Implications of agricultural management on the epigeic fauna and soil physical properties of a clayey Oxisol

Abstract

The intensive use of land based on non-conservation practices contributes to the reduction of soil quality. In this sense, the objective of this work was to evaluate the influence of farming systems on clayey Oxisol in the northwest of the state of Rio Grande do Sul on the epigeic fauna and on the soil physical properties. The treatments were composed of land use with Native field, Pasture, Transition, Crop and livestock integration, No-tillage and No-tillage system. The epigeic fauna was evaluated by the installation of seven traps per treatment. The physical properties of density, total porosity, microporosity, macroporosity and soil resistance to penetration were evaluated in samples with undisturbed structure at the 0- 0.07, 0.07-0.15 and 0.15- 0.22m depths, with four replicates. The results indicated that land use only for crop production reduced the abundance of organisms in comparison to the crop-livestock integration. The conversion of the Pampa Biome to the crop system altered its soil physical and biological properties with the transition area presenting intermediate characteristics to both environments. Grazing in the remaining areas of the Pampa Biome, without native field improvement strategies, reduced species abundance and richness. No-tillage and No-tillage system promoted the compaction of the 0.07 -0.15 m layer in a clayey Oxisol.

Effect of Different Forest Management Practices on the Soil Macrofauna in the Arboreal Caatinga

“…In Brazil, studies were carried out on the response of edaphic fauna to the vegetation dynamics in different biomes, such as Atlantic Forest, Cerrado, Amazon, and Pampa (MOÇO et al, 2005;SILVA et al, 2006;BARETTA et al, 2007;MARCHÃO et al, 2009;SCORIZA;CORREIA, 2016, HOFFMAN et al 2018DRESCHER, 2018). However, records of studies on the subject Caatinga biome are still few MENEZES, 2008;SOUTO et al, 2008;MENEZES, 2009;ARAÚJO et al, 2009), especially in areas under forest management.…”

Transforming the Farmer into a Rural Entrepreneur as a Path to Sustainability

“…In the international literature, there are numerous studies regarding management in rural properties. However, these studies, in general, deal with the management of aspects related to the production process, such as: effects of the management of agricultural practices about quality of the soil, including physical, chemical and microbial soil properties and on local flora and fauna [6][7][8][9]; the management of specific inputs, such as water and fertilizers [10,11]; and knowledge management [12]. There are also studies that evaluate strategies for the management of specific segments of agriculture and fisheries [13].…”

Impactos na variabilidade espacial da densidade e porosidade do solo em função da transformação de floresta em pastagem no Vale do Jamari, Rondônia

“…No trabalho de Oliveira et al (2008), os autores apontam que a pecuária é a principal força motriz do desmatamento em Rondônia e que grande parte das áreas que são desmatadas, têm seu uso iniciado com culturas anuais de subsistência e acabam sendo convertidas em pastagens. E quando não manejada adequadamente, causa mudanças drásticas nos atributos químicos e físicos do solo, podendo até degradá-lo Drescher, 2018). Para os atributos físicos do solo são alterados em função do manejo a que estão submetidos, podendo ser agravados pelo constante uso de implementos e tráfego de máquinas utilizado no preparo convencional do solo.…”