Soil aggregate and its response to land management practices

Wei, Chaofu; Gao, Ming; Shao, Junfeng; Xie, Deti; Pan, Genxing

doi:10.1016/s1672-2515(07)60263-2

Cited by 34 publications

(20 citation statements)

References 98 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Correspondingly, the incorporation of straw could lead to soil particles to stick together, which in turn, form soil aggregates. Similar results have been reported [14,[53][54][55].…”

Section: Influence Of Fertilizer On Soil Propertiessupporting

confidence: 91%

Aggregate Stability under Long-Term Fertilization Practices: The Case of Eroded Ultisols of South-Central China

Guo¹,

Zhang

Yang³

et al. 2019

Sustainability

View full text Add to dashboard Cite

Soil aggregate stability is an important aspect of soil function and health. Fertilization could potentially alter soil properties and thereby affect aggregate stability. To determine which fertilizer is useful for improving soil fertility and stabilizing soil aggregates and thereby reducing soil erodibility, we examined three types of fertilizer, and measured how soil organic carbon, carbohydrates, and related soil properties influenced aggregate stability in eroded Ultisols. Treatments included control (CK), mineral fertilizer nitrogen (N), phosphorus (P), potassium (K) (NPK), fertilizer NPK plus straw (NPKS), and farmyard manure (FYM). Aggregate stability was tested according to Le Bissonnais method, involving three disruptive tests: fast wetting (FW), slow wetting (SW), and mechanical breakdown (WS). Total organic carbon, particulate organic carbon, mineral-associated carbon, and cold-water-soluble carbohydrate, hot-water-soluble carbohydrate, and dilute acid hydrolysable carbohydrate were measured, as well as soil intrinsic properties (including pH, bulk density, iron and aluminum oxides). The 12-year fertilization had a larger effect on aggregate stability and related soil properties in a 0–15 cm soil layer, whereas no effect was evident at a soil depth of 15–40 cm. MWD (mean weight diameter) under the three tests decreased with increasing soil depth. Fertilization, especially farmyard manure evidently improved MWDFW and MWDWS at a depth of 0–15 cm. Slaking was the main mechanism of aggregate breakdown in Ultisols studied, followed by mechanical breakdown. Correlation analysis showed that MWDFW and MWDWS at a depth of 0–15 cm increased with the increase of particulate organic carbon, total organic carbon, hot-water-soluble carbohydrate and pH. Furthermore, their interaction with amorphous iron oxides enhanced aggregate stability against slaking or, with amorphous aluminum oxides, modified aggregate stability against mechanical breakdown. Consequently, particulate organic carbon was the dominant cementing agent for aggregation in Ultisols studied, and its combination with pH, amorphous aluminum oxides, amorphous iron oxides, and free aluminum oxides play a synergetic role in stabilizing soil aggregate. Accordingly, farmyard manure or fertilizer NPK plus straw improved soil fertility and the ability to resist slaking.

show abstract

“…Correspondingly, the incorporation of straw could lead to soil particles to stick together, which in turn, form soil aggregates. Similar results have been reported [14,[53][54][55].…”

Section: Influence Of Fertilizer On Soil Propertiessupporting

confidence: 91%

Aggregate Stability under Long-Term Fertilization Practices: The Case of Eroded Ultisols of South-Central China

Guo¹,

Zhang

Yang³

et al. 2019

Sustainability

View full text Add to dashboard Cite

show abstract

“…Barzegar et al (2002) and Wei et al (2006) reported that higher rates of organic material addition resulted in lower bulk densities. In our study, the soil bulk density decreased after the application of crop straw compared with the control treatment (NA), which indicated that the incorporation of crop straw effectively improved the bulk density and structure of the soil (Mulumba and Lal, 2008).…”

Section: Discussionmentioning

confidence: 99%

Effects of straw incorporation on the stratification of the soil organic C, total N and C:N ratio in a semiarid region of China

Zhang

Wei

et al. 2015

Soil and Tillage Research

126

View full text Add to dashboard Cite

“…The increased soil aggregation observed under NT treatments compared to the CT treatment in the studied area could be explained by two factors. First, CT mechanically disrupts soil aggregates, breaking up the largest aggregates into smaller units (Bronick and Lal, 2005;Martinez et al, 2008;Wei et al, 2006). CT also disturbs plant and animal communities and decreases the faunal activity that contributes to aggregation (Plante and McGill, 2002); these factors combine to reduce structural stability compared to NT.…”

Section: Tablementioning

confidence: 99%

On-farm assessment of tillage impact on the vertical distribution of soil organic carbon and structural soil properties in a semiarid region in Tunisia

Jemai

Aïssa

Guirat

et al. 2012

Journal of Environmental Management

View full text Add to dashboard Cite

Soil aggregate and its response to land management practices

Cited by 34 publications

References 98 publications

Aggregate Stability under Long-Term Fertilization Practices: The Case of Eroded Ultisols of South-Central China

Aggregate Stability under Long-Term Fertilization Practices: The Case of Eroded Ultisols of South-Central China

Effects of straw incorporation on the stratification of the soil organic C, total N and C:N ratio in a semiarid region of China

On-farm assessment of tillage impact on the vertical distribution of soil organic carbon and structural soil properties in a semiarid region in Tunisia

Contact Info

Product

Resources

About