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Spring barley yield and nitrogen recovery after application of peat manure and pig slurry

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.

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Summary

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
ISSN:1795-1895
Related Links:http://www.mtt.fi/english
Deposited By: Koistinen, Riitta
ID Code:16814
Deposited On:08 Mar 2010 10:40
Last Modified:12 Apr 2010 07:43
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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