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3, 4‐Dimethylpyrazole phosphate reduces nitrous oxide emissions from grassland after slurry application
Author(s) -
Merino P.,
Menéndez S.,
Pinto M.,
GonzálezMurua C.,
Estavillo J.M.
Publication year - 2005
Publication title -
soil use and management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.709
H-Index - 81
eISSN - 1475-2743
pISSN - 0266-0032
DOI - 10.1111/j.1475-2743.2005.tb00106.x
Subject(s) - nitrous oxide , slurry , nitrification , chemistry , ammonium , agronomy , phosphate , zoology , environmental science , forage , grassland , nitrogen , environmental chemistry , environmental engineering , biology , organic chemistry
. A field study was conducted to assess the effect of the nitrification inhibitor 3,4‐dimethylpyrazole phosphate (DMPP), applied at a rate of 1 kg ha −1 , on nitrous oxide (N 2 O) emissions, forage production and N extraction from a grassland soil after cattle slurry applications in autumn and spring. Nitrous oxide emissions were measured daily or weekly using the closed chamber technique. DMPP efficiency after slurry application was lower in spring (16.7 °C mean soil temperature) than in autumn (11.4 °C mean soil temperature). Thus, DMPP was able to maintain soil mineral N in the ammonium form for 22 days and reduce cumulative N 2 O emissions by 69% in autumn, while in spring its effect on soil mineral N lasted for 7–14 days, reducing cumulative N 2 O losses by 48%. Furthermore, application of DMPP after slurry did not decrease biomass yield or N uptake.