Changes in soil organic matter associated with pig rearing: Influence of stocking densities and land gradient on forest soils in central Italy

Bondi, Giulia; Peruzzi, Eleonora; Macci, Cristina; Masciandaro, Grazia; Pistoia, Alessandro

doi:10.1016/j.agee.2015.05.003

Cited by 12 publications

(12 citation statements)

References 50 publications

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“…Moreover, the differences in the vermicomposts were more clearly reflected in the pyrolytic indices of organic matter mineralization and humification ( Table 3). The mineralization index (N/O) expresses the ratio of furfural to pyrrole [19] and is considered to be an index of humus stability, which is lower for more stabilized humus since pyrrole (O) is chemically and microbiologically more stable than furfural (N) [56]. Thus, the vermicompost from SV had a more mineralized and stable organic matter than the vermicomposts from G or LG.…”

Section: Chemico-structural Properties Of Organic Matter In Mature Vementioning

confidence: 99%

Eco-friendly vermitechnological winery waste management: a pilot-scale study

et al. 2020

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Enormous quantities of winery wastes are generated in grape-growing regions around the world. The aim of this study was to gather key pilot-scale data on the use of different winery wastes in a vermitechnological system to produce commercially viable soil organic amendments. Exhausted grape marc (G), lees cake mixed with exhausted grape marc (LG), and biosolid vinasse mixed with vine shoots (SV) were tested as substrates for vermicomposting. Changes in earthworm development, enzyme activities, chemical properties, organic matter fractions, and phytotoxicity were assessed along 6 months of vermicomposting and after a subsequent maturation period of 2 months. The organic matter composition of the three produced vermicomposts was also characterized using pyrolysis-gas chromatography (Py-GC). During vermicomposting, earthworm number increased significantly in both LG and SV, with earthworm biomass peaking after 2 months. By contrast, G failed to provide adequate nourishment for earthworms. Dehydrogenase and hydrolytic enzyme activities peaked after 2 months and then declined as available organic compounds diminished. Overall, hydrolytic enzyme activities tended to stabilize during maturation. After vermicomposting and maturation, total organic carbon, soluble carbon, phytotoxicity, electrical conductivity, C/N ratios, and polyphenol content decreased, whereas pH, phosphorus, micronutrients, and humification ratios increased. Using Py-GC, the vermicompost from SV was found to contain the most evolved organic matter in view of its higher degree of humification and lower mineralization index. Nevertheless, all the different winery wastes could be biotransformed, by using vermitechnology, into high value-added soil organic amendments with a degree of stability and maturity adequate to be marketed.

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Section: Chemico-structural Properties Of Organic Matter In Mature Vementioning

confidence: 99%

Eco-friendly vermitechnological winery waste management: a pilot-scale study

et al. 2020

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“…However, only 5 percent of pigs are raised in free range systems in Australia (APL 2018a) due to significant economic, environmental, and climate constraints. Pigs are sensitive to heat (CIWF 2006) and cause damage to vegetation and soils through foraging and rooting behavior (Edge, Bulman, and Edwards 2005; Bondi et al 2015), and excess nutrients from manure can leach into land and water systems (Siegford, Powers, and Grimes‐Casey 2008). However, there is ongoing social movement activism in Australia for further improvements to pig welfare beyond “sow stall free.” These “response movements” (King and Busa 2017) are a source of contestation, and they open up the possibility for further improvements to animal welfare.…”

Section: Resultsmentioning

confidence: 99%

How Free Is Sow Stall Free? Incremental Regulatory Reform and Industry Co‐optation of Activism

Carey¹,

Parker²,

Scrinis³

2020

Law & Policy

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This article critically examines how interactions between social movement activism, supermarkets, and the pork industry led to the voluntary adoption of “sow stall free” standards in Australia. We “backwards map” the regulatory space behind “sow stall free” products to show how the movement against factory farming became selectively focused on the abolition of one form of confinement for sows rather than on other forms of confinement and the conditions of the sows’ offspring, the piglets that are consumed. We argue that this facilitated an incremental shift to “sow stall free” production, allowing the concept of pig welfare to be corporatized in a way that maintains the dominant model of factory farmed pig meat production.

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“…A major change has been a continued interest among pig farmers for a large scale, intensive outdoor production which is driven by increased economic and market forces [5]. These forces fueled by demands for animal welfare, minimal capital input needed to sustain the industries, and consumers preference for a more natural and organic pork have compounded these increase as compared to indoor production [6,7]. In the United Kingdom, for example, the proportion of sows in pigs breeding herds increased from 69% in 2012 to 71% in 2015, and that of dry sows increased from 14% to 16% [8].…”

Section: Introductionmentioning

confidence: 99%

“…as nitrate losses via leaching, runoff and gaseous emissions) threatening ecosystems is also growing [11]. The intensity in outdoor pig production, coupled with insufficient management practice transpired into these environmental problems [7]. The present day practice in terms of dietary provision and stocking density can cause high levels of nutrients to build on free draining soil, especially when vegetation is removed from paddocks by sows foraging activity [7].…”

Section: Introductionmentioning

confidence: 99%

“…The intensity in outdoor pig production, coupled with insufficient management practice transpired into these environmental problems [7]. The present day practice in terms of dietary provision and stocking density can cause high levels of nutrients to build on free draining soil, especially when vegetation is removed from paddocks by sows foraging activity [7]. Foraging behaviour of pigs, especially Abstract A significant change in land use has been a continued increase in large, intensive outdoor pig production which is largely fueled by increased economic and market forces.…”

Section: Introductionmentioning

confidence: 99%

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