Planting details in replicate 1

This datatable is part of the Main Cropping System Experiment 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:

  1. standard chemical input corn/soybean/wheat rotation conventionally tilled (corn/soybean prior to 1992)
  2. standard chemical input corn/soybean/wheat rotation no-tilled (corn/soybean prior to 1992)
  3. low chemical input corn/soybean/wheat rotation conventionally tilled (ridge till prior to 1994)
  4. zero chemical input corn/soybean wheat rotation conventionally tilled (ridge till prior to 1994)
  5. Populus clones on short-rotation (6-7 year) harvest cycle
  6. continuous alfalfa, replanted every 6-7 years
  7. early successional community on historically tilled soil
  8. successional community on 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:

  • DF – three deciduous forest stands, two old-growth and one 40-60 years post-cutting
  • CF – three conifer plantations, 40-60 years old
  • SF – 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 March 2016
Dataset: KBS004
Datatable ID: KBS004-013.63
Related Tables:
Personnel:
Last Updated 2017-10-24
Variate Description Units
obs date The observation date
Treatment experimental treatment
Material material used
Rate rate of application number
Unit units per acre
Comment aa note about the sample

Data Excerpt

obs_date treatment material rate unit comment
2018-05-29 T3 Pioneer P22T69R (Round Up Ready) Soybean Seed 140000 seeds Planted soybeans in the LTER Main Site treatments T3, reps: 5, 4, and 3 were planted on May 29, 2018. KBS received rainfall just we finished planting rep 3. Enough rain that we could not continue planting the remaining replication. T3 reps: 6, 1, and 2 were planted on Saturday June 2, 2018. Equipment Used: Planted with the JD 7330 tractor and JD 1730 planter. Variety: Planted Pioneer P22T69R Roundup Ready soybeans. Planting depth: 1.25 inches. Row spacing: 15 inches.
2018-05-27 T1 Pioneer P22T69R (Round Up Ready) Soybean Seed 140000 seeds Planted soybeans in the LTER Main Site treatments T1, reps: 5, 1, 4, 2, 3, and 6. T1R5 was planted on May 26, 2018. The remaining reps were planted on May 27, 2018. Equipment Used: Planted with the JD 7330 tractor and JD 1730 planter. Variety: Planted Pioneer P22T69R Roundup Ready soybeans. Planting depth: 1.25 inches. Row spacing: 15 inches.
2018-05-26 T8 Pioneer P22T69R (Round Up Ready) Soybean Seed 140000 seeds Planted soybeans in the LTER Main Site. Planted the N-rate (irrigated and non-irrigated studies), T8nt plots (all 4 reps), and CE study trt CE3 (plots 105, 207, 301, and 403). Equipment Used: Planted with the JD 7330 tractor and JD 1730 planter. Variety: Planted Pioneer P22T69R Roundup Ready soybeans. Planting depth: 1.25 inches. Row spacing: 15 inches.
2018-05-25 T2 Pioneer P22T69R (Round Up Ready) Soybean Seed 144000 seeds Planted soybeans in the LTER Main Site treatments T2, reps: 5, 2, 3, 4, 1, 6. Planted with the JD 7330 tractor and JD 1730 planter. Planted Pioneer P22T69R Roundup Ready soybeans. Planting depth: 1.25 inches. Row spacing: 15 inches. Due to an error in the planter rate controller soybeans were planted at an average population of 94,000 seeds/A. T2 plots were replanted on May 26, 2018 at a population of 50,000 seeds/A to get a total soybean population of 144,000 seeds/A. The replant was shifted over 3 inches off of the original planting pass.
2017-11-08 T3 rye unknown No-till planted wheeler rye in the LTER Main Site Treatment T3, all replications (Reps 5, 4, 2, 3, 1, 6). Rye was planted with a target rate of 2.8 bu/A or 158lbs/A. Rye was actually seeded at 2.7 bu/A or 149 lbs/A. Planting depth was 1 to 1-1/2 inches deep and setting on drill was #39.
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