Soil physical quality under long-term integrated agricultural production systems

Nascimento, Daniel Malheiro; Cavalieri-Polizeli, Karina Maria Vieira; Silva, Alcione Herminia da; Favaretto, Nerilde; Parron, L. M.

doi:10.1016/j.still.2018.08.016

Cited by 18 publications

(14 citation statements)

References 31 publications

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“…m -³). Nascimento et al (2019) found that in integration systems of crop-livestock-forest, especially the forestry component affects negatively the physical condition of the soil, in layers from 5 cm to 10 cm and 20 to 30 cm.…”

Section: Discussionmentioning

confidence: 98%

PHYSICAL QUALITY OF SOIL IN MECHANIZED THINNING OF Eucalyptus sp.

Vargas

Brandelero

Szymczak

et al. 2020

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The traffic of machines is the main cause of compaction of forest soils, causing soil deformations, due to the pressures exerted by the machines, both at the time of cutting and in the transshipment of wood. In this sense, this work had as objective to evaluate soil compaction, caused by the traffic of machines, in the mechanized thinning operation of Eucalyptus saligna Smith. This study was carried out in forest stands, in the municipality of Butiá, RS. Changes in soil physical properties were evaluated in three treatments: with no traffic; after cutting; and after wood transshipment. The forest inventory and collection of undisturbed soil samples were carried out to determine microporosity, macroporosity and bulk density. The experimental design was the completely randomized, in a bifactorial arrangement, with subdivided plots. For the comparison of the physical attributes, the Tukey test (p≤0.05) of significance was used. The results evidenced increase in soil density values, mainly in the treatment after transshipment and decrease in macropores, with values close to and below the limit considerable as detrimental to the development of the plants. The knowledge of soil deformations caused by forest operations contributes to the improvement of future processes aiming to guide the physical quality of the soil, in order to offer beneficial conditions to the growth of the plants.

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Section: Discussionmentioning

confidence: 98%

PHYSICAL QUALITY OF SOIL IN MECHANIZED THINNING OF Eucalyptus sp.

Vargas

Brandelero

Szymczak

et al. 2020

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“…Corn-cover crop succession (Carvalho et al, 2015;Wittwer et al, 2017) in the Cerrado ensures a protective soil cover in the second growing season (Pissinati et al, 2018) against erosion (Anache et al, 2018). Cover crops stabilize soil aggregates (Nascimento et al, 2019) and increase the humic acid and particulate C fractions (Santos et al, 2014), which are the main components of SOM and indicators of the soil quality (Nascimento et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Secondly, the micro and macroaggregates play an important role in the carbon reserve of the soil (Silva et al, 2016). The chemical fractions consist of labile fractions such as labile carbon, which is also sensitive to soil management, and of the more recalcitrant humic fractions, which are predominant in native Cerrado areas (Nascimento et al, 2017). The humic fractions in plant residues incorporated into the soil can undergo changes, while the fraction of insoluble humic is least affected by soil management (Hayes et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…The chemical and physical SOM fractions can be altered by the quality and quantity of plant residues (Soares et al, 2019) and management systems (Nascimento et al, 2017). The long-standing use of cover crops, as well as the choice of cover crop species with high biomass production, can contribute to raise the C and N stocks (Bayer et al, 2002;Soares et al, 2019), including the particulate carbon fraction (Santos et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Carbon fractions in soil under no-tillage corn and cover crops in the Brazilian Cerrado

Ramos

Silva

Carvalho

et al. 2020

Pesq. agropec. bras.

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The objective of this work was to evaluate soil carbon fractions under cover crops cultivated after corn (Zea mays), with or without nitrogen topdressing fertilization, in a long-term experiment in the Brazilian Cerrado. The experiment was carried out in a randomized complete block design, in split-plots with three replicates. The plots were represented by the cover crops, and the subplots, by the presence or absence of N topdressing for corn. The following cover crop species were planted after the harvest of the 30F53VYHR corn hybrid: 'BRS Mandarin' pigeonpea (Cajanus cajan), sunn hemp (Crotalaria juncea), oilseed radish (Raphanus sativus), and black mucuna (Mucuna aterrima). After the cutting of the cover crops, soil samples were collected at 0.0‒0.10 and 0.10‒0.20 m soil depths. After corn harvest, samples of its residues were taken. The cover crops alter the soil chemical and physical fractions, especially fulvic acid and soil particulate organic carbon. Nitrogen topdressing for corn decreases fulvic acid, but increases the humic acid/fulvic acid ratio and particulate organic carbon in the deeper soil layer.

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“…However, the reduced usage of agricultural implements in the pastures involves issues that can greatly impact the animal production, especially when combined with the increasing soil degradation, leading to losses that significantly reduce the productivity of such activity (Dias Filho, 2014), apart from compromising the environmental sustainability (Silva et al, 2017a;Nascimento et al, 2019). Estimations show that 50% of Brazilian pastures are degraded, these are 95 million hectares which are located mainly in the North, Northeast and Central-West part of the country (Dias Filho, 2014).…”

Section: Introductionmentioning

confidence: 99%

The Influence of Oxisol Physics Parameters on Dry Matter Production in Grasses of Brachiaria Genus

Silva

Oliveira

Pereira

et al. 2020

JAS

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The aim of this study was to assess the correlation between physical attributes of a Yellow Oxisol and the shoot dry matter production in grasses from the Brachiaria genus in the Brejo region, in Paraíba. The experiment has been conducted since 2005 in an experimental area of the Center of Agricultural Sciences of the Federal University of Paraíba, Areia-PB (6°58’12’’ S; 35°41’15’’ W and 573 m altitude). The experimental design adopted was that of randomized complete blocks (RCB) with 4 treatments and 4 replications. T1- Brachiaria decumbens Stapf.; T2- Brachiaria brizantha (Hochst) Stapf.; T3- Brachiaria humidicola (Rendle) Schwnickerdt Vr.; T4- Brachiaria brizantha MG5 cv. Vitória. The soil in the experimental area was characterized as Dystrophic Yellow Oxisol with clay-sandy texture. Soil samples with disturbed and undisturbed structure were collected within the 0.0-0.10 m layer. The shoot dry matter of grasses was collected in october of 2018. The analyzed variables were: bulk density (BD), compaction degree (CD), total porosity (TP), macroporosity (Ma), microporosity (Mi), field capacity (θFC), permanent wilting point (θPWP), available water content (θAWC), soil aeration capacity (SAC), mean weighted diameter of wet and dry aggregates (Wet and Dry MWD), aggregate stability index (ASI) and saturated hydraulic conductivity (Kθ). The Student’s t-test and Pearson's correlation analysis (p <0.05) were performed. It was concluded that dry matter production was positively influenced by θFC and θPWP. And the increase of the average values of BD, CD, Wet and Dry MWD favored the increase of shoot dry matter production by grasses.

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Soil physical quality under long-term integrated agricultural production systems

Cited by 18 publications

References 31 publications

PHYSICAL QUALITY OF SOIL IN MECHANIZED THINNING OF Eucalyptus sp.

PHYSICAL QUALITY OF SOIL IN MECHANIZED THINNING OF Eucalyptus sp.

Carbon fractions in soil under no-tillage corn and cover crops in the Brazilian Cerrado

The Influence of Oxisol Physics Parameters on Dry Matter Production in Grasses of Brachiaria Genus

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