The Park Grass Experiment on the effect of fertilisers and liming on the botanical composition of permanent grassland and on yields of hay

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Thurston, J. M., Dyke, G. V., Williams , E. D. and Snaydon, R. W. 1976. The Park Grass Experiment on the effect of fertilisers and liming on the botanical composition of permanent grassland and on yields of hay. Harpenden Rothamsted Research.

Authors	Thurston, J. M., Dyke, G. V., Williams , E. D. and Snaydon, R. W.
Keywords	LTE ; Park grass experiment
Digital Object Identifier (DOI)	https://doi.org/10.23637/rothamsted.99118
Open access	Published as bronze (free) open access
Publisher's version	3449_001.pdf
File	1Plan 1981.jpg 2. Aerial photograph looking SW 27th June 1964.jpg 3. Plot 12 left, plot 11-1 right 21st August 1964. Left unmanured, right back PKNaMg and ammonium sulphate, unlimed; right front as above but limed. Regrowth after first cut.jpg 4. Plot 12 unmanured 21st August 1964.jpg 5. Plot 11- 2 unlimed 21st August 1964. Complete fertiliseres N as ammonium suphate no lime. Pure stand of Yorkshire fog (Holcus lanatus).jpg 6. Plot 11 - 2 Limed 21st August 1964. Complete fertilisers with lime. N as ammonium sulphate.jpg 7. Plot 12 (unmanured) with cowslip etc. 10th May 1965.jpg 8. Plot 11-2 limed 10th June 1965. PKNaMg plus lime with N as ammonium sulphate.jpg 9. Plot 14 unlimed 2nd June 1966. PKNaMg with N as sodium nitrate.jpg 10. Seedlings of Yorkshire fog on Plot 11 Unlimed 24th April 1965. Complete feretilisers, high N as ammonium sulphate. No lime.jpg 11. Plot 4 - 2 Unlimed 5th August 1961. Nas ammonium sulphate and P only. Water lying on top of dry peat layer.jpg 12. Plot 11 - 2 Unlimed Complete fertilisers Na s ammonium sulphate. Yellow patches due to loosening of peat mat.jpg 13. Plot 10 unlimed 19th November 1956. N as ammonium sulphate. P Na Mg No K. Sweet vernal grass yellowed by frost.jpg 14. Plots 9 & 10 Unlimed 2nd June 1966. Both receive P Na Mg and N as ammonium sulphate, with K on left without on right.jpg 15. Plot 10 limed. Contrast Slide 14 right.jpg 16. Plot 4 - 2 Unlimed 23rd April 1965. N as ammonium sulphate plus P. No K, Na or Mg).jpg 17. Plot 4 - 2d ,24th April 1965. Contrast with Slide 16.jpg 18. Plot 4 - 2d. Unlimed 9th June 1967. N as ammonium sulphate and P only. Growth 6 weeks later than slide 16.jpg 19. Plots 11 - 1c and 11 - 1d. 18th April 1969. Complete fertilisers, N as ammonium sulphate, Unlimed at back, new liming from 1965 in front.jpg 20. Plots 1 unlimed and 14 Unlimed 10th June 1965. Plot in foreground, ammonium sulphate only, Plot 14 in background P, K, Na, Mg, N as sodium nitrate.jpg 21. Plot 1 unlimed (plot 14 unlimed left foreground and plot 1 limed left background. Ammonium sulphate only. Bronze colour of grass.jpg 22. Plot 1 unlimed. Ammonium sulphate only. Too acid for earthworms so no mole hills.jpg 23. Plot 18 unlimed. Acid and P deficient. Whitis colour of grass is exceptional in very dry conditions.jpg 24. Plot 18 - 2 with dandelions. Ammonium sulphate, K Na Mg No P limed.jpg 25. Aerial view.jpg 26. Plot 7 limed 15th June 1956. P K Na Mg but no N, red clover, buttercups, hogweed etc.jpg 27. Plot 7 Limed. 11th June 1965.jpg 28. Plot 2 Limed but no fertilisers. 15th June 1956. Note red clover.jpg 29. Bugle 24th April 1957.jpg 30. Fritillary 10th May 1955.jpg 31. Dactylorchis fuchsii June 1964. First recorded 1963.jpg 32. Listera ovata June 1964. First recorded.jpg 33. Marasmius oreades.jpg 34. Adder's tongue fern 24th April 1957 On plot 2 (no fertiliser, limed).jpg
Year of Publication	1976
Publisher	Rothamsted Research
Place of publication	Harpenden
Output status	Published

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The Park Grass Experiment on the effect of fertilisers and liming on the botanical composition of permanent grassland and on yields of hay

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