Humic and fulvic acids as biostimulants in horticulture

Canellas, Luciano P.; Olivares, Fábio Lopes; Aguiar, Natália Oliveira; Jones, Davey L.; Nebbioso, Antonio; Mazzei, Pierluigi; Piccolo, Alessandro

doi:10.1016/j.scienta.2015.09.013

Cited by 736 publications

(584 citation statements)

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“…chemical constituents of wheat plant (Kandil et al, 2016). Potassium humate increases the rate of nutrient uptake, enhances plant biomass and reduces the soil compaction (Canellas et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Response of Salt-Stressed Wheat ( Triticum aestivum L.) to Potassium Humate Treatment and Potassium Silicate Foliar Application

et al. 2017

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T HE PRESENT study was carried out to investigate the effect of high NaCl concentrations on some growth parameters and physiological processes of wheat (Triticum aestivum L.) plant. The results indicated that Gemeza.9 was the most sensitive cultivar to high salinity levels compared to all tested wheat cultivars. Moreover, salinity stress caused a reduction in the germination percentage by 65% and all growth parameters by 21%, 25% and 60% in the lengths of shoot, root and leaf area, also by 27% and 48% in fresh weights of shoot, root and 40% and 75% in dry weights of shoot and root. It also increased the activity of antioxidant enzymes (peroxidase and catalase), lipid peroxidation and ascorbic acid content. Salinity induced increase of osmolytes compounds such as total soluble proteins, carbohydrates and amino acids. Furthermore, all measured yield parameters, the percentage of grain's maturity and productivity were highly decreased. Accordingly, the role of potassium humate and potassium silicate either sole or combined in alleviating the toxic effect of salinity was also studied. Results showed that application of potassium humate as sole had a stimulatory effect higher than potassium silicate or their combination. It increased the germinating percentage by 128% at 200mM NaCl. In addition, potassium humate and potassium silicate increased the photosynthetic activity, decreased the activity antioxidant enzymes (Peroxidase and Catalase) as well as biosynthesis of MDA and ascorbic acid also they induced increase biosynthesis of proteins and carbohydrates in yielded grains. Accordingly, our study recommends the application of potassium humate as an organic fertilizer and potassium silicate as a foliar spray for improving the quality and quantity of the sensitive wheat cultivar Gemeza.9 cultivated in salty lands and increases its productivity.

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Section: Introductionmentioning

confidence: 99%

Response of Salt-Stressed Wheat ( Triticum aestivum L.) to Potassium Humate Treatment and Potassium Silicate Foliar Application

et al. 2017

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“…Referring the number of stems, the evaluation of plant branching as consequence of hormone production for A. chroococcum and P. fluorescens and how it affects the number of branchesis recorded in table 1, 30 d after treatment apply the effects of the applications can be observable, at the end of the experimental cycle the treatment with humic This response can be related with the effects that humic and fulvic acids in the soil, on characteristics as nutrient bioavailability (principally phosphorus) and microbial population (Delgado et al, 2002;Canellas et al, 2015). Puglisi et al (2008) report an increase on the exudate productions through plant roots, as a consequence of substances application including humic and fulvic acids and the use of soil conditioner as compost, increasing the activity of some beneficial microorganism present naturally in cultivated soil.…”

Section: Resultsmentioning

confidence: 99%

“…However it cannot be recommended as the only source of nutrients, as the plant response to these substances is associated to interactions between membrane transportations responsible of nutrient absorption from humic and fulvic acids (Canellas et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Effect of organic fertilization on yield and quality of rosemary (Rosmarinus officinalis L.) essential oil

