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Edaphic fauna in soil profile after three decades of different soil management and cover crops in a subtropical region

Authors :
RODRIGO F. RAMOS
IVAN R.C. KROLOW
DANIELA R.V. KROLOW
TÂNIA BEATRIZ G.A. MORSELLI
ADEMIR CALEGARI
NARIANE DE ANDRADE
ZAIDA I. ANTONIOLLI
DANILO S. RHEINHEIMER
Source :
Anais da Academia Brasileira de Ciências, Vol 95, Iss 2 (2023)
Publication Year :
2023
Publisher :
Academia Brasileira de Ciências, 2023.

Abstract

Abstract This research evaluated the effects of long-term (30 years) winter cover crops under conventional farming system and no-tillage system on edaphic fauna in a Rhodic Hapludox soil, from Paraná State, Brazil. We used three winter cover crops (black oat, hairy vetch and fallow), and as a reference a fragment of natural forest. Soil monoliths were collected at two times, one during the flowering of maize (April 2013) and the other during the flowering of soybean (January 2014). The extraction of the monoliths was carried out in three layers in the soil profile (0-10, 10-20 and 20-30 cm). Seventeen taxonomic groups were sampled. The density of the edaphic fauna is inversely related to soil depth. The winter crops associated with the no-tillage system in long-term resulted in fauna densities similar to the natural environment, with a higher density (density increase of 2.2x) at a depth of 10-20 cm in areas with black oat. At 0-10 cm depth, black oat and vetch under no-tillage systems resulted in an increase of 62% and 69% (April 2013) and 46 and 44% (January 2014), respectively, in the density of soil fauna, when compared to the same winter crops in conventional farming system.

Details

Language :
English
ISSN :
16782690 and 00013765
Volume :
95
Issue :
2
Database :
Directory of Open Access Journals
Journal :
Anais da Academia Brasileira de Ciências
Publication Type :
Academic Journal
Accession number :
edsdoj.54c26fdead794c59ad0fdb1c1ab2e95f
Document Type :
article
Full Text :
https://doi.org/10.1590/0001-3765202320201667