Park Grass Plots

Part of experiment rpg5

Park Grass Long-term Experiment is on a permanent un-grazed grassland. Since 1856 its various plots have received differing fertilizer and manure treatments and from 1903 sub-plots have received lime to adjust the pH of the soils. These differing treatment applications have resulted in dramatic differences in species composition, in what had previously been a uniform sward.

Read more and download this dataset: https://doi.org/10.23637/rpg5-plotphotos-01

Click on individual images below to view and download selected sub-plot photos

pH = 7

pH = 6

pH = 5

no Lime

No nitrogen group

Plot: 3

Treatment: nil

Plot 3a - nil - Lime to pH - 39 species - height of plants 125 mm Plot 3a - nil - Lime to pH - 39 species - height of plants 125 mm
Plot 3b - nil - Lime to pH - 36 species - height of plants 125 mm Plot 3b - nil - Lime to pH - 36 species - height of plants 125 mm
Plot 3c - nil - Lime to pH - 37 species - height of plants 125 mm Plot 3c - nil - Lime to pH - 37 species - height of plants 125 mm
Plot 3d - nil - No Lime - 36 species - height of plants 125 mm Plot 3d - nil - No Lime - 36 species - height of plants 125 mm

Plot: 12

Treatment: nil

Plot 12a - nil - Lime to pH - 44 species - height of plants 225 mm Plot 12a - nil - Lime to pH - 44 species - height of plants 225 mm
Plot 12b - nil - Lime to pH - 42 species - height of plants 175 mm Plot 12b - nil - Lime to pH - 42 species - height of plants 175 mm
Plot 12c - nil - Lime to pH - 37 species - height of plants 150 mm Plot 12c - nil - Lime to pH - 37 species - height of plants 150 mm
Plot 12d - nil - No Lime - 42 species - height of plants 150 mm Plot 12d - nil - No Lime - 42 species - height of plants 150 mm

Plot: 2-1

Treatment: Nil then K since 1996

Plot 2-1a - Nil then K since 1996 - Lime to pH - species - height of plants 150 mm Plot 2-1a - Nil then K since 1996 - Lime to pH - species - height of plants 150 mm
Plot 2-1b - Nil then K since 1996 - Lime to pH - species - height of plants 225 mm Plot 2-1b - Nil then K since 1996 - Lime to pH - species - height of plants 225 mm
Plot 2-1c - Nil then K since 1996 - Lime to pH - species - height of plants 100 mm Plot 2-1c - Nil then K since 1996 - Lime to pH - species - height of plants 100 mm
Plot 2-1d - Nil then K since 1996 - No Lime - species - height of plants 150 mm Plot 2-1d - Nil then K since 1996 - No Lime - species - height of plants 150 mm

Plot: 2-2

Treatment: nil

Plot 2-2a - nil - Lime to pH - 42 species - height of plants 125 mm Plot 2-2a - nil - Lime to pH - 42 species - height of plants 125 mm
Plot 2-2b - nil - Lime to pH - 37 species - height of plants 175 mm Plot 2-2b - nil - Lime to pH - 37 species - height of plants 175 mm
Plot 2-2c - nil - Lime to pH - 33 species - height of plants 150 mm Plot 2-2c - nil - Lime to pH - 33 species - height of plants 150 mm
Plot 2-2d - nil - No Lime - 33 species - height of plants 175 mm Plot 2-2d - nil - No Lime - 33 species - height of plants 175 mm

Plot: 4-1

Treatment: P

Plot 4-1a - P - Lime to pH - 34 species - height of plants 200 mm Plot 4-1a - P - Lime to pH - 34 species - height of plants 200 mm
Plot 4-1b - P - Lime to pH - 34 species - height of plants 200 mm Plot 4-1b - P - Lime to pH - 34 species - height of plants 200 mm
Plot 4-1c - P - Lime to pH - 29 species - height of plants 150 mm Plot 4-1c - P - Lime to pH - 29 species - height of plants 150 mm
Plot 4-1d - P - No Lime - 32 species - height of plants 200 mm Plot 4-1d - P - No Lime - 32 species - height of plants 200 mm

