Stability of Aggregates and the Processes that Help in Their Formation and Stabilization

Schiller, Andréia da Paz; Eckhardt, Daniele Cristina Schons; Seidel, Edleusa Pereira; Lana, Maria do Carmo; Gonçalves, Affonso Celso; Sampaio, Marinez Carpiski; Rego, Carlos Augusto Rocha de Moraes

doi:10.9734/ijpss/2018/41056

Cited by 6 publications

(2 citation statements)

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“…According to Kluthcouski et al (2004) and Seidel (2016), in the southern region of Brazil, the straw production contributed to the soil for good maintenance of the no-till farming system should be between 7 and 8 t ha -1 in each crop. Therefore, over time, this cropping system 1: monocrop/corn monocrop/fallow, may lead to a reduction in soil organic carbon, leading to degradation of the production system (Schiller et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

Corn yield for ensilage in consortium with green manure and bean in succession

Martinez

Seidel²,

Pan³

et al. 2022

RSD

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This paper aimed to evaluate the productivity of corn crop for silage, beans and straw production in different crop rotation systems with spring/summer and fall/winter green manures cultivated under agroecological production management. The experiment was implemented in a rural property managed in an agroecological system since 2009, in the 2017/18 and 2018 crops. The experimental design used was in randomized blocks, with five repetitions. The treatments consisted of four different crop rotation systems: monocrop corn/monocrop corn/fallow/beans; corn + cowpea/monocrop corn/oats/beans; corn + crotalaria/monocrop corn/forage radish/beans and corn + jack bean/monocrop corn/vetch/beans. After the 2018 second crop of corn was removed, the winter/spring green manures were sown: forage radish, vetch, and oats. This was followed in September by the bean crop. The dry matter yields of corn for silage in each growing season and of the bean were evaluated, as well as the total productivity of the systems. The straw yield was also evaluated. The crop rotation systems that included green manures presented the highest total productivity. The intercropping with pork bean favored the corn productivity in the harvest and the crotalaria stover favored the productivity in the off-season. The corn + cowpea/jack bean/beans monocrop and corn + crotalaria/jack bean/forage radish/beans systems favored the productivity of beans. The mode corn monocrop/corn monocrop/fallow did not prioritize the accumulation of straw on the soil.

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Section: Resultsmentioning

confidence: 99%

Corn yield for ensilage in consortium with green manure and bean in succession

Martinez

Seidel²,

Pan³

et al. 2022

RSD

View full text Add to dashboard Cite

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“…Such results may be due to the greater contribution and accumulation of litter or organic residues on the soil surface and the organic material added inside the profile via root system renewal, associated with the absence or minimal anthropic disturbance, thus favoring the maintenance of organic matter in the system. SOM has a direct influence on the aggregates formation and stabilization due to its diversified molecular structure and the decomposition rates of its different fractions in the soil (SCHILLER et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

Soil quality indicators in areas with different vegetation cover in the Atlantic Forest biome, Southeastern Brazil

Coutinho

Pinto

Pereira

et al. 2020

RICA

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The southeast region of Brazil, in the Atlantic Forest biome, has been impacted for a long time, observing today small agricultural areas inserted in a matrix of pastures and forest fragments, the soils being highly modified due to the different forms of use they were submitted. The objective of this study was to evaluate the organic carbon content in the humic fractions on soil organic matter (SOM), the distribution of aggregates in size classes and the porosity and aggregates density variables by means of computed tomography in secondary forest, pasture and agriculture areas in Pinheiral (RJ). Three areas composed of secondary forests with different succession stages and three managed areas were evaluated: Secondary Forest (SF) Initial Stage (SFIS), Medium Stage (SFMS), Advanced Stage (SFAS), mixed managed pasture (MMP), and perennial and annual agriculture (PA and AA, respectively). Three types of samples were collected in different layers: i) deformed samples to quantify carbon in the SOM humic fractions; ii) clods for quantifying the mass of aggregates and later assessing the distribution by diameter classes; and iii) undisturbed samples collected with the aid of an acrylic cylinder to perform computed tomography (CT). Humic substances and aggregate classes below 2.0 mm were the attributes most influenced by the forms of use and/or vegetation cover. The CT technique proved to be efficient in the measurement of the edaphic attribute’s porosity and density of the aggregates, helping in the characterization and separation of the different environments.

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