Impact of compost, vermicompost and biochar on soil fertility, maize yield and soil erosion in Northern Vietnam: A three year mesocosm experiment

Doan, Thuy Thu; Henry-des-Tureaux, Thierry; Rumpel, Cornélia; Janeau, Jean‐Louis; Jouquet, Pascal

doi:10.1016/j.scitotenv.2015.02.005

Cited by 279 publications

(147 citation statements)

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“…For instance, the increase of θ i by fine and medium biochar shows that biochar intrapores are likely to hold more water near the surface during a rain event, which may help reduce runoff. Doan et al [37] reported that presence of biochar significantly reduced water runoff for three years of application in mesocosms. Depending on the scale of application, reduction of runoff could change local rivers’ hydrographs.…”

Section: Discussionmentioning

confidence: 99%

Biochar particle size, shape, and porosity act together to influence soil water properties

et al. 2017

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Many studies report that, under some circumstances, amending soil with biochar can improve field capacity and plant-available water. However, little is known about the mechanisms that control these improvements, making it challenging to predict when biochar will improve soil water properties. To develop a conceptual model explaining biochar’s effects on soil hydrologic processes, we conducted a series of well constrained laboratory experiments using a sand matrix to test the effects of biochar particle size and porosity on soil water retention curves. We showed that biochar particle size affects soil water storage through changing pore space between particles (interpores) and by adding pores that are part of the biochar (intrapores). We used these experimental results to better understand how biochar intrapores and biochar particle shape control the observed changes in water retention when capillary pressure is the main component of soil water potential. We propose that biochar’s intrapores increase water content of biochar-sand mixtures when soils are drier. When biochar-sand mixtures are wetter, biochar particles’ elongated shape disrupts the packing of grains in the sandy matrix, increasing the volume between grains (interpores) available for water storage. These results imply that biochars with a high intraporosity and irregular shapes will most effectively increase water storage in coarse soils.

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Section: Discussionmentioning

confidence: 99%

Biochar particle size, shape, and porosity act together to influence soil water properties

et al. 2017

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“…The quality of soil aggregates can be also improved, as a result of the related interactions between Soil Organic Matter (SOM), minerals, clay, and microbiological activity (Fabbri et al, 2012). The cation exchange capacity (CEC) of a given soil indicates how well nutrients can be bound to it and, therefore, become available for plant uptake (Doan et al, 2015). The stability of biochar in soil may reach hundreds of years as indicated in recent studies, and is considered as a key parameter to evaluate its potential for CO 2 sequestration (Nguyen et al, 2010;Sarkhot et al, 2014).…”

Section: Biochar Production At Farm Scalementioning

confidence: 99%

Guidelines Towards Sustainable Agriculture in Small Mediterranean Islands

Komnitsas¹,

Doula²

2017

EJSD

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The objective of the present paper is to provide guidelines towards sustainable agriculture in small islands, with emphasis on the cultivation of Pistacia vera L. in Aegina island, Greece. The guidelines refer among others to the characteristics of the island, pressures from other sectors such as tourism, current cultivation practices, land uses and take into account the risk for groundwater contamination. Special attention is paid on agricultural waste management at farm scale for the production of compost and biochar and their subsequent application to soils, in order to improve soil quality parameters (e.g soil organic matter, soil aggregate stability, water holding capacity, cation exchange capacity), increase soil carbon sequestration and reduce the risk of groundwater contamination. Also, the role of the most important stakeholders towards sustainable agriculture is emphasized and discussed. The proposed approach will assist towards identification of pressures, environmental hotspots, potential lack of synergy between stakeholders and thus indicate mid-and long-term measures to mitigate impacts and contribute to sustainable agriculture.

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“…The vermicompost acquires several species of microflora, besides hormones and enzymes as it passes though the earthworms' gut (Pramanik et al 2007; Ievinsh 2011). Past studies have reported that vermicompost derived from animal manure stimulated seed germination (Atiyeh et al 2000; Zaller 2007; Lazcano et al 2010), enhanced plant growth (Edwards Clive 2004; Lazcano et al 2009; Samrot et al 2015), and the yield and the quality of fruits (Singh et al 2008; Doan et al 2015) of several plant species. They are also believed to induce resistance in plants against pests and disease (Yardim et al 2006; Edwards et al 2010; Serfoji et al 2010; Carr and Nelson 2014).…”

Section: Introductionmentioning

confidence: 99%

Detoxification of parthenium (Parthenium hysterophorus) and its metamorphosis into an organic fertilizer and biopesticide

Hussain

Abbasi

2017

Bioresour. Bioprocess.

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BackgroundVermicompost of the toxic and allelopathic weed parthenium (Parthenium hysterophorus) was explored for its possible use as an organic fertilizer. Replicated plant growth trials were conducted using four levels of parthenium vermicompost (0, 2.5, 3.75, and 5 t/ha) to assess their effects on the germination, growth, and fruition of a typical food plant ladies finger (Abelmoschus esculentus). Additionally the role of vermicompost in reducing plant pests and disease was evaluated.ResultsVermicompost encouraged the germination and growth of ladies finger at all levels of vermicompost application, with best results obtained in 5 t/ha treatments. The positive impact extended up to the fruit yield. Vermicompost application also improved the quality of fruits in terms of mineral, protein, and carbohydrate contents, and reduced the disease incidence and pest attacks.ConclusionsThe studies establish the fact that parthenium acquires all the qualities of a good organic fertilizer with concomitant loss of its toxic and allelopathic properties after it gets vermicomposted. The findings raise the prospects of economical and eco-friendly utilization of billions of tons of parthenium biomass which is generated annually but goes to waste at present.

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Impact of compost, vermicompost and biochar on soil fertility, maize yield and soil erosion in Northern Vietnam: A three year mesocosm experiment

Cited by 279 publications

References 50 publications

Biochar particle size, shape, and porosity act together to influence soil water properties

Biochar particle size, shape, and porosity act together to influence soil water properties

Guidelines Towards Sustainable Agriculture in Small Mediterranean Islands

Detoxification of parthenium (Parthenium hysterophorus) and its metamorphosis into an organic fertilizer and biopesticide

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