Plot: 7-1

Treatment: (P)KNaMg since 2013

Plot 7-1a - (P)KNaMg since 2013 - Lime to pH - species - height of plants 550 mm Plot 7-1a - (P)KNaMg since 2013 - Lime to pH - species - height of plants 550 mm
Plot 7-1b - (P)KNaMg since 2013 - Lime to pH - species - height of plants 350 mm Plot 7-1b - (P)KNaMg since 2013 - Lime to pH - species - height of plants 350 mm
Plot 7-1c - (P)KNaMg since 2013 - Lime to pH - species - height of plants 275 mm Plot 7-1c - (P)KNaMg since 2013 - Lime to pH - species - height of plants 275 mm
Plot 7-1d - (P)KNaMg since 2013 - No Lime - species - height of plants 175 mm Plot 7-1d - (P)KNaMg since 2013 - No Lime - species - height of plants 175 mm

Plot: 7-2

Treatment: PKNaMg

Plot 7-2a - PKNaMg - Lime to pH - 27 species - height of plants 500 mm Plot 7-2a - PKNaMg - Lime to pH - 27 species - height of plants 500 mm
Plot 7-2b - PKNaMg - Lime to pH - 29 species - height of plants 325 mm Plot 7-2b - PKNaMg - Lime to pH - 29 species - height of plants 325 mm
Plot 7-2c - PKNaMg - Lime to pH - 28 species - height of plants 275 mm Plot 7-2c - PKNaMg - Lime to pH - 28 species - height of plants 275 mm
Plot 7-2d - PKNaMg - No Lime - 28 species - height of plants 175 mm Plot 7-2d - PKNaMg - No Lime - 28 species - height of plants 175 mm

Plot: 8

Treatment: PNaMg

Plot 8a - PNaMg - Lime to pH - 36 species - height of plants 150 mm Plot 8a - PNaMg - Lime to pH - 36 species - height of plants 150 mm
Plot 8b - PNaMg - Lime to pH - 37 species - height of plants 175 mm Plot 8b - PNaMg - Lime to pH - 37 species - height of plants 175 mm
Plot 8c - PNaMg - Lime to pH - 32 species - height of plants 125 mm Plot 8c - PNaMg - Lime to pH - 32 species - height of plants 125 mm
Plot 8d - PNaMg - No Lime - 29 species - height of plants 125 mm Plot 8d - PNaMg - No Lime - 29 species - height of plants 125 mm

Ammonium N group

Plot: 1

Treatment: N1

Plot 1a - N1 - Lime to pH - 33 species - height of plants 150 mm Plot 1a - N1 - Lime to pH - 33 species - height of plants 150 mm
Plot 1b - N1 - Lime to pH - 31 species - height of plants 100 mm Plot 1b - N1 - Lime to pH - 31 species - height of plants 100 mm
Plot 1c - N1 - Lime to pH - 33 species - height of plants 175 mm Plot 1c - N1 - Lime to pH - 33 species - height of plants 175 mm
Plot 1d - N1 - No Lime - 10 species - height of plants 325 mm Plot 1d - N1 - No Lime - 10 species - height of plants 325 mm

Plot: 10

Treatment: N2PNaMg

Plot 10a - N2PNaMg - Lime to pH - 23 species - height of plants 350 mm Plot 10a - N2PNaMg - Lime to pH - 23 species - height of plants 350 mm
Plot 10b - N2PNaMg - Lime to pH - 15 species - height of plants 350 mm Plot 10b - N2PNaMg - Lime to pH - 15 species - height of plants 350 mm
Plot 10c - N2PNaMg - Lime to pH - 16 species - height of plants 350 mm Plot 10c - N2PNaMg - Lime to pH - 16 species - height of plants 350 mm
Plot 10d - N2PNaMg - No Lime - 4 species - height of plants 275 mm Plot 10d - N2PNaMg - No Lime - 4 species - height of plants 275 mm

