Soil physical and biological properties in an integrated crop-livestock system in the Brazilian Cerrado

Bonetti, João de Andrade; Paulino, Helder Barbosa; Souza, Edicarlos Damacena de; Caetano, J. O.

doi:10.1590/s0100-204x2018001100006

Cited by 22 publications

(21 citation statements)

References 17 publications

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“…Attributes such as microbial biomass carbon, soil basal respiration, metabolic quotient (qCO 2 ), microbial quotient (qMic) and carbon use efficiency have not been influenced by the functional diversity caused by the systems in the short term ( Table 2). The lack of a short-term response given by these attributes has also been observed by Bonetti et al (2018), who only obtained significant results two years after deploying an ICLS. The Figure 2.…”

Section: Resultssupporting

confidence: 56%

“…MBC SBR qCO 2 qMic CUE GMea μg g -1 mg g -1 h -1 mg C-CO 2 μg -1 MBC % μg product g -1 h -1 μg product g -1 h -1 Very low diversity 271. Plant diversity in integrated crop-livestock systems increases the soil enzymatic activity in the short term have shown significant results, similarly to what was observed by Bonetti et al (2018). Furthermore, it is known that the areas with moderate grazing intensity present a higher soil carbon sequestration potential.…”

Section: Treatmentssupporting

confidence: 71%

“…Considering the microbial biomass carbon values before the deployment of the experiment as referential data [mean of 311.32 μg C g -1 of soil, a value regarded as moderate via soil bioanalysis by Mendes et al (2018)], it can be observed that the system with the highest functional diversity presented values superior to 7 %. Studies conducted by Bonetti et al (2018) in the Brazilian Savanna, via ICLS, demonstrated that it was possible to obtain an increase of 23 % for the microbial biomass carbon, in relation to the area with no grazing, during the first year, with significant effects only after two management years.…”

Section: Resultsmentioning

confidence: 99%

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Plant diversity in integrated crop-livestock systems increases the soil enzymatic activity in the short term

Franco

Silva

Souza

et al. 2020

Pesqui. Agropecu. Trop.

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Integrated crop-livestock systems (ICLS) intercropped in the pasture phase promote alterations in the dynamics of soil attributes, among them the enzymatic activity. This study aimed to evaluate soil enzymatic and microbial activities, following the implementation of ICLS with increased plant diversity during the pasture phase. The study consisted of soybean cultivation at season and pasture with different diversity levels in the off-season: very low - monocropped Urochloa brizantha cv. BRS Paiaguás with no animal entry; low - monocropped Paiaguás; medium - Paiaguás and cowpea bean (Vigna unguiculata); high - Paiaguás, cowpea bean and niger (Guizotia abyssinica); very high - Paiaguás, cowpea bean, niger, buckwheat (Fogopyrum esculentum) and forage turnip (Raphanus sativus). The introduction of plants from different families, associated to grazing, positively affected the enzymatic activities of acid phosphatase, β-glucosidase and urease. In relation to microbial biomass carbon and basal respiration, there were no effects from the treatments. Therefore, among the evaluated biochemical soil attributes, the activities of some soil enzymes were more sensitive in demonstrating, in the short term, the positive effects of the increased plant variety in the ICLS pasture phase.

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Section: Resultssupporting

confidence: 56%

Section: Treatmentssupporting

confidence: 71%

Section: Resultsmentioning

confidence: 99%

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Plant diversity in integrated crop-livestock systems increases the soil enzymatic activity in the short term

Franco

Silva

Souza

et al. 2020

Pesqui. Agropecu. Trop.

