Chemical composition and bioactivity properties of size-fractions separated from a vermicompost humic acid

Canellas, Luciano P.; Piccolo, Alessandro; Dobbss, Leonardo Barros; Spaccini, Riccardo; Olivares, Fábio Lopes; Zandonadi, Daniel Basílio; Façanha, Arnoldo Rocha

doi:10.1016/j.chemosphere.2009.10.018

Cited by 173 publications

(136 citation statements)

References 32 publications

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“…These results are in agreement with those of Canellas et al (2010), indicating that the humic fraction typically predominates in tropical soils. The greatest amount of H in this study compared with other alkaline soluble fractions favours the structural stability of sandy textured soils, due to its greater recalcitrance compared to labile fractions, such as fulvic and humic acids.…”

Section: --------------------------% Relative Toc--------------------supporting

confidence: 82%

“…When the proportion of non-leguminous plants in mixtures containing leguminous ones increased (50% L and 50% NL and 75% L and 25% NL), a lower drop was observed, being 15% (Table 3). A decrease in OM content from soil cultivation, especially in the early years, has been reported in the literature (CUNHA et al, 2009a;CANELLAS et al, 2010). Moreover, the use of irrigation associated with high temperatures and the sandy texture of Typic Plinthustalf soil also may have contributed to the reduced C content.…”

Section: Humic Substance Quantificationmentioning

confidence: 96%

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Humified Fraction of Organic Matter Due to Plant Mixture Cultivation

et al. 2016

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-The aim of this study was to assess the organic matter changes in quantity and quality, particularly of the humic fraction in the surface layer (0-20 cm), of a Typic Plinthustalf soil under different management of plant mixtures used as green manure for mango (Mangifera indica L.) crops. The plant mixtures, which were seeded between rows of mango trees, were formed by two groups of leguminous and non -leguminous plants. Prior to sowing, seeds were combined in different proportions and compositions constituting the following treatments: 100% non-leguminous species (NL); 100% leguminous species (L); 75% L and 25% NL; 50% L and 50% NL; 25% L and 75% NL; and 100% spontaneous vegetation, considered a control. The plant mixtures that grew between rows of mango trees caused changes in the chemical composition of the soil organic matter, especially for the treatments 50% L and 50% NL and 25% L and 75% NL, which increased the content of humic substances in the soil organic matter. However, the treatment 25% L and 75% NL was best at minimising loss of total organic carbon from the soil. The humic acids studied have mostly aliphatic characteristics, showing large amounts of carboxylic and nitrogen groups and indicating that most of the organic carbon was formed by humic substances, with fulvic acid dominating among the alkali soluble fractions.Keywords: Humic substances. Infrared spectroscopy. Mangifera indica. Soil quality. Soil management. FRAÇÕES HUMIFICADAS DA MATÉRIA ORGÂNICA EM FUNÇÃO DO CULTIVO DE COQUETÉIS VEGETAISRESUMO -O objetivo desse trabalho foi avaliar as mudanças na quantidade e qualidade da matéria orgânica, particularmente da fração húmica, na camada superficial (0-20 cm) de um Argissolo Vermelho-Amarelo sob diferentes coquetéis vegetais usados como adubação verde da cultura da mangueira (Mangifera indica L.). Os coquetéis vegetais, semeados nas entrelinhas das mangueiras, foram formados por dois grupos de espécies leguminosas e não-leguminosas. As sementes, antes da semeadura, foram combinadas em diferentes composições e proporções que constituíram os tratamentos: 100% de espécies não-leguminosas (NL); 100% de espécies leguminosas (L); 75% L e 25% NL; 50% L e 50% NL; 25% L e 75% NL; e 100% vegetação espontânea, considerado como testemunha. Constatou-se que a aplicação de coquetéis vegetais na entrelinha da cultura da mangueira promoveu alterações na composição química da matéria orgânica do solo, com destaque para os tratamentos 50% L e 50% NL e 25% L e 75% NL que aumentaram o conteúdo de substâncias húmicas na matéria orgânica do solo. Não obstante, o tratamento 25% L e 75% NL foi o indicado para minimizar as perdas de carbono orgânico total do solo. Os ácidos húmicos estudados são de característica mais alifática apresentando grande quantidade de grupos carboxílicos e nitrogenados e sendo a maior parte do carbono orgânico do solo constituído por substâncias húmicas, tendo a fração ácidos fúlvicos como dominante entre as frações alcalino solúveis.Palavras-chaves: Espectroscopia de infravermelh...

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Section: --------------------------% Relative Toc--------------------supporting

confidence: 82%

Section: Humic Substance Quantificationmentioning

confidence: 96%

Humified Fraction of Organic Matter Due to Plant Mixture Cultivation

et al. 2016

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“…Recently, Lehmann and Kleber (2015) supported a theory proposed by Stevenson (1985Stevenson ( , 1994 and largely proved by Piccolo and Mbagwu (1999), Piccolo (2001), Canellas et al (2010) and Nebbioso and Piccolo (2012), for which SOM is a continuum of progressively decomposing organic compounds. All these authors sustain that there are no large molecular-size 'humic substances', but aggregates of small molecules which persistence in the soil depends from nature of SOM, ecological/climatic frame and type of soil management.…”

Section: Litter Quality and Its Content Of Mineral Elementsmentioning

confidence: 67%

Humusica 1, article 2: Essential bases—Functional considerations

Zanella

Berg

Ponge

et al. 2018

Applied Soil Ecology

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“…Promotion of root system development is the most commonly reported initial effect of humic acids on plant growth. For example, enhancement of lateral roots or general increased seedling root growth has been reported with tomato (Adani et al 1998;Canellas et al 2011), Arabidopsis Canellas et al 2010), wheat (Tahir et al 2011;Peng et al 2001), maize (Canellas et al 2002 andCanellas et al 2009;Eyheraguibel et al 2008;Jindo et al 2012), pepper (Cimrin et al 2010), and Lantana camara (Costa et al 2008). Shoot growth promotion by humic acids has also been reported with cucumber (Mora et al 2010), tomato (Adani et al 1998;Lulakis and Petsas 1995), wheat (Tahir et al 2011), maize (Eyheraguibel et al 2008), and pepper (Cimrin et al 2010).…”

Section: Specific Effects Of Humic Acids On Plantsmentioning

confidence: 89%

Agricultural uses of plant biostimulants

2014

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Background Plant biostimulants are diverse substances and microorganisms used to enhance plant growth. The global market for biostimulants is projected to increase 12 % per year and reach over $2,200 million by 2018. Despite the growing use of biostimulants in agriculture, many in the scientific community consider biostimulants to be lacking peer-reviewed scientific evaluation. Scope This article describes the emerging definitions of biostimulants and reviews the literature on five categories of biostimulants: i. microbial inoculants, ii. humic acids, iii. fulvic acids, iv. protein hydrolysates and amino acids, and v. seaweed extracts.Conclusions The large number of publications cited for each category of biostimulants demonstrates that there is growing scientific evidence supporting the use of biostimulants as agricultural inputs on diverse plant species. The cited literature also reveals some commonalities in plant responses to different biostimulants, such as increased root growth, enhanced nutrient uptake, and stress tolerance.

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Chemical composition and bioactivity properties of size-fractions separated from a vermicompost humic acid

Cited by 173 publications

References 32 publications

Humified Fraction of Organic Matter Due to Plant Mixture Cultivation

Humified Fraction of Organic Matter Due to Plant Mixture Cultivation

Humusica 1, article 2: Essential bases—Functional considerations

Agricultural uses of plant biostimulants

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