Tillage effects on soil microbial biomass, SOM mineralization and enzyme activity in a semi-arid Calcixerepts

Kabiri, Vida; Raiesi, Fayez; Ghazavi, Mohammad Ali

doi:10.1016/j.agee.2016.07.022

Cited by 149 publications

(90 citation statements)

References 58 publications

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“…In three years, SOC stocks increased in 3.18 and 1.62 Mg ha -1 for CS and CB, respectively, regarding T. These increases correspond to 1.06 and 0.54 Mg SOC ha -1 year -1 for CS and CB, which are in the same range than those recorded by Peregrina et al (2010;. The fact that positive carbon sequestration rates were recorded even with very low vegetation cover and root biomass inputs strengthen the notion that tillage is one of the major driving forces of SOC mineralization (Kabiri et al, 2016) and that tillage cessation could be as decisive as plant cover development to increase SOC and reduce soil degradation.…”

Section: Gc Influence On Soil Parameterssupporting

confidence: 61%

“…At the same time its quality and fertility are improved (Gregorich et al, 1997) that we have proved in the case of the root biomass. Moreover, it is difficult to compare the SOC sequestration rates because sometimes the soil management strategy is called cover crops or groundcovers but these strategies include an annual tillage for seeding operations or to limit water competition obviating that tillage is one of the major driving forces of carbon mineralization (Kabiri et al, 2016). Additionally, there is not a standard of soil sampling depth to calculate SOC stocks or sequestration rates.…”

Section: Discussionmentioning

confidence: 99%

“…This was caused by the tillage operations from April that mineralizes SOC (Kabiri et al, 2016) and because the GC species was leguminous, which has a low C/N relationship and increases mineralization rates (Plaza-Bonilla et al, 2015).…”

Section: Temporary Gc and Soc Thresholdmentioning

confidence: 99%

“…Agriculture causes several environmental impacts and particularly soil degradation processes (Bruun et al, 2015;Colazo and Buschiazzo, 2015). The severity and intensity of soil degradation is determined by the methods and techniques of managing soil systems (Lorenz and Lal, 2016;Kabiri et al, 2016;Zhang and Ni, 2017). In the context of agricultural land uses, Mediterranean vineyards undergo a sort of soil degradation processes: soil erosion, organic matter loss; nutrient loss and, thus, a decreasing fertility.…”

Section: Introductionmentioning

confidence: 99%

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Groundcover influence on physical and chemical soil properties, runoff and nutrient loss and grape yield and quality in semiarid Mediterranean vineyards

Díaz¹

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Section: Gc Influence On Soil Parameterssupporting

confidence: 61%

Section: Discussionmentioning

confidence: 99%

Section: Temporary Gc and Soc Thresholdmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Groundcover influence on physical and chemical soil properties, runoff and nutrient loss and grape yield and quality in semiarid Mediterranean vineyards

Díaz¹

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“…MBC was found to be 1.2% of SOC in paddy rice in China [19]. Crops under moldboard, disk, rotary, and chisel tillage regimens in Iran had 1.0-2.4% of SOC in MBC [20], whereas the percentage of SOC in MBC was similar under barley after six years of either conventional-tillage and zero-till treatments in Alberta [21]. Greater MBC is expected in grasslands, because croplands are reported to have reduced soil quality and less microbial activity associated with soil disturbance and incomplete vegetation cover in time and space [22].…”

Section: Introductionmentioning

confidence: 99%

Grasslands and Croplands Have Different Microbial Biomass Carbon Levels per Unit of Soil Organic Carbon

McGonigle

Turner

2017

Agriculture

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Primarily using cropped systems, previous studies have reported a positive linear relationship between microbial biomass carbon (MBC) and soil organic carbon (SOC). We conducted a meta-analysis to explore this relationship separately for grasslands and croplands using available literature. Studies were limited to those using fumigation-extraction for MBC for field samples. Trials were noted separately where records were distinct in space or time. Grasslands were naturally occurring, restored, or seeded. Cropping systems were typical of the temperate zone. MBC had a positive linear response to increasing SOC that was significant in both grasslands (p < 0.001; r 2 = 0.76) and croplands (p < 0.001; r 2 = 0.48). However, MBC increased 2.5-fold more steeply per unit of increasing SOC for grassland soils, as compared to the corresponding response in cropland soils. Expressing MBC as a proportion of SOC across the regression overall, slopes corresponded to 2.7% for grasslands and 1.1% for croplands. The slope of the linear relationship for grasslands was significantly (p = 0.0013) steeper than for croplands. The difference between the two systems is possibly caused by a greater proportion of SOC in grasslands being active rather than passive, relative to that in croplands, with that active fraction promoting the formation of MBC.

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Effect of straw returning on soil organic carbon in rice–wheat rotation system: A review

Jin

Shah

Zhang

et al. 2020

Food and Energy Security

203

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The rice–wheat rotation model of crop planting is widely used globally, and worldwide, straw returning is the main method of crop straw treatment. However, the straw return method commonly used in the modern rice–wheat rotation system has many adverse effects on the levels and improvement of soil fertility and crop yield, and there is no systematic theory of rice and wheat straw returning to use as a guide. In this paper, we concluded that: in the rice–wheat rotation system, returning 1,500–4,500 kg/ha of rice straw and 2,250–6,750 kg/ha of wheat straw to the field helps increase the organic carbon content and quality of the soil and promotes high annual yields; conventional mixing of straw into the field can increase the organic carbon content of the soil in a short time; long‐term use of concentrated ditch‐buried straw return has obvious advantages over other straw returning methods in increasing the accumulation of soil organic carbon; the combination of little or no tillage plus straw returning helps increase the content and quality of organic carbon in soil; and when the soil water content is 15%–22.5%, it is the most conducive to the accumulation of soil organic carbon. In addition, we also provide relevant suggestions for future research directions on straw returning via systematic analyses and thought processes.

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Tillage effects on soil microbial biomass, SOM mineralization and enzyme activity in a semi-arid Calcixerepts

Cited by 149 publications

References 58 publications

Groundcover influence on physical and chemical soil properties, runoff and nutrient loss and grape yield and quality in semiarid Mediterranean vineyards

Groundcover influence on physical and chemical soil properties, runoff and nutrient loss and grape yield and quality in semiarid Mediterranean vineyards

Grasslands and Croplands Have Different Microbial Biomass Carbon Levels per Unit of Soil Organic Carbon

Effect of straw returning on soil organic carbon in rice–wheat rotation system: A review

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