Summary of all experiments and data

Rothamsted (Harpenden)

Broadbalk Wheat (1843 -)

Continuous winter wheat / wheat in rotation with beans, potatoes, oats, forage maize or fallow

††† wheat

†† other crops

††† wheat

†† other crops

†† weeds (Section 8 no herbicides)

†† disease (take-all, eyespot, Fusarium)

†† Thousand grain weight (TGW), Hagberg falling number (HFN), Hectolitre weight (HLWT)

†† %SOC, %N, pH, Olsen P,

# exchangeable cations, bulk density

## drainage water composition

††† lime, cropping, cultivars, fertilizer, FYM composition, dates

† plans

Barnfield (1843-2001)

roots and other arable crops

##

##

##

Agdell (1848-1990)

arable rotation

##

##

##

Hoosfield Barley (1852 -)

spring barley;
potatoes and beans (1968-78)

†† barley

## other crops

††

†† TGW, HLWT

† %SOC,

# %N, pH, Olsen P, exchangeable cations, bulk density

† cultivars, fertilizer, dates, plan, FYM composition

Garden clover (1854 -)

red clover

##

##

##

Park Grass (1856 -)

permanent grassland

††† 1903-2018

†† 1856-1902

##

††† / †† botanical composition

† pH

# %SOC, %N, Olsen P, exchangeable cations bulk density

††† lime, fertilizer treatments, dates

† plans, FYM composition

Alternate wheat and fallow (1856-2015) wheat

††

##

##

† cultivars, fertilizer, dates, plans

Exhaustion Land (1856 -) cereals

P and K tests

††† 1856-2008

## others

††† barley P

## others

††† HLWT

## TGW

††† soil P

## others

††† cultivars, fertilizer, dates,

† plans

Acid strip (1850s -)

wheat on pH gradient

††† pH, soil P

† description

Wilderness expts (1880s -) regenerative woodland Broadbalk and Geescroft wilderness

† biomass

† carbon

## others

† vegetation

† carbon

† dates and description

Fosters ley-arable (1948 -) cereals and leys

#

## TGW

† /# %SOC, %N

# cultivars, fertilizer, dates

Highfield ley-arable (1948 -) cereals and leys

#

## TGW

† / # %SOC, %N

# cultivars, fertilizer, dates

Highfield bare fallow (1959 -) no crop

††† %SOC, %N, pH, soil weight

††† dates

Highfield conversion (2008 -) grass, arable, bare fallow

#

#

Long-term liming (1962-1996) arable crops

†††

†††

††† pH, Olsen P

# exchangeable cations

††† lime, crops fertilizers, dates

† plans

Amounts of straw (1987-2017) wheat

##

##

## %SOC

Continuous maize (1997-2015) forage maize

##

##

##

Long-term Miscanthus (1993-) Miscanthus

##

##

##

Woburn (Bedfordshire)

Woburn ley-arable (1938 -) cereals and leys

††† wheat

# others

## %N

## TGW

††† %SOC, %N

††† cropping

† plans, treatments, dates

Woburn continuous barley (1876-1966) barley

†††

††† pH, %SOC, %N, P, exchangeable Ca

††† lime, fertilizers, dates

† plans

Woburn continuous wheat (1876-1966) wheat

†††

††† pH, %SOC, %N, P, exchangeable Ca

††† lime, fertilizers, dates

† plans

Woburn intensive cereals (1966-1990) cereals

##

##

##

Woburn market garden (1942-2006) various crops, heavy metals / sewage sludge studies

##

##

##

Woburn green manuring rotation (1936-1963)

arable crops

##

##

##

summary data and description in papers

Woburn organic manuring (1964 -) arable crops

##

##

## TGW

## %SOC, %N

Long-term liming (1962-1996) arable crops

†††

†††

††† pH, Olsen P

# exchangeable cations

††† lime, crops fertilizers, dates

† plans

Woburn long-term sludge experiments (1994- ) wheat

##

##

##

Amounts of straw (1987-2017) wheat

##

##

## %SOC

Continuous maize (1997-2015) forage maize

##

##

##

Erosion experiment (1988-1998) arable rotation

#

# soil loss, runoff, P and C loss

summary data and description in papers

Saxmundham (Suffolk)

Saxmundham rotation 1 (1965-2010) arable crops

##

##

##

Saxmundham rotation 2 (1965-2010) arable crops

†

† P uptake

† %SOC, pH, exchangeable K

† plans, treatments, papers