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12 articles for “Humic substances”
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Research ArticleOpen accessPhrase in the titlePhysico-Сhemical Parameters of Humic Substances of Brown Coal and their Effect on the Growth of Phoenix dactyliferaDamilya Konysbaeva, Bolat Yermagambet, Zhanar Kassenova et al.The motivation for the study was the need to obtain data on the effect of humic acids isolated from brown coal on soil fertility and plant development. In our study, we conducted experiments with plants to isolate humic substances from brown coal and study its physicochemical properties and the effect of the resulting fraction on the growth of Phoenix dactylifera … …OnLine Journal of Biological Sciences, Vol. 23, Issue 4 · 21 Sep 2023 · 4,936 accessesView PDFCite
Research ArticleOpen accessIn the keywordsSimple and Rapid Method of Isolating Humic Acids from Tropical Peat Soils (Saprists)Shamsuddin Rosliza, Osumanu Haruna Ahmed, Kasim Susilawati et al.Problem Statement: The isolation (extraction, fractionation and purification) of humic acids (HA) from soils is laborious, time consuming and expensive. The extraction, fractionation and purification periods of these substances vary from 12 h-7 days. In order to facilitate production of HA at competitive cost, this study was conducted to investigate whether a simple and rapid procedure could be developed for … …American Journal of Applied Sciences, Vol. 6, Issue 5 · 31 May 2009 · 8,552 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffects of Extractants on the Yields and Selected Chemical Characteristics of Humic Acids Isolated from Tropical Saprists PeatLee Jia Huey, Osumanu Haruna Ahmed, Nik Muhamad Ab. MajidProblem statement: Humic acids are beneficial to soil aggregation, binding of heavy metal, plant growth and many more. However, the isolation of Humic Acids (HA) from its origin is not only time-consuming, but the isolation is also affected by factors such as temperature and the types of extractants and their concentrations. Different concentrations of extractant are said to alter the … …American Journal of Applied Sciences, Vol. 7, Issue 7 · 31 Jul 2010 · 7,503 accessesView PDFCite
Research ArticleOpen accessIn the keywordsSimple Method of Purifying Humic Acids Isolated from Tropical Hemists (Peat Soil)Susilawati Kasim, Osumanu Haruna Ahmed, Nik Muhamad Ab. Majid, Mohd Khanif YusopThe objectives of this study were: To investigate whether a purification period of HA isolated from Hemists peat soils could be reduced and to investigate whether distilled water could be used to purify HA isolated from Hemists peat soils. Standard procedures were used to extract and fractionate HA in a Hemists peat soil. The isolated HA was purified by suspending … …American Journal of Applied Sciences, Vol. 5, Issue 12 · 31 Dec 2008 · 7,151 accessesView PDFCite
Research ArticleOpen accessIn the keywordsDetermination of Minimal Duration Essential for Isolation of Humic Acids From Soils in Forest Restoration ProgrammesMohd Ramzan Nur Hanisah, Osumanu Haruna Ahmed, Kasim Susilawati et al.This study was conducted to investigate whether a simple and rapid method could be developed for extracting, fractionating and purifying soil HA in forest rehabilitation programmes. Humic acids from 10 g of soil were extracted with 100 mL of 0.10 M NaOH. Different extraction periods (4, 8, 12, 16, 20 and 24 h) were tested. Samples were centrifuged (16,211 G … …American Journal of Agricultural and Biological Sciences, Vol. 3, Issue 3 · 30 Sep 2008 · 8,173 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffects of Extraction and Fractionation Period on the Yield of a Tropical Peat Soil (Hemists) Humic AcidsSusilawati Kasim, Osumanu Haruna Ahmed, Nik Muhamad Ab. Majid, Khanif YusopThe isolation of humic acids from soils is laborious and time consuming. Factors that affect the yield of humic acids isolated from soils include extraction, fractionation and purification periods. This study was conducted to investigate whether a relationship could be separately established between extraction time, fractionation time, and the yield of humic acids of a tropical peat soil (Hemists), as … …American Journal of Agricultural and Biological Sciences, Vol. 2, Issue 3 · 30 Sep 2007 · 8,099 accessesView PDFCite
Research ArticleOpen accessIn the abstractMilk Content and Milk Quality of Sheep of the Kazakh Fat-Tailed Semi-Rough-Haired Breed with Pasture ContentDulat Ibrayev, Saukymbek Shauyenov, Gulmira Zhakupova et al.The article presents the results of a study on the effect of top dressing and feed additives based on humic substances on milk productivity, the quality of milk of sheep of the Kazakh fat-tailed semi-coarse breed, and the resulting cheese in pasture conditions. In total, 90 heads of sheep of the Kazakh short-tailed semi-rough-haired breed were used in the experiment. … …OnLine Journal of Biological Sciences, Vol. 22, Issue 4 · 25 Oct 2022 · 5,270 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Different Exogeneous Compounds on Biosorption of EndosulfanDeepika Dave, A. K. DikshitProblem statement: Organochlorine pesticide endosulfan is widely used as a replacement for DDT and dieldrin in many parts of the world. Presence of residual pesticides in the water, air and soil environment was confirmed since 1960s. Such Persistent Organic Pollutants (POPs) are of concern because of their long-term subtle effects on hormones, the immune system and reproduction. Therefore, it becomes … …American Journal of Environmental Sciences, Vol. 7, Issue 3 · 11 Jul 2011 · 7,202 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Organic Based N Fertilizer on Dry Matter (Zea mays L.), Ammonium and Nitrate Recovery in an Acid Soil of Sarawak, MalaysiaSusilawati Kasim, Osumanu Haruna Ahmed, Nik Muhamad Ab. Majid et al.Problem statement: Exchangeable ammonium (NH4+) could be recovered by humic and fulvic acids from humic substances. The ability of these acids in fixing or retaining NH4+ has been demonstrated in many findings and reports. Both acids could affect the plant growth, nutrients uptake by enhancing photosynthesis rate and root growth among others. Thus, in this study, the effect of both … …American Journal of Applied Sciences, Vol. 6, Issue 7 · 31 Jul 2009 · 8,244 accessesView PDFCite
Research ArticleOpen accessIn the abstractReducing Ammonia Loss from Urea by Mixing with Humic and Fulvic Acids Isolated from CoalAmeera Abdul Reeza, Osumanu Haruna Ahmed, Nik Muhamad Nik Ab. Majid, Mohamadu Boyie JallohProblem statement: Ammonia volatilization is a major pathway for nitrogen loss from surface applied urea. While all top-dressed ammonia and ammonium based N fertilizers can volatilize, the potential loss is greatest with urea and fluids containing urea. As much as 20-50% of N applied to soils is lost through volatilization alone. Thus, the objective of this laboratory study was to … …American Journal of Environmental Sciences, Vol. 5, Issue 3 · 30 Jun 2009 · 10,897 accessesView PDFCite