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“…Bonetti et al. (2018) also observed an increase in macroporosity under ICLS compared with the ungrazed areas, which resulted from the greater root development under ICLS. Our study showed that properly managed grazing of CCs and crop residue under long‐term ICLS enhanced the CT‐measured soil porosity.…”

Section: Resultsmentioning

confidence: 93%

Grassland conversion to croplands impacted soil pore parameters measured via X‐ray computed tomography

Singh

Kumar

Udawatta

et al. 2021

Soil Science Soc of Amer J

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Soil porosity estimated conventionally cannot provide the spatial distribution and geometrical properties of pore networks. This on-farm study assessed the impacts of grassland-cropland conversion on soil pore characteristics. This study aimed to quantify the microscale changes in pores near the soil surface (0-10 cm) under grasslands converted to croplands managed with a rotation of corn (Zea mays L.)-soybean [Glycine max (L.) Merr.] (CS); an integrated crop-livestock system (ICLS) of cornsoybean-oats (Avena sativa L.)-cover crops (CCs), with livestock grazing on corn and soybean residue after harvest and on CCs; and the native grassland (NG). Intact soil cores (diameter: 76.2 mm; length: 76.2 mm) were collected in three replications from CS, ICLS, and NG areas located adjacent to each other. Soil cores were scanned via X-ray computed tomography (CT) (pixel resolution: 0.226 by 0.226 mm; slice thickness: 0.5 mm). Soils under CS converted from NG significantly decreased CTmeasured macroporosity eightfold. However, it increased sevenfold when CS was converted to ICLS. Higher connected porosity, connection probability, and macroporosity under ICLS and NG enhanced the saturated hydraulic conductivity (K sat) compared with CS. The soil organic carbon (SOC) stock was increased by 13% at 0-to 10-cm depth, when soils under CS were converted to improved management (ICLS). Significant correlations of CT-measured pore parameters were found with K sat. We conclude that CS converted from grasslands degraded SOC, pores, and other hydro-physical properties, which can be enhanced by integrating CCs and grazing on CCs and crop residues.

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“…In Cerrado, these effects have been studied in the last decade [18][19][20], and received a greater focus due to the advancement of the agricultural frontier from Southern Amazonia to MATOPIBA [5,20]. Soil compaction [21,22], erosion [23], and decreased permeability and water infiltration rates [22,24] are some effects of land use change that affects the physical and hydraulic soil properties causing damage on soil aeration, and soil water dynamics in Cerrado. However, most of these studies are based on few data and do not allow spatial generalizations.…”

Section: Introductionmentioning

confidence: 99%

Influence of Land Use and Land Cover on Hydraulic and Physical Soil Properties at the Cerrado Agricultural Frontier

Dionizio

Costa

2019

Agriculture

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Western Bahia is one of the most active agricultural frontiers in the world, which raises concern about its natural resources conservation, especially regarding water availability. This study evaluated the influence of five different land uses and land covers on physical and hydraulic soil properties, and developed pedotransfer functions to derive regional hydraulic properties. Significant changes between physical and hydraulic soil properties under agricultural areas and under natural vegetation cover were found, reinforcing that agricultural activity may influence the soil water balance. Cerrado and Forest formation areas have higher infiltration rates ( K s a t ) compared to managed areas, with average values of 16.29 cm h−1, and 14.47 cm h−1, while irrigated croplands, rainfed croplands and pasture areas have much smaller infiltration rates, with K s a t equal to 3.01 cm h−1, 6.22 cm h−1 and 5.01 cm h−1, respectively. Our results suggest that the agriculture practices do not directly affect the vertical nature of hydrological flowpath, except in the case of intensive irrigated agriculture areas, where K s a t reduction can lead to erosive processes favoring organic matter losses, and decreases in productivity and soil quality. Impacts of land use change on hydraulic and physical soil properties are a reality in the Cerrado agriculture frontier and there is an urgent need to monitor how these changes occur over time to develop effective mitigation strategies of soil and water conservation.

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Soil physical and biological properties in an integrated crop-livestock system in the Brazilian Cerrado

Cited by 22 publications

References 17 publications

Plant diversity in integrated crop-livestock systems increases the soil enzymatic activity in the short term

Plant diversity in integrated crop-livestock systems increases the soil enzymatic activity in the short term

Grassland conversion to croplands impacted soil pore parameters measured via X‐ray computed tomography

Influence of Land Use and Land Cover on Hydraulic and Physical Soil Properties at the Cerrado Agricultural Frontier

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