2011 2012

This datatable is part of the Main Cropping System Experiment Field Logs and treatment descriptions dataset. This dataset includes information about the LTER main site treatments, agronomic practices carried out on the treatments and approved site use requests.

Most long-term hypotheses associated with the KBS LTER site are being tested within the context of the main cropping systems study. This study was established on a 48 ha area on which a series of 7 different cropping systems were established in spring 1988, each replicated in one of 6 ha blocks. An eighth never-tilled successional treatment, is located 200 m off-site, replicated as four 0.06 ha plots.

Cropping systems include the following treatments:

  • T1. Conventional: standard chemical input corn/soybean/wheat rotation conventionally tilled (corn/soybean prior to 1992)
  • T2. No-till: standard chemical input corn/soybean/wheat rotation no-tilled (corn/soybean prior to 1992)
  • T3. Reduced input: low chemical input corn/soybean/wheat rotation conventionally tilled (ridge till prior to 1994)
  • T4. Biologically based: zero chemical input corn/soybean wheat rotation conventionally tilled (ridge till prior to 1994)
  • T5. Poplar: Populus clones on short-rotation (6-7 year) harvest cycle
  • T6. Switchgrass (converted in 2018 from continuous alfalfa, replanted every 6-7 years)
  • T7. Early successional community: historically tilled soil
  • T8. Mown grassland community: never-tilled soil.

For specific crops in a given year see the Annual Crops Summary Table.

In 1993 a series of forest sites were added to the main cropping system study to provide long-term reference points and to allow hypotheses related to substrate diversity to be tested. These include:

  • TCF. Coniferous forest: three conifer plantations, 40-60 years old
  • TDF. Decidious forest: three deciduous forest stands, two old-growth and one 40-60 years post-cutting
  • TSF. Mid-successional forest: three old-field (mid-successional) sites 40+ years post-abandonment.

All share a soil series with the main cropping system treatments, and are within 5 km of all other sites.

For each system (and for a number of microplot treatments nested within the main treatment plots) the following baseline variates are being measured (described in greater detail in other data set descriptors):

  • plant characteristics, including species distributions and abundances, net aboveground productivity by functional group (crop vs. non dominant biomass, selected non dominant biomass), economic yields, tissue C and N contents, seed bank composition;
  • soil chemical and physical characteristics, including soil moisture, pH, inorganic N and P pools, total C, N, and P pools, bulk density;
  • soil biological characteristics, including microbial biomass C and N, N mineralization rates (buried bags), microbial populations, invertebrate populations; and
  • insect and pathogen dynamics, including distributions and abundances of major insect pests and predators and of Fusarium pathogens.

Note

Experiment: Main Cropping System Experiment (MCSE)
Data available from: May 1988 to March 2020
Dataset: KBS004
Datatable ID: KBS004-001.100
Repository link: http://doi.org/10.6073/pasta/e5642426f9200404b6ba3af45ad9c423
Related Tables:
Personnel:
Last Updated 2020-07-10
Variate Description Units
obs date usually the date on which the observation was authored, unless otherwise noted
comment prose text representing an observation, e.g. a log entry
author author of the observation