Plot: 11-1

Treatment: N3PKNaMg

Plot 11-1a - N3PKNaMg - Lime to pH - 14 species - height of plants 625 mm Plot 11-1a - N3PKNaMg - Lime to pH - 14 species - height of plants 625 mm
Plot 11-1b - N3PKNaMg - Lime to pH - 15 species - height of plants 625 mm Plot 11-1b - N3PKNaMg - Lime to pH - 15 species - height of plants 625 mm
Plot 11-1c - N3PKNaMg - Lime to pH - 13 species - height of plants 625 mm Plot 11-1c - N3PKNaMg - Lime to pH - 13 species - height of plants 625 mm
Plot 11-1d - N3PKNaMg - No Lime - 3 species - height of plants 150 mm Plot 11-1d - N3PKNaMg - No Lime - 3 species - height of plants 150 mm

Plot: 11-2

Treatment: N3PKNaMgSi

Plot 11-2a - N3PKNaMgSi - Lime to pH - 14 species - height of plants 850 mm Plot 11-2a - N3PKNaMgSi - Lime to pH - 14 species - height of plants 850 mm
Plot 11-2b - N3PKNaMgSi - Lime to pH - 10 species - height of plants 775 mm Plot 11-2b - N3PKNaMgSi - Lime to pH - 10 species - height of plants 775 mm
Plot 11-2c - N3PKNaMgSi - Lime to pH - 13 species - height of plants 350 mm Plot 11-2c - N3PKNaMgSi - Lime to pH - 13 species - height of plants 350 mm
Plot 11-2d - N3PKNaMgSi - No Lime - 4 species - height of plants 150 mm Plot 11-2d - N3PKNaMgSi - No Lime - 4 species - height of plants 150 mm

Plot: 18

Treatment: N2KNaMg

Plot 18a - N2KNaMg - Lime to pH - 30 species - height of plants 150 mm Plot 18a - N2KNaMg - Lime to pH - 30 species - height of plants 150 mm
Plot 18b - N2KNaMg - Lime to pH - 29 species - height of plants 150 mm Plot 18b - N2KNaMg - Lime to pH - 29 species - height of plants 150 mm
Plot 18c - N2KNaMg - Lime to pH - 21 species - height of plants 150 mm Plot 18c - N2KNaMg - Lime to pH - 21 species - height of plants 150 mm
Plot 18d - N2KNaMg - No Lime - 6 species - height of plants 150 mm Plot 18d - N2KNaMg - No Lime - 6 species - height of plants 150 mm

Plot: 4-2

Treatment: N2P

Plot 4-2a - N2P - Lime to pH - 22 species - height of plants 175 mm Plot 4-2a - N2P - Lime to pH - 22 species - height of plants 175 mm
Plot 4-2b - N2P - Lime to pH - 14 species - height of plants 200 mm Plot 4-2b - N2P - Lime to pH - 14 species - height of plants 200 mm
Plot 4-2c - N2P - Lime to pH - 18 species - height of plants 175 mm Plot 4-2c - N2P - Lime to pH - 18 species - height of plants 175 mm
Plot 4-2d - N2P - No Lime - 10 species - height of plants 200 mm Plot 4-2d - N2P - No Lime - 10 species - height of plants 200 mm

Plot: 6

Treatment: N1PKNaMg

Plot 6a - N1PKNaMg - Lime to pH - species - height of plants 500 mm Plot 6a - N1PKNaMg - Lime to pH - species - height of plants 500 mm
Plot 6b - N1PKNaMg - Lime to pH - species - height of plants 500 mm Plot 6b - N1PKNaMg - Lime to pH - species - height of plants 500 mm
Plot 6- - - - Lime to pH - species - height of plants mm Plot 6- - - - Lime to pH - species - height of plants mm
Plot 6- - - - Lime to pH - species - height of plants mm Plot 6- - - - Lime to pH - species - height of plants mm

