Long-term Nutrient Management Experiment ISAS-UT
This experiment has been added by the GLTEN Curators using existing published sources.
- Objective
- To compare fertilization systems that differ in the type and intensity of fertilization in upland cultivation systems growing a wheat-maize rotation.
- Data Access Statement
- Don't know
- Data license
- Don't know
- Data policy
- Don't know
- Organization
- Institute for Sustainable Agro-ecosystem Services, University of Tokyoresearch organisation
- People
Site: Unknown
- Type
- research farm
- Location
- NishitokyoTokyoJapan
- Geographic location
- 35.7355657303687, 139.540459795675
- Visits permitted?
- No
- History
- Before the study was established the field had been managed as uniformly as possible for more than 10 years under a maize–barley rotation using inorganic fertilizer inputs.
- Management
- All plots follow the same crop protection management regimes and tillage using a mouldboard plough to a depth of 30 cm followed by harrowing.
- Soil type
- andosol
- Soil description
- The soil is a volcanic ash classified as Typic Melanudand by USDA soil taxonomy
- Soil properties
Variable Depth Value (range) Units Ref year Estimated? Baseline? sand content 51 Percent 1993 silt content 34 Percent 1993 clay content 15 Percent 1993 soil pH 5.8 1993 soil total carbon 59 gram per kilogram 1993 total soil nitrogen 4.4 gram per kilogram 1993 soil density 0.77 gram per cubic centimetre 1993 soil pH (5.8 – 6.3) 2007 soil total carbon (52 – 65) gram per kilogram 2007 total soil nitrogen (4.1 – 5.5) gram per kilogram 2007
Design period: Main period (1993—)
- Design description
- The experiment field was split into three trial zones, each 8.5 m × 60 m in size for each fertilizer treatment. Each plot was split into four 8.5 m × 15 m plots with a 1.5-m boundary and sampling within the remaining 5.5-m-wide portion of the plot.
- Number of plots
- 3
- Number of subplots
- 12
- Number of harvests per year
- 1
- Crops
Crop Years grown maize wheat - Factors
- Factor name
- Factor levels
- nitrogen fertilizer exposure
SF (252 kgN/ha)
1993—2004Standard nitrogen input. 168 kg/ha in June, 84 kg/ha in NovemberLF (144 kgN/ha)
1993—2004Low nitrogen input. 84 kg/ha in June, 42 kg/ha in NovemberSF (224 kgN/ha)
2005—Standard nitrogen input. 120 kg/ha in June, 84 kg/ha in NovemberLF (102 kgN/ha)
2005—Low nitrogen input. 60 kg/ha in June, 42 kg/ha in NovemberNil
1993—No nitrogen applied as inorganic fertilizer- phosphate fertilizer exposure
SF (164 kgP/ha)
1993—2004Standard phosphorous input. 109 kg/ha in June, 55 kg/ha in NovemberLF (82 kgP/ha)
1993—2004Low phosphorous input. 55 kg/ha in June, 27 kg/ha in NovemberSF (133 kgP/ha)
2005—Standard phosphorous input. 78 kg/ha in June, 55 kg/ha in NovemberLF (66 kgP/ha)
2005—Low phosphorous input. 39 kg/ha in June, 27 kg/ha in NovemberNil
1993—No phosphorous applied as inorganic fertilizer- potassium fertilizer exposure
SF (281 kgK/ha)
1993—2004Standard potassium input. 187 kg/ha in June, 94 kg/ha in NovemberLF (141 kgK/ha)
1993—2004Low potassium input. 94 kg/ha in June, 47 kg/ha in NovemberSF (228 kgK/ha)
2005—Standard potassium input. 134 kg/ha in June, 94 kg/ha in NovemberLF (114 kgK/ha)
2005—Low potassium input. 67 kg/ha in June, 47 kg/ha in NovemberNil
1993—No potassium applied as inorganic fertilizer- farmyard manure exposure
Nil
No organic fertilizer appliedFYM (80 t/ha)
1993—2007Chemical form: farmyard manureApplied as composted cattle manureFYM (30 t/ha)
2008—Chemical form: farmyard manureApplied as composted cattle manure
- Factor combinations
- SF 1993—2004 Standard Input
- nitrogen fertilizer exposure: SFphosphate fertilizer exposure: SFpotassium fertilizer exposure: SFfarmyard manure exposure: Nil
- SF 2005— Standard Inputs, at reduced rate
- nitrogen fertilizer exposure: SFphosphate fertilizer exposure: SFpotassium fertilizer exposure: SFfarmyard manure exposure: Nil
- LF 1993—2004 Low Input
- nitrogen fertilizer exposure: SFphosphate fertilizer exposure: LFpotassium fertilizer exposure: LFfarmyard manure exposure: Nil
- LF 2005— Low Inputs, at reduced rate
- nitrogen fertilizer exposure: LFphosphate fertilizer exposure: LFpotassium fertilizer exposure: LFfarmyard manure exposure: Nil
- OM 1993—2007 Organic manure inputs
- nitrogen fertilizer exposure: Nilphosphate fertilizer exposure: Nilpotassium fertilizer exposure: Nilfarmyard manure exposure: FYM
- OM 2008— Organic manure inputs, reduced rate
- nitrogen fertilizer exposure: Nilphosphate fertilizer exposure: Nilpotassium fertilizer exposure: Nilfarmyard manure exposure: FYM
- SF 1993—2004
- Measurements
Variable Material Units Frequency Scale Comment grain yield trait Not specified yield components Not specified Including spike counts, grain counts per spike, grain weight
Related publications
- Kato, Y., & Yamagishi, J. (2011). Long-term effects of organic manure application on the productivity of winter wheat grown in a crop rotation with maize in Japan. Field Crops Research, 120(3), 387-395.