Soil Inorganic N and Moisture — Resource Gradient Experiment

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Inorganic nitrogen (nitrate and ammonium) and gravimetric moisture of surface (0-25 cm) soils.

This datatable is part of the Resource Gradient Experiment dataset. This dataset contains the agronomic yields and soil properties of the LTER Resource Gradient Experiment, which applies nine different rates of nitrogen fertilization (F1-F9) to annual row crops under rainfed (since 1999) and irrigated (since 2003) conditions. Since 2006, row crops have followed the same rotation as the LTER Main Cropping System Experiment (MCSE; corn-soybean-wheat); continuous corn was grown from 1999-2005. Nitrogen fertilization rates differ by crop (since 2008) and are given on the plot map.

The experiment moved to its current location in the LTER Main Site in 2005; previous experimental designs and locations are given here

Note

Experiment: Resource Gradient Experiment
Data available from: January 2012
Dataset: KBS033
Datatable ID: KBS033-007.113
Core Areas Inorganic Nutrients
Repository link: http://doi.org/10.6073/pasta/b87efd66b937c806061635e752862d8a
Related Tables:
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Last Updated 2023-11-27
Variate Description Units
year the year when the sample was taken
campaign the name of the sample campaign
sample date the date the soil sample was taken
plot the plot that was sampled
treatment the treatment
replicate the replicate
no3 nitrate μg/g
nh4 ammonium μg/g
moisture gravimetric soil moisture on a dry weight basis %

Data Excerpt

year campaign sample_date plot treatment replicate no3 nh4 moisture
2012 Soil Inorganic N 2012-10-24 F101 F1 1 1.227 1.193 15.789474
2012 Soil Inorganic N 2012-10-24 F102 F2 1 1.138 0.897 14.99239
2012 Soil Inorganic N 2012-10-24 F103 F3 1 0.883 0.654 14.6503315
2012 Soil Inorganic N 2012-10-24 F104 F4 1 1.854 0.828 16.58998
2012 Soil Inorganic N 2012-10-24 F105 F5 1 1.691 0.614 15.829608
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