2017

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RESUMENRosemary production (Rosmarinus officinalis L.) in Colombia is destined mainly for international markets (2.898 t in 2006), Although the national demand is low, this is a promising crop in some areas of the country, having potential to enhance producers life quality through the implementation of sustainable crops allowing the decrease of non-beneficial conditions in agriculture labors. Studying the response to the application of biofertilizers as an alternative to implement rosemary organic crops has become an important tool for the integrated crop management. In this research three commercial biofertilizer applied to the soil were evaluated (Azotobacter chroococcum, Pseudomonas fluorescens, humic and fulvic acids) facing a control treatment, significant differences were found regarding the number of stems growth per plant, however variables as oil extract volume and plant height did not present significant differences when compared with control treatment.La producción de romero (Rosmarinus officinalis L.) en Colombia está destinada principalmente a la exportación (2.898 t para el 2006) pues la demanda a nivel nacional es baja, sin embargo este es un cultivo promisorio en ciertas zonas del país, siendo potencial para algunos productores debido al mejoramiento de la calidad de vida a través de la implementación de cultivos sostenibles que permitan disminuir la nocividad de las labores agrícolas. Es así que conocer la respuesta de esta especie frente a la aplicación de biofertilizantes como alternativa para implementar cultivos de romero orgánicos se convierte en una herramienta base para el manejo integrado del cultivo. En esta investigación se evaluaron tres productos biofertilizantes comerciales aplicados al suelo (A. chroococcum, P. fluorescens, ácidos húmicos y fúlvicos) frente a un testigo, se encontraron diferencias significativas en el número de tallos generados por las plantas, sin embargo variables como el volumen de aceite esencial extraído y la altura de la planta no presentaron diferencias significativas con respecto al testigo.

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“…These substances can immobilize and neutralize heavy metals, contributing to the process of soil detoxification; however, their main use is to enhance nutrient and micronutrient uptake including their bioavailability and, as a consequence, increase growth, yield, and product quality (Piccolo 1996;Tipping Responsible editor: Elżbieta Jamroz Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11368-017-1907-x) contains supplementary material, which is available to authorized users. 2002;Canellas et al 2002Canellas et al , 2014Canellas et al , 2015Nardi et al 2016). For these reasons, it seems that the use of humic acids as agents which improve soil properties and affect the amount and quality of crops, it may be a perspective direction in the development of modern agriculture.…”

Section: Introductionmentioning

confidence: 99%

“…Humic substances (HS) are natural organic compounds which are sourced not only from soil but also from compost, manure, peat and, e.g., coals such as lignite and leonardite (Canellas et al 2015;Fuentes et al 2016;Yakimenko et al 2016;Ciarkowska et al 2017). Increased production and continuous expansion of the range of such products have been one of the main trends on fertilizer market.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the possibilities of using humic acids obtained from lignite in the production of commercial fertilizers

Huculak-Mączka

Hoffmann

2018

J Soils Sediments

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Purpose Technological progress and high market demand contributed to a significant interest in the production of fertilizers based on humic acids. The aim of this study was to evaluate the possibilities of using humic acids obtained from lignite in the production of new commercial products. For this purpose, it is necessary to determine the quality standard requirements for such material. Properties of humic acids depend on source of origin as well as method of its extraction. Materials and methods The humic acids were extracted from polish deposit of lignite-Sieniawa Lubuska by alkaline extraction using for this purpose six kinds of extractants: 0.1 M NaOH and 0.25 M NaOH, 0.1 M KOH and 0.25 M KOH, and 0.1 M Na 4 P 2 O 7 and 0.25 M Na 4 P 2 O 7 . The humic samples were used in solid powder form and characterized by UV-Vis spectroscopy, 13 C NMR spectroscopy, fluorescence spectroscopy, and thermal analysis. Results and discussion The determining factor influencing a degree of humic acids extraction from lignite and their structure is type of extractant. The largest efficiency of extraction (about 50%) was obtained with the use of NaOH solutions. All examined humic acids were generally characterized by simple and heterogeneous molecularly structure with low molecular weight and low aromatic polycondensation. Therefore, it can be concluded that humic acids extracted with NaOH and KOH solutions are less condensed than those extracted with Na 4 P 2 O 7 solutions. It can suggest that humic acids obtained from lignite using solutions of Na 4 P 2 O 7 are characterized by a low transformation degree and greater amount of carboxyl groups. Conclusions Low rank coal can be successfully used in agriculture as a rich source of humic acids. Reagent used in their extraction, apart from high efficiency should have a neutral impact on their structure. Studies on the physicochemical properties of humic acids can be helpful in predicting behaviors of such fertilizer components in the environment and in inventing new products taking the principles of sustainable development into consideration.

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Humic and fulvic acids as biostimulants in horticulture

Cited by 736 publications

References 125 publications

Response of Salt-Stressed Wheat ( Triticum aestivum L.) to Potassium Humate Treatment and Potassium Silicate Foliar Application

Response of Salt-Stressed Wheat ( Triticum aestivum L.) to Potassium Humate Treatment and Potassium Silicate Foliar Application

Effect of organic fertilization on yield and quality of rosemary (Rosmarinus officinalis L.) essential oil

Evaluation of the possibilities of using humic acids obtained from lignite in the production of commercial fertilizers

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