Yawara Long-Term Fertilizer Experiment

This experiment has been added by the GLTEN Curators using existing published sources.
Objective
To study the effects of different fertilizers on rice production
Data Access Statement
Don't know
Data license
Don't know
Data policy
Don't know
Organization
National Agricultural Research Organization
research organisation
People

Site: Yawara experiment site

Type
research station field
Location
Nikkawa
Ibaraki
Japan
Geographic location
36.004444, 140.020278
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Visits permitted?
No
Soil properties
VariableDepthValue (range)UnitsRef yearEstimated?Baseline?
total soil nitrogen (0.2 – 0.32) Percent2001
soil total carbon (2.08 – 3.05) Percent2001
soil carbon to nitrogen ratio (9.6 – 10.31) 2001
cation exchange capacity (20.02 – 22.7) kilogram per mole2001
plant available phosphorous (20.02 – 22.7) milligram per kilogram2001
soil pH (5.17 – 6.37) 2001
Climate properties
VariableTime periodValue (range)Units
air temperature13.2 degree Celsius
precipitation1186.5 millimeter

Design period: (1926—)

Number of harvests per year
1
Crop
CropYears grown
rice
Factor
Factor name
Factor levels
fertilizer exposure
control exposure
No fertilizer
nitrogen  (100 kgN/ha)
Chemical form: ammonium sulfate
green manure
Clover green manure, incorporated into the soil 1 month before transplanting.
rice straw and soybean cake
Chemical form: rice straw compost
Incorporated into the soil 3 weeks before transplanting.

Related publications

  • Luo, Lg., Itoh, S., Zhang, Qw. et al. Leaching behavior of nitrogen in a long-term experiment on rice under different N management systems. Environ Monit Assess 177, 141–150 (2011).