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Manipulating the N release from N‐rich crop residues by using organic wastes on soils with different textures
Author(s) -
Chaves B.,
De Neve S.,
Piulats L. M.,
Boeckx P.,
Van Cleemput O.,
Hofman G.
Publication year - 2007
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.1475-2743.2006.00063.x
Subject(s) - loam , agronomy , crop residue , soil water , straw , soil texture , compost , environmental science , sawdust , crop , biomass (ecology) , chemistry , soil science , biology , agriculture , ecology , organic chemistry
The potential to manipulate the N release from vegetable crop residues (cauliflower, leek) by using organic wastes was tested under field conditions on three soil textures during 2 years (silt loam, sandy loam and loamy sand). During the first year, incorporation of green waste compost and sawdust did not significantly increase microbial biomass N and did not lead to a significant N immobilization of crop residue‐N. During the second year, straw did increase microbial biomass N and showed a good N immobilization potential in all textures. The largest increase in microbial biomass N and the greatest N immobilization occurred in the loamy sand soil. The texture effect was probably because of better incorporation of the crop residues and immobilizer wastes in the loamy sand soil compared with the other textures. During spring, there was no consistent remineralization of immobilized N after the addition of malting sludge or vinasses in either year. This could be a result of the limited amount of N immobilized and available for remineralization in the first year or an unsuitable composition of the remineralizer wastes.