Crop | Years Grown |
---|---|
Spring Beans | |
Spring Barley | |
Potatoes | |
Spring Oats | |
Spring Rapeseed | |
Fallow |
Factors are the interventions or treatments which vary across the experiment.
Description: four rates of lime: control, low, medium and high. Applied in 1962/63 and again in 1978. Amounts given are the total amounts applied, see comments for splits.
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 t/ha | 1962 - 1980 | |||||
Lime Low | 6 t/ha | 1962 - 1980 | twice | ground chalk | 5 t/ha in 1962, 1 t/ha in 1978 | ||
Lime Medium | 14 t/ha | 1962 - 1980 | twice | ground chalk | 12 t/ha in 1962, 2 t/ha in 1978 | ||
Lime High | 23 t/ha | 1962 - 1980 | twice | ground chalk | 19 t/ha in 1962, 4 t/ha in 1978 |
Description: Two P fertilizer treatments, nil and P.
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 kgP/ha | 1962 - 1980 | |||||
Superphosphate P | 27.5 kgP/ha | 1962 - 1978 | annually | triple superphosphate | 55 kgP/ha applied to potatoes and 0 applied in fallow years 1969, 1979, 1980 |
Description: Two treatments, nil and K
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 kgK/ha | 1962 - 1980 | |||||
Potassium K | 104 kgK/ha | 1962 - 1978 | annually | muriate of potash | In 1968 and 1974, 156 kgK applied to potatoes. Not applied to fallow years, 1969, 1979, 1980. |
Description: Two magnesium treatments applied to sub-plots 1974-1978, nil and Mg
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 kgMg/ha | 1974 - 1978 | |||||
Magnesium | 112 kgMg/ha | 1974 - 1978 | Annually in spring | magnesium sulphate | Not applied in 1975. Applied as Epsom salts 1974-1977 and as Kieserite in 1978. |
Description: Spring beans seed inoculated with Rhizobium
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 | 1962 - 1962 | spring beans | ||||
Inoculated | 1962 - 1962 | spring beans |
Variable | Unit | Collection Frequency |
Material | Description | Crop |
---|---|---|---|---|---|
Yield Components | t/ha | annually | AllCrops | Crop grain yields at 85% dry matter for cereals, 90% dry matter for oilseeds and fresh weight for potatoes. No straw data. | |
Soil pH | every few years | Soil | pH in water 1:2.5 soil: water suspension from topsoil (0-23cm). Sampled in autumn/winter after harvest and before sowing the next crop. | ||
Plant Available Phosphorous | ppm | every few years | Soil | Olsen P (plant-available P) in soil, ppm in soil. |
Crop | Years Grown |
---|---|
Spring Oats | |
Potatoes | |
Spring Barley | |
Winter Triticale | |
Spring Lupins | |
Linseed | |
Spring Beans | |
Winter Rapeseed | |
Winter Lupins | |
Winter Wheat | |
Fallow |
Factors are the interventions or treatments which vary across the experiment.
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 kgP/ha | 1981 - 1996 | P0 | ||||
P1 | kgP/ha | 1981 - 1996 | Superphosphate at 25, 25 & 50 kgP/ha applied in 1981, 1982 & 1983 and 25 kgP/ha applied 1988 | ||||
P2 | kgP/ha | 1981 - 1996 | triple superphosphate | Superphosphate at 25, 0 & 50 kgP/ha applied in 1981, 1982 & 1983 and 25 kgP/ha applied 1988 | |||
P3 | kgP/ha | 1981 - 1996 | triple superphosphate | Superphosphate at 75, 25 & 100 kgP/ha applied in 1981, 1982 & 1983 and 75 kg/ha applied 1988 |
Description: Continuation of 4 treatments in Period 1 Further applications made after period 1. Applied in 1981, 1982 and 1986. Amounts given are the total amounts applied, see comments for splits.
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 t/ha | 1981 - 1996 | |||||
Lime Low | 3 t/ha | 1981 - 1996 | 3 times | ground chalk | Total application over the whole experiment = 9 t/ha. Total amount applied to plots previously receiving 6 t/ha chalk between 1962 and 1978. Chalk was applied at 2, 0 and 1 t/ha in 1981, 1982 and 1986 respectively. | ||
Lime Medium | 11.5 t/ha | 1981 - 1996 | 3 times | ground chalk | Total application over the whole experiment = 24.5 t/ha. Total amount applied to plots previously receiving 14 t/ha chalk between 1962 and 1978. Chalk was applied at 5, 5 and 1.5 t/ha in 1981, 1982 and 1986 respectively. | ||
Lime High | 22.5 t/ha | 1981 - 1996 | 3 times | ground chalk | Total application over the whole experiment = 52.5 t/ha. Total amount applied to plots previously receiving 23 t/ha chalk between 1962 and 1978. Chalk was applied at 10, 10 and 2.5 t/ha in 1981, 1982 and 1986 respectively. |
Description: Manganese fertilizer applied to split plots 1987-1990 only
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 kg/ha | 1987 - 1990 | Manganese applied to split plots | ||||
Manganese | 0.3 kg/ha | 1987 - 1990 | annually | manganese sprays | Applied twice a year as foliar spray |
Description: Sulphur applied to split plots
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 kgS/ha | 1991 - 1996 | |||||
Sulphur | 30 kgS/ha | 1991 - 1996 | annually | calcium sulfate |
Variable | Unit | Collection Frequency |
Material | Description | Crop |
---|---|---|---|---|---|
Yield Components | t/ha | annually | AllCrops | Crop grain yields at 85% dry matter for cereals, 90% dry matter for oilseeds and fresh weight for potatoes. No straw data. | |
Soil pH | every few years | Soil | pH in water 1:2.5 soil: water suspension from topsoil (0-23cm). Sampled in autumn/winter after harvest and before sowing the next crop. | ||
Plant Available Phosphorous | ppm | every few years | Soil | Olsen P (plant-available P) in soil, ppm in soil. |
Variable | Value | Reference Year | Is Estimated | Is Baseline |
---|---|---|---|---|
Coarse sand content | 50% (Percent) | 1974 | NO | NO |
Fine sand content | 27% (Percent) | 1974 | NO | NO |
Silt content | 7% (Percent) | NO | NO | |
Clay content | 11% (Percent) | 1974 | NO | NO |
Soil total carbon | 0.82% (Percent) | NO | NO | |
Total soil nitrogen | 0.08% (Percent) | 1974 | NO | NO |
Soil weight | 3400t/ha (tonnes per hectare) | 1934 | NO | NO |
Soil pH | 6 (pH) | 1962 | NO | YES |
Title (hover for a longer description) | Year of Publication | Identifier | Version |
---|---|---|---|
Crop nutrient data | |||
Woburn long-term liming experiment grain mineral composition | 2021 | 10.23637/wcs10-wltlgrain-01 |
01 |
Crop yield data - Annual | |||
Woburn long-term liming experiment crop yields 1962-1996 | 2020 | 10.23637/wcs10-wltlyields-01 |
01 |
Soil data | |||
Woburn long-term liming experiment soil chemical properties 1962-1996 | 2024 | 10.23637/wcs10-soil-02 |
02 |
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For further information and assistance, please contact the e-RA curators, Sarah Perryman and Margaret Glendining using the e-RA email address: era@rothamsted.ac.uk