Mattila, Pasi K. (2006) Spring barley yield and nitrogen recovery after application of peat manure and pig slurry. Agricultural and Food Science, 15 (2), pp. 124-137.
- Published Version
The effectiveness of peat manure, manufactured of pig slurry and moderately humified Sphagnum peat (slurry:peat ca. 1:1.5 v/v), as nitrogen (N) source for spring barley was investigated in a four.year field experiment on a clay loam soil in south-western Finland. Pig slurry, NPK fertilizer and plain peat were used as references. Manures were incorporated before sowing or surface-applied after sowing in spring at an ammoniacal N rate of.54.106 kg.ha-1 with or without supplementary NPK fertilizer (40.kg N.ha-1). Soil moisture conditions were varied by different irrigation treatments. Peat manure produced 5.15% higher grain yields than pig slurry, with the largest difference after surface application. Incorporation was more important for slurry than for peat manure in increasing N uptake and yield. Soil moisture deficit in spring and early summer limited the availability of manure N. Part of the manure N that was not available in the early growing period was apparently taken up by the crop later. Consequently, N concentration tended to be higher with lower yields, and differences in the recovery of manure N were smaller than the differences in grain yield. Supplementation of manures with inorganic fertilizer N increased yield by 37%, on average, and improved the N recovery.
|EPrint Type:||Journal paper|
|Keywords:||nitrogen, manures, slurries, peat, barley,|
|Subjects:||Crop husbandry > Composting and manuring|
|Research affiliation:||Finland > Univ. Helsinki|
|Deposited By:||Koistinen, Riitta|
|Deposited On:||08 Mar 2010 10:40|
|Last Modified:||12 Apr 2010 07:43|
|Refereed:||Peer-reviewed and accepted|
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