Data Excerpt

obs_date comment author
2022-04-21 Sprayed LTER Main Site Treatment T2 all replications (5, 4, 3,1,6and 2), for post emergence weed control in winter wheat. Plots sprayed with a tank mix of Ammonium Sulfate at 1 lb/A, Powerflex HL at 2 oz/A, Husky at .1oz/A and Non-ionic surfactant at 0.5% v/v (2 qt/100 gal carrier). Time of application was 4:55 p.m. - 7:40 p.m. Three passes in the West end of Rep 2 remain unsprayed. Weather conditions 4:55 p.m. were clear, temperature was 62°F, 45% humidity 10-12 mph West wind. Weather conditions 7:45 p.m. were clear, temperature was 62.2°F, 42% humidity 10-13 mph West wind. Equipment used: JD 5420 tractor traveling 5 mph with a pull type Top Air Sprayer equipped with a hydraulic centrifugal sprayer pump and John Deere Rate Controller. Leon Thelen
2022-04-12 Burned prairie strips located in the LTER main site treatment 3 and 4, all replications, reps: 1, 2, 3, 4, 5, and 6. Started burning at 10:00 a.m., and finished at 1:00 p.m., this was just burning time and does not include setup and cleanup. Weather conditions at 9:41 a.m. Mostly Sunny, Temperature: 48.9 degrees F, Humidity: 71.2%, Wind: coming out of the Southeast, Wind Speed (5 minute average wind speed) 1.00 mph at 3m height, gust (in the last hour) up to 5.12 mph at 10m height. Weather conditions at 12:57 p.m. Mostly Sunny, Temperature: 61.3 degrees F, Humidity: 29.7%, Wind: coming out of the Northeast, Wind Speed (5 minute average wind speed) 11.03 mph at 3m height, gust (in the last hour) up to 18.72 mph at 10m height. LTER lab group completed the burning in prairie strips. Ethan Rocklin
2022-03-29 Burned LTER main site treatment 7, all replications, reps: 1, 3, 4, 2, 6, and 5. Burn times for T7: R1 at 1:00 p.m. to 1:30 p.m., R3 at 1:40 p.m. to 2:00 p.m., R4 at 2:10 p.m. to 2:30 p.m., R2 at 2:35 p.m. to 3:00 p.m., R6 at 3:05 p.m. to 3:25 p.m., and R5 at 3:33 p.m. to 4:00 p.m. this was just burning time and does not include setup and cleanup. Weather conditions at 1:00 p.m. clear skies, Temperature: 36.7 degrees F, Humidity: 30.4%, Wind: coming out of the Southeast; Wind Speed: (5 minute average wind speed) 9 mph at 3m height, gust (in the last hour) up to 15.3 mph at 10m height. Weather conditions at 2:30 p.m. partial clouds, Temperature: 37.7 degrees F, Humidity: 29.3%, Wind: coming out of the southeast; Wind Speed: (5 minute average wind speed) 12 mph at 3m height, gust (in the last hour) up to 16.0 mph at 10m height. Weather conditions at 4:30 p.m. partial clouds, Temperature: 39.5 degrees F, Humidity: 33.8%, Wind: coming out of the southeast; Wind Speed: (5 minute average wind speed) 10 mph at 3m height, gust (in the last hour) up to 16.0 mph at 10m height. LTER lab group completed the burning in T7 plots. Leon Thelen
2022-03-28 Fertilized LTER Main Site winter wheat treatment T8 all replications (1,2,3, and 4), Plots were fertilized with 20 gallons per acre of (28-0-0). 28-0-0 weighs 10.67 lbs/gallon so 59.75 lbs of N/A was applied. Weather conditions 1:30 a.m. were clear 28 degrees F, 44.8% humidity 8 mph West wind. Application was completed using the John Deere 5220 Tractor and the Top Air 30ft sprayer. The sprayer was fitted with Chafer stream bars set to 1.0 orifice setting traveling an average of 5.5 mph. Leon Thelen
2022-03-22 Fertilized LTER Main Site winter wheat treatment T1 all replications (5,6,4,3,1, and 2), Plots were fertilized with 20 gallons per acre of (28-0-0). 28-0-0 weighs 10.67 lbs/gallon so 59.75 lbs of N/A was applied. Weather conditions 10 a.m. were cloudy 42 degrees F, 79.3% humidity 13 mph East wind. Conditions 1 p.m. cloudy and scattered showers, 43.3 degrees F 83.5% humidity 13 mph East winds. Application was completed using the John Deere 5220 Tractor and the Top Air 30ft sprayer. The sprayer was fitted with Chafer stream bars set to 1.0 orifice setting traveling an average of 6 mph. Applications in Rep 1,2,3,and 4 on the South headlands by the REX shelter sites was completed using one 15 ft pass and 1 to 2 30ft passes traveling east and west. This avoided driving in the shelter locations while applying the 20 gal/A. Leon Thelen
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