Plot: 9-1

Treatment: (N2)PKNaMg since 1990

Plot 9-1a - (N2)PKNaMg since 1990 - Lime to pH - 22 species - height of plants 550 mm Plot 9-1a - (N2)PKNaMg since 1990 - Lime to pH - 22 species - height of plants 550 mm
Plot 9-1b - (N2)PKNaMg since 1990 - Lime to pH - 17 species - height of plants 450 mm Plot 9-1b - (N2)PKNaMg since 1990 - Lime to pH - 17 species - height of plants 450 mm
Plot 9-1c - (N2)PKNaMg since 1990 - Lime to pH - 18 species - height of plants 225 mm Plot 9-1c - (N2)PKNaMg since 1990 - Lime to pH - 18 species - height of plants 225 mm
Plot 9-1d - (N2)PKNaMg since 1990 - No Lime - 4 species - height of plants 275 mm Plot 9-1d - (N2)PKNaMg since 1990 - No Lime - 4 species - height of plants 275 mm

Plot: 9-2

Treatment: N2PKNaMg

Plot 9-2a - N2PKNaMg - Lime to pH - 22 species - height of plants 550 mm Plot 9-2a - N2PKNaMg - Lime to pH - 22 species - height of plants 550 mm
Plot 9-2b - N2PKNaMg - Lime to pH - 17 species - height of plants 450 mm Plot 9-2b - N2PKNaMg - Lime to pH - 17 species - height of plants 450 mm
Plot 9-2c - N2PKNaMg - Lime to pH - 18 species - height of plants 225 mm Plot 9-2c - N2PKNaMg - Lime to pH - 18 species - height of plants 225 mm
Plot 9-2d - N2PKNaMg - No Lime - 4 species - height of plants 250 mm Plot 9-2d - N2PKNaMg - No Lime - 4 species - height of plants 250 mm

Nitrate N group

Plot: 14-1

Treatment: (N*2)PKNaMg since 1990

Plot 14-1a - (N*2)PKNaMg since 1990 - Lime to pH - species - height of plants 700 mm Plot 14-1a - (N*2)PKNaMg since 1990 - Lime to pH - species - height of plants 700 mm
Plot 14-1b - (N*2)PKNaMg since 1990 - Lime to pH - species - height of plants 600 mm Plot 14-1b - (N*2)PKNaMg since 1990 - Lime to pH - species - height of plants 600 mm
Plot 14-1c - (N*2)PKNaMg since 1990 - Lime to pH - species - height of plants 450 mm Plot 14-1c - (N*2)PKNaMg since 1990 - Lime to pH - species - height of plants 450 mm
Plot 14-1d - (N*2)PKNaMg since 1990 - No Lime - species - height of plants 550 mm Plot 14-1d - (N*2)PKNaMg since 1990 - No Lime - species - height of plants 550 mm

Plot: 14-2

Treatment: N*2PKNaMg

Plot 14-2a - N*2PKNaMg - Lime to pH - 24 species - height of plants 700 mm Plot 14-2a - N*2PKNaMg - Lime to pH - 24 species - height of plants 700 mm
Plot 14-2b - N*2PKNaMg - Lime to pH - 24 species - height of plants 750 mm Plot 14-2b - N*2PKNaMg - Lime to pH - 24 species - height of plants 750 mm
Plot 14-2c - N*2PKNaMg - Lime to pH - 21 species - height of plants 700 mm Plot 14-2c - N*2PKNaMg - Lime to pH - 21 species - height of plants 700 mm
Plot 14-2d - N*2PKNaMg - No Lime - 22 species - height of plants 675 mm Plot 14-2d - N*2PKNaMg - No Lime - 22 species - height of plants 675 mm

