2014
DOI: 10.1590/0104-6632.20140313s00002512
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Abstract: -An organic-mineral fertilizer based on humic substances (HSs) and potassium was developed based on the alkaline extraction of HSs from peat. The HSs have interesting properties for use as a fertilizer since they improve the physical and chemical structure of the soil and provide a source of organic carbon which is readily absorbable by the plants, whereas potassium is a primary nutrient for plants. It was found that highly decomposed peats containing a small inorganic fraction are more favorable for the extra… Show more

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Cited by 33 publications
(36 citation statements)
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“…Further increase in the concentration (up to 5.0 N) seemed to have an oxidative disruption effect on organic molecules (Stevenson, 1982) that led to insignificant increase of HLS yield. The optimum concentration of KOH extractant seemed to depend on the HS source material; 0.25 N KOH for coal and compost (Asing et al, 2009), 3.5 N for leaching HS from leonardite (Canieren et al, 2017), and 0.5 N or lower for peat (Saito and Seckler, 2014).…”
Section: Optimum Conditions Of Extracting Hls From Scg Concentration mentioning
confidence: 99%
“…Further increase in the concentration (up to 5.0 N) seemed to have an oxidative disruption effect on organic molecules (Stevenson, 1982) that led to insignificant increase of HLS yield. The optimum concentration of KOH extractant seemed to depend on the HS source material; 0.25 N KOH for coal and compost (Asing et al, 2009), 3.5 N for leaching HS from leonardite (Canieren et al, 2017), and 0.5 N or lower for peat (Saito and Seckler, 2014).…”
Section: Optimum Conditions Of Extracting Hls From Scg Concentration mentioning
confidence: 99%
“…In contrast, humin is insoluble at all pH. Molecular weight and the attached side groups are variable in all these fractions [11,12]. This polymer compounds are highly resistant to further microbial degradation and varying combinations of organic molecules.…”
Section: Humic Substances-an Overviewmentioning
confidence: 99%
“…The situation creates the carbon content of coal getting higher. Humic acid is usually rich in carbon ranging between 41% and 57% and is capable of providing organic C that is readily absorbed by plants [10,18]. The numbers followed by the same lower case are not significant at the 5% level according to LSD…”
Section: Soil Analysis After Incubationmentioning
confidence: 99%