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Agronomic Yields - Annual Crops

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Annual crop harvest data for corn, soy, and wheat from the Main Cropping System Experiment at the LTER Main Site as collected with commercial-sized equipment.

Prior to 2017, the yield was reported from the east half of the plot. In 2017 the protocol was changed to report the yield for the whole plot.

Praire strips were installed in 2019 in T3 and T4. We started reporting the crop yield as well as the economic yield which we define as the yield divided by the total plot area including the prairie strips. The prairie strips are 15 feet wide and the plots are nominally 300 feet (100 meters) wide.

This datatable is part of the Agronomic Yields in Row Crop Agriculture dataset. This data set contains information about agronomic yields for the Main Cropping System Experiment which include treatments 1-4 (corn – wheat – soybean rotations) and after 1994 treatment 6 (alfalfa). Agronomic yields are measured during normal crop harvest; yields are determined by machine harvesters appropriate to each crop as described in the Agronomic protocol.

Note

Experiment: Main Cropping System Experiment (MCSE)
Data available from: July 1989 to October 2021
Dataset: KBS020
Datatable ID: KBS020-001.59
Core Areas Primary Production,Disturbance
Repository link: http://doi.org/10.6073/pasta/00c3343378bf55e0727cccecc8a8ff41
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Last Updated 2022-04-27
Variate Description Units
Date harvest date
Treatment treatment
Replicate replicate
Crop crop species collected
crop only yield bu A This yield is based on the crop area. Crop kernel/seed harvested at crop harvest in bu/A (at standardized moisture for corn 15.5%, wheat/soybean 13%; conversions for corn: 56 pounds/bushel wheat/soybeans: 60 pounds/bushel) bu/ac
crop only yield kg ha This yield is based on the crop area. Crop kernel/seed harvested at crop harvest in kg/ha (at standardized moisture for corn 15.5%, wheat/soybean 13%) kg/ha
whole plot yield bu A This yield is based on including the area of the 15-foot wide prairie strips in the denominator of the yield calculation (at standardized moisture for corn 15.5%, wheat/soybean 13%). bu/ac
whole plot yield kg ha This yield is based on including the area of of the 15-foot prairie strips in the denominator of the yield calculation (at standardized moisture for corn 15.5%, wheat/soybean 13%). kg/ha
Year crop year

Data Excerpt

date treatment replicate crop crop_only_yield_bu_a crop_only_yield_kg_ha whole_crop_yield_bu_a whole_crop_yield_kg_ha year
2021-10-20 T4 R4 Glycine max L. (*) 36.1 2423.8 34.295 2302.61 2021
2021-10-20 T4 R5 Glycine max L. (*) 29.2 1964.4 27.74 1866.18 2021
2021-10-20 T4 R1 Glycine max L. (*) 30.8 2069.1 29.26 1965.645 2021
2021-10-20 T4 R3 Glycine max L. (*) 32.0 2154.4 30.4 2046.68 2021
2021-10-20 T4 R6 Glycine max L. (*) 21.1 1417.8 20.045 1346.91 2021
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