About this Dataset

Data From: Crop Sequence And Nitrogen Fertilization Effects On Soil Properties In The Western Corn Belt

Understanding long-term management effects on soil properties is necessary to determine the sustainability of cropping systems. Documentation of soil property responses to corn-based cropping systems in the Western Corn Belt, however, is limited. A study was conducted near Mead, Nebraska to document the effects of four crop sequences (continuous corn, corn-soybean, corn-oat+clover-grain sorghum-soybean, corn-soybean-grain sorghum-oat+clover) and three nitrogen (N) rates (zero, low, high) on a suite of soil properties. At the time of sampling (spring 1999), treatments had been in place for 16 years. Soil samples were collected from two depths using a 1.8 cm step-down probe: 0-7.6 cm and 0-30.5 cm. Soil pH and electrical conductivity was estimated from a 1:1 soil-water mixture. Soil nitrate-N was measured using 1:10 soil-KCl extracts and the cadmium reduction method. Extractable P was determined by the Bray P-1 method. Particulate organic matter was determined by weight loss-on-ignition. Total carbon and N were determined by dry combustion. Potentially mineralizable N was determined by anerobic incubation, while microbial biomass was estimated by microwave irradiation. Soils data were used to identify associations with 16-year averages of grain and stover yield, grain and stover N uptake, and post-harvest soil nitrate-N. Data may be used to understand soil responses to corn-based cropping systems under rainfed conditions in a humid continental climate. Applicable USDA soil types include Yutan, Tomek, and Fillmore.
Organization: Department of Agriculture
Last updated: 2024-06-29T22:55:53.747429
Tags: corn-production, crop-rotation, fertilization-rate, long-term-research

Tables

WCBCropSys Soil 0-30.5cm Data

@usgov.usda_gov_data_from_crop_sequence_and_nitrogen_fertiliz_80f6c9a9.wcbcropsys_soil_0_30_5cm_data

15.26 kB
36 rows
19 columns

CREATE TABLE wcbcropsys_soil_0_30_5cm_data (
  "plot" BIGINT,
  "rep" BIGINT,
  "rotn" BIGINT,
  "nrate" VARCHAR,
  "sbd" DOUBLE,
  "awhc" DOUBLE,
  "ec" DOUBLE,
  "ph" DOUBLE,
  "no3" DOUBLE,
  "p" DOUBLE,
  "soc" BIGINT,
  "tn" BIGINT,
  "pomt" BIGINT,
  "pomlf" BIGINT,
  "pomsf" BIGINT,
  "pom_som" DOUBLE,
  "pmn" DOUBLE,
  "mbc" BIGINT,
  "mbn" DOUBLE
);

WCBCropSys Soil 0-30.5cm Metadata

@usgov.usda_gov_data_from_crop_sequence_and_nitrogen_fertiliz_80f6c9a9.wcbcropsys_soil_0_30_5cm_metadata

4.27 kB
19 rows
4 columns

CREATE TABLE wcbcropsys_soil_0_30_5cm_metadata (
  "attribute" VARCHAR,
  "description" VARCHAR,
  "units" VARCHAR,
  "note" VARCHAR
);

WCBCropSys Soil 0-7.6cm Metadata

@usgov.usda_gov_data_from_crop_sequence_and_nitrogen_fertiliz_80f6c9a9.wcbcropsys_soil_0_7_6cm_metadata

3.94 kB
13 rows
4 columns

CREATE TABLE wcbcropsys_soil_0_7_6cm_metadata (
  "attribute" VARCHAR,
  "description" VARCHAR,
  "units" VARCHAR,
  "note" VARCHAR
);

WCBCropSys Soil&Crop Data

@usgov.usda_gov_data_from_crop_sequence_and_nitrogen_fertiliz_80f6c9a9.wcbcropsys_soil_crop_data

11.9 kB
12 rows
16 columns

CREATE TABLE wcbcropsys_soil_crop_data (
  "rotn" BIGINT,
  "nrate" VARCHAR,
  "grain" BIGINT,
  "stover" BIGINT,
  "grainnup" DOUBLE,
  "stvrnup" DOUBLE,
  "resno3" DOUBLE,
  "sbd" DOUBLE,
  "ec" DOUBLE,
  "ph" DOUBLE,
  "soc" BIGINT,
  "tn" BIGINT,
  "pomt" BIGINT,
  "pomlf" BIGINT,
  "pomsf" BIGINT,
  "pom_som" DOUBLE
);

WCBCropSys Soil&Crop Metadata

@usgov.usda_gov_data_from_crop_sequence_and_nitrogen_fertiliz_80f6c9a9.wcbcropsys_soil_crop_metadata

4.02 kB
16 rows
4 columns

CREATE TABLE wcbcropsys_soil_crop_metadata (
  "attribute" VARCHAR,
  "description" VARCHAR,
  "units" VARCHAR,
  "note" VARCHAR
);