scholarly journals Natural and artificial humic substances to manage minerals, ions, water, and soil microorganisms

2021 ◽  
Author(s):  
Fan Yang ◽  
Chunyu Tang ◽  
Markus Antonietti
Keyword(s):  
Soil Fertility ◽  
Humic Substances ◽  
Humic Substance ◽  
Soil Microorganisms ◽  
Insoluble Phosphorus

Artificial humic substance is a new chemical tool, and effects, such as dissolving insoluble phosphorus minerals, recovering phosphorus, improving soil fertility and reducing typical pollutants toxicity can now be addressed, quantified, and optimized.

RHEOLOGICAL PROPERTIES OF HUMIC SUBSTANCES OF PEAT AND BROWN COAL

2021 ◽  
pp. 169-174
Author(s):  
Ivan I. Lishtvan ◽  
Vera N. Aleinikova
Keyword(s):  
Rheological Properties ◽  
Humic Substances ◽  
Structure Formation ◽  
Humic Substance ◽  
Brown Coal ◽  
Oil Wells ◽  
Alkaline Media ◽  
Rheological Parameters ◽  
Acid Media ◽  
Brown Coals

Knowledge about structure and rheological peculiarities of drilling solutions and reagents applied for the proceeding of oil wells has significant value for the forecasting of oil wells drilling. The research results of the structure of the humic substances of peat and brown coals precipitated in different pH ranges from the standpoint of their ability to structure formation on the base of the rheological curves obtaining of the flow of their dispersions and determining of their rheological parameters in terms of their application in drilling practice are given in the article. It is established that during transition from fraction, beset into alkaline media (12.0–8.5) to fraction beset into acid media (5.0–2.0) the decrease of the rheological indicators of caustobiolate humic substance is occurred. Rheological curves of the flow of the disperse of caustobiolate humic substances of the fraction 1 and 2 are characterized for strong fossil structures, disperses of humic substances of the fraction 3 is for less strong coagulation structures. Less structured are humic substances of brown coal so that their use is preferable for the regulation of the structure and rheological peculiarities of drilling solutions.

scholarly journals Fertigation of ‘BRS Princesa’ banana with humic substance and saponin-based plant extracts

Revista CERES ◽  
2017 ◽  
Vol 64 (4) ◽  
pp. 392-398
Author(s):  
Diego Magalhães de Melo* ◽  
Eugênio Ferreira Coelho ◽  
Raul Castro Carriello Rosa ◽  
Ana Lucia Borges ◽  
Djalma Barbosa dos Santos ◽  
...  
Keyword(s):  
Humic Substances ◽  
Humic Substance ◽  
Plant Extract ◽  
Plant Extracts ◽  
Block Design ◽  
Fulvic Acids ◽  
Growth And Yield ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
Banana Cultivar

ABSTRACT The use of humic substances and plant extract has been increasing mainly in organic crop systems without scientific-based recommendations. Research is necessary to evaluate the feasibility and the recommendations of these substances. The objective of this work was to evaluate the effect of humic substances (humic and fulvic acids) applied by fertigation with and without saponin-based plant extracts on growth and yield of ‘BRS Princesa’ banana. The experiment was carried out using the banana cultivar ‘BRS Princesa’, at a spacing of 2.0 × 2.5 m, fertigated by drip irrigation in a Dystric Densic Xantic Ferralsol, at the Recôncavo da Bahia, Brazil. Treatments consisted of five doses of humic substances (0.0; 70; 105; 140, and 210 L ha-1cycle-1) applied with and without a saponin-based plant extract in a randomized block design in split-plot scheme. The following growth variables were evaluated: number of leaves, pseudostem height, pseudostem diameter, and length and width of the third leaf. The number of fruits/hand and hands/bunch, hand and bunch yield, and length and fruit diameter of the second central hand were evaluated during harvest. The doses of humic substances influenced only pseudostem height. Hand yield, as well as fruit length and diameter of ‘BRS Princesa’ banana were higher in plants fertigated with humic substance and plant extract in comparison with plants fertigated with only humic substance.

The Effects of Humic Substances and Humic Substance-Based Silver Nanocomposites on the Viability of Rhizospheric Microorganisms

2021 ◽  
Vol 16 (4) ◽  
pp. 525-531
Author(s):  
A. I. Perfileva ◽  
O. A. Nozhkina ◽  
G. P. Aleksandrova ◽  
M. S. Karepova ◽  
N. S. Zabanova ◽  
...  
Keyword(s):  
Humic Substances ◽  
Humic Substance ◽  
Silver Nanocomposites ◽  
Rhizospheric Microorganisms

Soil Microorganisms and Soil Fertility

2015 ◽  
pp. 23-43
Author(s):  
Richard P. Dick ◽  
Charles Yamoah ◽  
Mateugue Diack ◽  
Aminata N. Badiane
Keyword(s):  
Soil Fertility ◽  
Soil Microorganisms

Soil Microorganisms and Soil Fertility

2001 ◽  
Author(s):  
Guanglong Tian ◽  
Fusako Ishida ◽  
Dyno Keatinge ◽  
Richard P. Dick ◽  
Charles Yamoah ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Soil Microorganisms

