Impacts of land-use and management systems on organic carbon and water-physical properties of a Latossolo Amarelo (Oxisol)

Abstract

The Cerrado biome has outstanding territorial relevance in the state of Piauí, in which weather conditions, relief and favorable soil has made this region one reference in food production. This study focused to evaluate the effects of different land uses, management systems and their respective terms on organic carbon content and physical properties of a Latossolo Amarelo (Oxisol) in the Southwestern Piauí state. The study was performed in the city of Uruçuí, situated in the southwestern Piauí state. We assessed nine farming areas with different backgrounds regarding land-use, management system and run time. The treatments consisted of areas under no-till for 3 and 6 years (NT3 and NT6), under pasture for 2 and 5 years (PA2 and PA6), under eucalyptus plantation for six and twelve years (EU6 and EU12), under conventional tillage for two and 8 years (CT2 and CT8) and under native Cerrado (NC), which represented a reference condition. Conversion of the native Cerrado into no-till and grazing areas increased soil organic carbon content over time.

Land-Use Changes the Chemical and Physical Properties of an Oxisol in the Brazilian Cerrado

“…This effect possibly occurred due to the absence of traffic and trampling and the continuous accumulation of organic material on the soil (e.g., leaves and branches of plants), which results in increased soil porosity and, consequently, reduces the BD, confirmed by a significant negative correlation between BD and TP (Table 5). These results are corroborated by other authors (Silva, Santos, Silva, & Souza, 2015;Silva et al, 2017). At a depth of 0.2-0.3 m, the soil cultivated with sugar cane showed the highest BD, while the other treatments did not differ from the forest.…”

“…Several authors have reported that changes in the use and management of Cerrado soils have promoted significant changes in chemical, physical and biological attributes (Hunke, Roller, Zeilhofer, Schröder, & Mueller, 2015;Silva et al, 2017;Bonetti, Paulinho, Souza, Carneiro, & Caetano, 2018;Lobato et al, 2018;Dias, Hübner, Nunes, Leandro, & Xavier, 2019). In addition, these changes in soil properties have been accelerated by the intensification of agricultural systems (Hunke, Mueller, Schröder, & Zeilhofer, 2014;Moklyachuk, Yatsuk, & Draga, 2015).…”

Fast immersion to test the stability of aggregates in water: consequences for interpreting results from tropical soil classes

“…The soil is one of the most heavily exploited natural resources (Fernandez, 2006), and the implementation of agricultural systems with inadequately understood effects on the soil can lead to environmental degradation (Roth & Pavan, 1991;Silva Neto, Silva, Inda, Nascimento, & Bortolon, 2010;Lourente et al, 2011;Sabiha, Salim, Rahman, & Rola-Rubzen, 2016;Silva et al, 2017). The demand for appropriate techniques to measure the impact of human actions on soil quality is even more significant when the aim is to obtain a production system that is adapted to the characteristics of each soil class (Barreto, Miranda, Diniz Filho, Lira, & Medeiros, 2014;Shao et al, 2014;Kong, Miao, Wu, & Duan, 2016;Zhang et al, 2016).…”

Integrated management systems for the improvement of the physical-hydric quality of a cerrado oxisol

“…These results are similar to those obtained by Beutler et al (2002), reinforcing that integrated systems show a good capacity of MOS deposition, favoring soil structuring. Silva et al (2017), studying the effects of use and management systems on organic carbon and the physical and hydric attributes of a Yellow Oxisol, observed that the conversion of native Cerrado into no-tillage and pasture systems increased the soil organic carbon content over time.…”