Plot: 15

Treatment: PKNaMG +N*3 since 2013

Plot 15a - PKNaMG +N*3 since 2013 - Lime to pH - 28 species - height of plants 900 mm Plot 15a - PKNaMG +N*3 since 2013 - Lime to pH - 28 species - height of plants 900 mm
Plot 15b - PKNaMG +N*3 since 2013 - Lime to pH - 27 species - height of plants 775 mm Plot 15b - PKNaMG +N*3 since 2013 - Lime to pH - 27 species - height of plants 775 mm
Plot 15c - PKNaMG +N*3 since 2013 - Lime to pH - 26 species - height of plants 775 mm Plot 15c - PKNaMG +N*3 since 2013 - Lime to pH - 26 species - height of plants 775 mm
Plot 15d - PKNaMG +N*3 since 2013 - No Lime - 27 species - height of plants 650 mm Plot 15d - PKNaMG +N*3 since 2013 - No Lime - 27 species - height of plants 650 mm

Plot: 16

Treatment: N*1PKNaMg

Plot 16a - N*1PKNaMg - Lime to pH - 25 species - height of plants 270 mm Plot 16a - N*1PKNaMg - Lime to pH - 25 species - height of plants 270 mm
Plot 16b - N*1PKNaMg - Lime to pH - 25 species - height of plants 250 mm Plot 16b - N*1PKNaMg - Lime to pH - 25 species - height of plants 250 mm
Plot 16c - N*1PKNaMg - Lime to pH - 23 species - height of plants 250 mm Plot 16c - N*1PKNaMg - Lime to pH - 23 species - height of plants 250 mm
Plot 16d - N*1PKNaMg - No Lime - 27 species - height of plants 240 mm Plot 16d - N*1PKNaMg - No Lime - 27 species - height of plants 240 mm

Plot: 17

Treatment: N*1

Plot 17a - N*1 - Lime to pH - 32 species - height of plants 220 mm Plot 17a - N*1 - Lime to pH - 32 species - height of plants 220 mm
Plot 17b - N*1 - Lime to pH - 34 species - height of plants 160 mm Plot 17b - N*1 - Lime to pH - 34 species - height of plants 160 mm
Plot 17c - N*1 - Lime to pH - 34 species - height of plants 170 mm Plot 17c - N*1 - Lime to pH - 34 species - height of plants 170 mm
Plot 17d - N*1 - No Lime - 34 species - height of plants 175 mm Plot 17d - N*1 - No Lime - 34 species - height of plants 175 mm

FYM group

Plot: 13-1

Treatment: FYM/FM since 1996

Plot 13-1a - FYM/FM since 1996 - Lime to pH - species - height of plants 200 mm Plot 13-1a - FYM/FM since 1996 - Lime to pH - species - height of plants 200 mm
Plot 13-1b - FYM/FM since 1996 - Lime to pH - species - height of plants 300 mm Plot 13-1b - FYM/FM since 1996 - Lime to pH - species - height of plants 300 mm
Plot 13-1c - FYM/FM since 1996 - Lime to pH - species - height of plants 250 mm Plot 13-1c - FYM/FM since 1996 - Lime to pH - species - height of plants 250 mm
Plot 13-1d - FYM/FM since 1996 - No Lime - species - height of plants 175 mm Plot 13-1d - FYM/FM since 1996 - No Lime - species - height of plants 175 mm

Plot: 13-2

Treatment: FYM/PM

Plot 13-2a - FYM/PM - Lime to pH - 28 species - height of plants 450 mm Plot 13-2a - FYM/PM - Lime to pH - 28 species - height of plants 450 mm
Plot 13-2b - FYM/PM - Lime to pH - 30 species - height of plants 575 mm Plot 13-2b - FYM/PM - Lime to pH - 30 species - height of plants 575 mm
Plot 13-2c - FYM/PM - Lime to pH - 32 species - height of plants 500 mm Plot 13-2c - FYM/PM - Lime to pH - 32 species - height of plants 500 mm
Plot 13-2d - FYM/PM - No Lime - 34 species - height of plants 550 mm Plot 13-2d - FYM/PM - No Lime - 34 species - height of plants 550 mm

