Section 71
Chapter 70,752

Effects of repeated applications of farm fertilisers on fertility-related physical, chemical, and microbiological properties of soils in ley-arable rotations and temporary pastures

Bouthier, A.; Trochard, R.

Fourrages 223: 211-219


ISSN/ISBN: 0429-2766
Accession: 070751974

What are the long-term effects of using livestock effluent as fertiliser on the physical, chemical, and microbiological properties of soils? Using data from 2 experimental sites, we compared the impacts of different farm fertilisers (raw and composted manure from cattle, swine, and poultry as well as liquid swine manure) on 2 types of crop systems (a ley-arable rotation and a grassland). In contrast to when only mineral fertilisers were used, the regular application of raw or composted manure significantly increased levels of C and N in the soil and changed the composition of the organic matter (according to the granulometric fractions) found in the plough layer. These changes could enhance the mineralisation of organic nitrogen in the soil and modify certain properties of the plough layer (e.g., increased hydraulic conductivity, which is associated with greater macroporosily, and increased levels of P, K, and Mg). We observed no significant differences due to farm manure type.

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