TY  - DATA  
TI  - Park Grass Experiment organic manure chemical composition 1856-2017 
CY  - Electronic Rothamsted Archive, Rothamsted Research 
DB  - e-RA - the electronic Rothamsted Archive 
PY  - 2024 
DP  - Rothamsted Research, Harpenden, Herts, AL5 2JQ, UK. 
M3  - xlsx 
ET  - 1.0 
LA  - None 
UR  - https://doi.org/10.23637/rpg5-FYM-01 
DO  - 10.23637/rpg5-FYM-01 
AU  - Glendining, Margaret 
AU  - Gregory, Andy 
AU  - Poulton, Paul 
AU  - Wilmer, Wendy 
KW  - farmyard manure, nitrogen content, phosphorous, Rothamsted Research, Park grass long-term experiment, fish meal, poultry manure, 
AB  - Details of the chemical composition of the organic manures applied to the Park Grass Experiment, 1856-2017. Farmyard manure (FYM) has been applied one year in four since 1905 at 35t/ha to plots 13, 19 and 20, from cattle housed on cereal straw. Fishmeal was applied one year in four to plot 13, 1907 - 1999, then replaced by poultry manure from 2003. The fishmeal/poultry meal has been analysed routinely since 1931, the FYM since 1969.  This dataset gives details of the chemical composition: % total N, P, K, Ca, Mg, Na and S, and %C for FYM, and the total amount of each element applied. There is also limited mean data for earlier periods and trace element data for fishmeal in 1983.    



In the early years of the experiment, straw, sawdust and FYM were applied annually to other plots: FYM (plots 1 and 2) 1856-1863; straw (plot 13) 1856-1897; sawdust (plots 4, 6, 8 and 10) 1856-1862. There is limited information about these early applications.



The FYM applied every four years supplies on average 230 kgN/ha, 47 kgP/ha and 283 kgK/ha; the fishmeal/poultry manure 64 kgN/ha, 20 kgP/ha and  14 kgK/ha. For comparison, the standard inorganic fertilizer treatments on Park Grass receive 0-144 kgN/ha, 17 kgP/ha since 2017 (previously 35kgP/ha), and 90 kgK/ha.  
ER  -