Herbicide applied

Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use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 table lists the herbicide applications on the LTER Main site. Herbicide application on the other replicates might differ in timing or amounts. Application rates are generally in amount of commercial solution of herbicide per hectare

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. Alfalfa: continuous alfalfa, replanted every 6-7 years (converted to switchgrass in 2018)
  • 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: April 1989 to October 2019
Dataset: KBS004
Datatable ID: KBS004-010.98
Repository link: http://doi.org/10.6073/pasta/982d060e64a17a152de6234a5325edf5
Related Tables:
Personnel:
Last Updated 2020-07-10
Variate Description Units
Obs Date observation date
Treatment treatment identifier
Replicate LTER replicate
Plot research plot
Material material applied
Rate kg ha rate that the material is applied at kg/ha
comment aglog entry
source url of the aglog entry

Data Excerpt

obs_date treatment replicate plot material rate_kg_ha comment source
2020-06-25 T3 R1 T3R1 Roundup Power Max (glyphosate 48.7%) 2.34 Sprayed LTER Main Site treatment T3 all replications for post-emergence weed control where corn was planted. Sprayed with AMS and Roundup Powermax. AMS applied at 3.4 lbs/A and Roundup Powermax 1qt/A. Weather conditions at the start 8:50 a.m. sunny 66.3 degrees F, 76% humidity with 6-7 mph north west winds. Conditions at the end 11:40 a.m. were sunny, 71.5 degrees F, 58.2% humidity, and 4-6 mph west. https://aglog.kbs.msu.edu/observations/4825
2020-06-25 T3 R2 T3R2 Roundup Power Max (glyphosate 48.7%) 2.34 Sprayed LTER Main Site treatment T3 all replications for post-emergence weed control where corn was planted. Sprayed with AMS and Roundup Powermax. AMS applied at 3.4 lbs/A and Roundup Powermax 1qt/A. Weather conditions at the start 8:50 a.m. sunny 66.3 degrees F, 76% humidity with 6-7 mph north west winds. Conditions at the end 11:40 a.m. were sunny, 71.5 degrees F, 58.2% humidity, and 4-6 mph west. https://aglog.kbs.msu.edu/observations/4825
2020-06-25 T3 R3 T3R3 Roundup Power Max (glyphosate 48.7%) 2.34 Sprayed LTER Main Site treatment T3 all replications for post-emergence weed control where corn was planted. Sprayed with AMS and Roundup Powermax. AMS applied at 3.4 lbs/A and Roundup Powermax 1qt/A. Weather conditions at the start 8:50 a.m. sunny 66.3 degrees F, 76% humidity with 6-7 mph north west winds. Conditions at the end 11:40 a.m. were sunny, 71.5 degrees F, 58.2% humidity, and 4-6 mph west. https://aglog.kbs.msu.edu/observations/4825
2020-06-25 T3 R4 T3R4 Roundup Power Max (glyphosate 48.7%) 2.34 Sprayed LTER Main Site treatment T3 all replications for post-emergence weed control where corn was planted. Sprayed with AMS and Roundup Powermax. AMS applied at 3.4 lbs/A and Roundup Powermax 1qt/A. Weather conditions at the start 8:50 a.m. sunny 66.3 degrees F, 76% humidity with 6-7 mph north west winds. Conditions at the end 11:40 a.m. were sunny, 71.5 degrees F, 58.2% humidity, and 4-6 mph west. https://aglog.kbs.msu.edu/observations/4825
2020-06-25 T3 R5 T3R5 Roundup Power Max (glyphosate 48.7%) 2.34 Sprayed LTER Main Site treatment T3 all replications for post-emergence weed control where corn was planted. Sprayed with AMS and Roundup Powermax. AMS applied at 3.4 lbs/A and Roundup Powermax 1qt/A. Weather conditions at the start 8:50 a.m. sunny 66.3 degrees F, 76% humidity with 6-7 mph north west winds. Conditions at the end 11:40 a.m. were sunny, 71.5 degrees F, 58.2% humidity, and 4-6 mph west. https://aglog.kbs.msu.edu/observations/4825
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