MINIMIZING SOIL CULTIVATION INFLUENCE FOR FERTILITY STATUS OF HEAVY LOAMY SOILS IN SPRING AND WINTER WHEAT SEEDING

2016 ◽  
Vol 1 (2) ◽  
pp. 7-11
Author(s):  
Мельникова ◽  
Natalya Melnikova ◽  
Нечаева ◽  
Elena Nechaeva ◽  
Редин ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Soil Microorganisms ◽  
New Technologies ◽  
Mechanical Load ◽  
Active Surface ◽  
Soil Microflora ◽  
Point Of View ◽  
Forest Steppe ◽  
Biochemical Processes

The purpose is to justify the use of minimum and zero tillage in conditions of forest-steppe Zavolzhye region from the position of the biological activity of the soil. One of the factors forming and determining the fertility of the soil, is the activity of microorganisms that inhabit it, the active surface which reaches up to several hundred acres for 1 ha of surface topsoil. Important role in building of soil fertility is the number of major groups of microorganisms, which, being the catalysts of metabolism, objectively reflect the nature of biochemical processes. Another academician S. P. Kostychev (1937) pointed out that without the study of biodynamics the knowledge of the soil, especially from the agronomic point of view, may not be complete. Microorganisms occupy a key position in maintaining biochemical capacity of the soil, so monitoring of soil microflora is essential for the maintenance and reproduction of its fertility. This work is devoted to studying the role of soil microorganisms in the process of maintaining and reproduction of soil fertility in the development of new technologies in agriculture. The article presents data on the effect of basic tillage on the number of different groups of soil microorganisms (micromycetes, bacteria, actinomycetes), Shows the number of soil microorganisms, such as micromycetes (mold fungi) and bacteria are significantly influenced by seasonal changes in temperature and humidity than the soil treatment methods. From which it follows that the reduction of the mechanical load on the soil in the forest-steppe of Zavolzhye a significant impact on the number of major groups of microorganisms has not.

scholarly journals Characterization of Humic Substance Extracted from Andisols, Spodosols, Peat, and Lignite

2018 ◽  
Vol 15 (1) ◽  
pp. 35 ◽  
Author(s):  
Eka Rahmi ◽  
Suwardi Suwardi ◽  
Basuki Sumawinata
Keyword(s):  
Humic Substances ◽  
Humic Substance ◽  
Organic Content ◽  
Plant Growth And Development ◽  
Positive Effects ◽  
Significant Interest ◽  
Aliphatic Group ◽  
Different Characteristics ◽  
Different Sources

Soil and other materials with high C-organic content are potential natural sources of humic substances. Until now the differences in the characteristics of such humic substances that are extracted from different sources have not been widely studied. Thus, this study was aimed to characterize humic substances extracted from andisols, spodosols, peat, and lignite. The highest C-organic (48.8%) and N (7.6%) were obtained from peat and spodosols, respectively. The andisols humic substance produced the highest total acidity (6.52 cmol kg<sup>-1</sup>). Humic substance extracted from spodosols was a mostly aliphatic group and phenolate –OH, while that of andisols and lignite contained more aromatic group and phenolate –OH, whereas the humic substance from peat was a predominantly aliphatic group and –COOH. The surface morphology of the humic substances observed using SEM showed varying densities and shapes due to differences in their respective degree of decomposition and the formation process involved. There has been significant interest in investigating the different characteristics of the humic substance. The type humic substances are important to be known considering of their positive effects on soil fertility and plant growth and development.

scholarly journals Humic substance and substrate based on babassu decomposed stem in the production of sunflower seedlings

2020 ◽  
Vol 9 (8) ◽  
pp. e456986098
Author(s):  
Carlos Alberto Araújo Costa ◽  
Raissa Rachel Salustriano da Silva-Matos ◽  
Gênesis Alves de Azevedo ◽  
Thaynara Coelho de Moraes ◽  
Ramón Yuri Ferreira Pereira ◽  
...  
Keyword(s):  
Experimental Design ◽  
Humic Substances ◽  
Plant Height ◽  
Humic Substance ◽  
Root Length ◽  
Root Volume ◽  
Basal Diameter ◽  
Alternative Substrates ◽  
New Crops ◽  
Number Of Leaves

Our objective was to investigate the influence of alternative substrates based on stem decomposed by babassu and humic substances in the production of sunflower seedlings. The experimental design was randomized blocks, in a 3 x 4 factorial scheme (substrate x humic substances). Twelve treatments were studied, T1 (100% babassu stem decomposed (BDS) + 0 ml L-1 HS), T2 (100% BDS + 12.5 ml L-1 HS), T3 (100% BDS + 25 ml L-1 HS), T4 (100% DBS + 50 ml L-1 HS), T5 (50% DBS + 50% LAd + 0 ml L-1 HS), T6 (50% DBS + 50% LAd + 12, 5 ml L-1 HS), T7 (50% DBS + 50% LAd + 25 ml L-1 HS), T8 (50% DBS + 50% LAd + 50 ml L-1 HS), T9 (100% LAd + 0 ml L-1 HS), T10 (100% LAd + 12.5 ml L-1 HS), T11 (100% LAd + 25 ml L-1 HS) and T12 (100% LAd + 50 ml L-1 HS). Each treatment was performed in four replications with one seedling per plot, totaling 48 plots. The DBSxHS interaction provided increases in root length, root volume, basal diameter, number of leaves, plant height and parameters related to inflorescence. The substrate with 100% decomposed babassu stem, together with the dose of 12.5% humic substance, is the best option for producing 'IAC Uruguay' sunflower seedlings. Further research on the use of DBS and HS is needed to address the use and purpose in producing new crops.

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