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Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

Planting details for Replicate 1. The other replicates are usually planted the same day but where excluded from this dataset to reduce the number of repeated rows.

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: November 1988 to November 2019
Dataset: KBS004
Datatable ID: KBS004-013.99
Repository link: http://doi.org/10.6073/pasta/e5642426f9200404b6ba3af45ad9c423
Related Tables:
Personnel:
Last Updated 2021-08-19
Variate Description Units
obs date The observation date
Treatment experimental treatment
Replicate LTER Replicate
Plot LTER Plot
Material material used
Rate rate of application number
Unit units per acre
propagules per acre the number of propagules (seeds or plants) planted per acre number/acre
propagule rate estimation flag a flag to indicate if the number of propagules has been estimate and 'E' indicates and estimated values based on the source_for_estimation and a an empty values indicates a reported value.
source for estimation references for the conversion from the reported planting rates to the propagules_per_acre column
Comment aa note about the sample
source the source URL for the observation

Data Excerpt

obs_date treatment replicate plot material rate unit propagules_per_acre propagule_rate_estimation_flag source_for_estimation comment source
2021-07-21 T8 R3 T8ntR3 Pioneer P22T86E Soybean Seed (Roundup Ready) 160000.0 seeds 160000.0 Planted soybeans in the LTER Main Site T8NT all reps. Equipment used: Planted with the JD 7330 tractor and JD 1730 planter. Variety: Planted Pioneer P22T86E Roundup Ready and Enlist E3 soybeans (untreated seed). The P22T86E soybeans contained 2256 seeds/lb. Seeding Rate: 160,000 seeds/A. Planting depth: 1.50 inches. Row spacing: 15 inches. https://aglog.kbs.msu.edu/observations/5165
2021-07-21 T8 R4 T8ntR4 Pioneer P22T86E Soybean Seed (Roundup Ready) 160000.0 seeds 160000.0 Planted soybeans in the LTER Main Site T8NT all reps. Equipment used: Planted with the JD 7330 tractor and JD 1730 planter. Variety: Planted Pioneer P22T86E Roundup Ready and Enlist E3 soybeans (untreated seed). The P22T86E soybeans contained 2256 seeds/lb. Seeding Rate: 160,000 seeds/A. Planting depth: 1.50 inches. Row spacing: 15 inches. https://aglog.kbs.msu.edu/observations/5165
2021-07-21 T8 R1 T8ntR1 Pioneer P22T86E Soybean Seed (Roundup Ready) 160000.0 seeds 160000.0 Planted soybeans in the LTER Main Site T8NT all reps. Equipment used: Planted with the JD 7330 tractor and JD 1730 planter. Variety: Planted Pioneer P22T86E Roundup Ready and Enlist E3 soybeans (untreated seed). The P22T86E soybeans contained 2256 seeds/lb. Seeding Rate: 160,000 seeds/A. Planting depth: 1.50 inches. Row spacing: 15 inches. https://aglog.kbs.msu.edu/observations/5165
2021-07-21 T8 R2 T8ntR2 Pioneer P22T86E Soybean Seed (Roundup Ready) 160000.0 seeds 160000.0 Planted soybeans in the LTER Main Site T8NT all reps. Equipment used: Planted with the JD 7330 tractor and JD 1730 planter. Variety: Planted Pioneer P22T86E Roundup Ready and Enlist E3 soybeans (untreated seed). The P22T86E soybeans contained 2256 seeds/lb. Seeding Rate: 160,000 seeds/A. Planting depth: 1.50 inches. Row spacing: 15 inches. https://aglog.kbs.msu.edu/observations/5165
2021-06-17 T3 R4 T3R4 Pioneer P22T86E Soybean Seed (Roundup Ready) 140000.0 seeds 140000.0 Yes, we this was a 'replanting' of the soybeans in T3 plots, all reps. Soybeans were planted in the T3 plots on May 22, 2021. Seed corn maggot was eating the soybean seed so we had a poor stand of beans. On first observation and a few quick stand counts we have 20-50K seeds per acre. At a minimum we need 50K seeds per acre to expect any chance of a respectable yield for the T3 plots. We had many things go wrong in the T3 plots: soybeans were planted after a rye cover crop into dry soil, soybeans were in the ground when we had 4 nights of cold temperatures, and we have not received much rain this year. However, the biggest concern is the seed corn maggot. It seems we have had a perfect storm for the T3 soybeans. 1. We have evidence of seed corn maggot feeding on the soybean seeds and stems which has been backed up by our seed dealer. Our seed dealer has other customers that had problems this spring with seed corn maggot feeding on soybeans. In all cases with the seed corn maggot feeding on the soybeans has been following a rye cover crop (which is what we have in the T3 plots). Brook, Leon, and I looked at the soybeans in the T3 plots and I asked Mike Staton to join me. Mike is the MSU Extension Soybean Educator, Mike is responsible for the Michigan Soybean On-Farm Research. Mike was at KBS today completing data collection with some of the trails that he is working with Brook on. I asked Mike to look at the T3 plots and Mike agrees that we have evidence of seed corn maggot feeding. Gary our crop scout will not have time to look the plots until Friday. Basically, we have three options: 1. 1. We can keep the plots as is. We do have a treatment effect from the rye cover crop. 2. 2. We can replant the field. Start all over by spraying the current stand of soybeans and replanting the soybeans. 3. We can inter-seed more soybeans in between the existing rows of soybeans. Brook, Mike Staton, and I all agree that a farmer would inter-seed more soybeans within the existing soybean rows. https://aglog.kbs.msu.edu/observations/5135
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