Plot: 19-1

Treatment: FYM

Plot 19-1- - FYM - Lime to pH - species - height of plants mm Plot 19-1- - FYM - Lime to pH - species - height of plants mm
Plot 19-1- - FYM - Lime to pH - species - height of plants mm Plot 19-1- - FYM - Lime to pH - species - height of plants mm
Plot 19-1- - FYM - Lime to pH - species - height of plants mm Plot 19-1- - FYM - Lime to pH - species - height of plants mm
Plot 19-1- - FYM - No Lime - 31 species - height of plants 400 mm Plot 19-1- - FYM - No Lime - 31 species - height of plants 400 mm

Plot: 19-2

Treatment: FYM

Plot 19-2- - FYM - Lime to pH - species - height of plants mm Plot 19-2- - FYM - Lime to pH - species - height of plants mm
Plot 19-2- - FYM - Lime to pH - species - height of plants mm Plot 19-2- - FYM - Lime to pH - species - height of plants mm
Plot 19-2- - FYM - Lime to pH - species - height of plants mm Plot 19-2- - FYM - Lime to pH - species - height of plants mm
Plot 19-2- - FYM - No Lime - 30 species - height of plants 500 mm Plot 19-2- - FYM - No Lime - 30 species - height of plants 500 mm

Plot: 19-3

Treatment: FYM

Plot 19-3- - FYM - Lime to pH - species - height of plants mm Plot 19-3- - FYM - Lime to pH - species - height of plants mm
Plot 19-3- - FYM - Lime to pH - species - height of plants mm Plot 19-3- - FYM - Lime to pH - species - height of plants mm
Plot 19-3- - FYM - Lime to pH - species - height of plants mm Plot 19-3- - FYM - Lime to pH - species - height of plants mm
Plot 19-3- - FYM - No Lime - 27 species - height of plants 425 mm Plot 19-3- - FYM - No Lime - 27 species - height of plants 425 mm

Plot: 20-1

Treatment: FYM/N*PK

Plot 20-1- - FYM/N*PK - Lime to pH - species - height of plants mm Plot 20-1- - FYM/N*PK - Lime to pH - species - height of plants mm
Plot 20-1- - FYM/N*PK - Lime to pH - species - height of plants mm Plot 20-1- - FYM/N*PK - Lime to pH - species - height of plants mm
Plot 20-1- - FYM/N*PK - Lime to pH - species - height of plants mm Plot 20-1- - FYM/N*PK - Lime to pH - species - height of plants mm
Plot 20-1- - FYM/N*PK - No Lime - 27 species - height of plants 525 mm Plot 20-1- - FYM/N*PK - No Lime - 27 species - height of plants 525 mm

Plot: 20-2

Treatment: FYM/N*PK

Plot 20-2- - FYM/N*PK - Lime to pH - species - height of plants mm Plot 20-2- - FYM/N*PK - Lime to pH - species - height of plants mm
Plot 20-2- - FYM/N*PK - Lime to pH - species - height of plants mm Plot 20-2- - FYM/N*PK - Lime to pH - species - height of plants mm
Plot 20-2- - FYM/N*PK - Lime to pH - species - height of plants mm Plot 20-2- - FYM/N*PK - Lime to pH - species - height of plants mm
Plot 20-2- - FYM/N*PK - No Lime - 29 species - height of plants 625 mm Plot 20-2- - FYM/N*PK - No Lime - 29 species - height of plants 625 mm

Plot: 20-3

Treatment: FYM/N*PK

Plot 20-3- - FYM/N*PK - Lime to pH - species - height of plants mm Plot 20-3- - FYM/N*PK - Lime to pH - species - height of plants mm
Plot 20-3- - FYM/N*PK - Lime to pH - species - height of plants mm Plot 20-3- - FYM/N*PK - Lime to pH - species - height of plants mm
Plot 20-3- - FYM/N*PK - Lime to pH - species - height of plants mm Plot 20-3- - FYM/N*PK - Lime to pH - species - height of plants mm
Plot 20-3- - FYM/N*PK - No Lime - 26 species - height of plants 525 mm Plot 20-3- - FYM/N*PK - No Lime - 26 species - height of plants 525 mm
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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