Larger soil aggregate stability under paddy cultivation. The main factors involved in soil aggregate formation include soil parent material, organic matter, and type of land management used (e.g., tillage, cropping, and fertilization) (Jiao et …
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The effects of cultivation and overgrazing on soil quality in arid regions have been rarely addressed. This study investigated the roles of cropping and grazing in soil organic C pools and aggregate stability at 0–20 cm depth by comparing conventional grazing (non-fenced ever), intensive grazing (fenced for 22 years) and cropping …
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Background and aims Conservation tillage enhances soil aggregate function, —a key factor for promoting soil nutrient cycling and plant growth. However, there is a limited understanding of how tillage practices impact soil nutrients, enzymes and microbes distribution among different-sized aggregates, and their potential subsequent effects on …
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Sustainable agricultural use of cultivated desert soils has become a concern in Hexi Corridor in Gansu Province of China, because loss of topsoil in dust storms has been recently intensified. We chose four desert sites to investigate the effects of cultivation (cropping) on (i) soil organic C and its size fractions and (ii) soil aggregate stability (as a …
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Soil aggregate stability is an important measure for the evaluation of soil structural quality. Several methodologies have been developed to assess aggregate stability in a destructive manner which has proved very useful and accurate. ... Saggar, S., Yeates, G. W., and Shepherd, T. G., 2001. Cultivation effects on soil biological …
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What are recycled aggregates? In our growing need for sustainable construction, the demand for a circular economy rather than extracting material, is increasing. The use of recycled aggregates provides …
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where PAD is the percentage of aggregates destruction (%), M d and M w represent the aggregate mass fractions of dry sieve and wet sieve with >0.25 mm …
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In the current study, considerably higher CO 2 –C production was observed under manure treated plots, which might be due to the promoting effect of manure on …
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However, these cation concentrations were significantly decreased in the 2–4.76 mm aggregate fractions during cultivation process, and were remarkably …
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DOI: 10.1007/s42729-024-01682-4 Corpus ID: 268314465; Dynamic of Organic Matter, Nutrient Cycling, and PH in Soil Aggregate Particle Sizes Under Long-Term Cultivation of Camellia Oleifera
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Long-term crop cultivation and fertilizer management practices are rapidly emerging techniques in the Loess Plateau, northern China. However, little is known regarding their impacts on the soil aggregate stability and how they affect soil mechanical composition and fertility. In this study, soil samples were collected from three soil depths …
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Effects of Soil Aggregation and Tillage Practices on Soil Quality, Structure and Nutrient Cycling. Soil structure and aggregation are important to plant growth and …
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Cultivation reduces soil C content and changes the distribution and stability of soil aggregates. We investigated the effect of cultivation intensity on aggregate distribution and aggregate C in …
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Maintaining the soil quality in the arid dry system is vital for the restoring of the fertility of deserted rangeland soil in dry environments. There is a dire need to understand how the cultivation system modifications may change soil organic carbon (SOC) fractions, soil aggregation, and soil macro- and micronutrient contents in the arid …
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Fertilization affects the formation and stability of soil aggregate, as well as the nutrient status of soil aggregate. However, the potential effect of compost on soil aggregate and its nutrient characteristics is still unclear. In view of this, we conducted a greenhouse vegetable cultivation experiment to evaluate soil water-stable aggregate …
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Initial cultivation of a temperate‐region soil immediately accelerates aggregate turnover and CO2 and N2O fluxes August 2006 Global Change Biology 12(8):1507 - 1520
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In view of this, we conducted a greenhouse vegetable cultivation experiment to evaluate soil water-stable aggregate (WSA) and its stability indices and aggregate nutrient stoichiometry ...
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Extensive expansion of mesenchymal stem cells (MSCs) for cell-based therapies remains challenging since long-term cultivation and excessive passaging in two-dimensional conditions result in a loss of essential stem cell properties. Indeed, low survival rate of cells, alteration of surface marker pro …
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Only few studies reported to date, however, have utilized dynamic conditions for three-dimensional aggregate cultivation of MSCs. Still, the integration of dynamic bioreactor systems, such as spinner flasks or stirred tank reactors might pave the way for a robust, scalable bulk expansion of MSC aggregates or MSC-derived extracellular …
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Especially, aggregate cultivation under hypoxic conditions might be of benefit in this context since the hypoxic environment in the core of aggregates was reported to increase expression of trophic factors such as VEGF, FGF-2, HGF, and CXCR4 [16,41] as well as ECM proteins such as fibronectin, collagen I, vitronectin, and collagen IV [42]. ...
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Aggregates are raw materials that are produced from natural sources and extracted from pits and quarries, including gravel, crushed stone, and sand. When used with a binding medium, like water, cement, and asphalt, they are used to form compound materials, such as asphalt concrete …
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Compost can improve the physical and chemical properties of soil cultivation by increasing porosity, aggregate stability, organic content, water-holding capacity, and the macro and micronutrients available for plant uptake as well as reducing bulk density. This creates a favorable environment for microorganism development that leads to improved ...
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Cultivation theory examines the long-term effects of television viewing on viewers' conceptions of social reality. Cultivation analysis initiated as part of the Cultural Indicators Project founded by George Gerbner in the late 1960s. ... Cultivation analysis approaches television as a message system with aggregate and repetitive patterns of ...
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discussion, page 3), one of the aims of cultivation is to develop good soil structure, with stable soil aggregates. Primary cultivation (rough digging or plowing) can aid in beginning the process of cementing soil separates together into aggregates. Limited and timely primary cultivation promotes aggregate formation.
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At 18 years of cultivation, aggregate stability recuperated (Fig. 5), reflecting the recovery of organic matter content promoted by long-term sugarcane cropping with organic matter input. Silva and Mielniczuk (1997) emphasized that the roots of sugarcane provide great structuring power to improve aggregate stability.
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Agricultural sustainability relates directly to maintaining or enhancing soil quality. Soil quality studies in Canada during the 1980's showed that loss of soil organic matter (SOM) and soil aggregate stability was standard features of non-sustainable land management in agroecosystems. In this study total soil organic carbon (SOC), particulate organic matter …
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The soil aggregate size fraction and its stability exhibited an exponential growth trend with increasing cultivation ages, but no significant change was found for the proportion of soil ...
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The long-term use of fertilizers and pesticides in conventional cultivation has resulted in a decrease in soil productivity and vegetable yields in greenhouses. However, there is little research exploring the changes in soil organic carbon and the microbial community mediated by soil aggregates, or their impacts on soil productivity. This study …
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Semantic Scholar extracted view of "Aggregate pore structure, stability characteristics, and biochemical properties induced by different cultivation durations in the Mollisol region of Northeast China" by Jue Peng et al.
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Initial cultivation of a temperate-region soil immediately accelerates aggregate turnover and CO 2 and N 2 O fluxes. A. STUART GRANDY, ... substantially reduced soil aggregate size (mean weight diameter decreased 35% within 60 days), and a reduction in the proportion of intraaggregate, ...
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