scholarly journals Assessment of phytomeliorative efficiency of Kochia scoparia (L.) schrad.

2019 ◽  
pp. 15-18
Author(s):  
Konstantin Evgenyevich Denisov ◽  
Petr Vladimirovich Tarasenko ◽  
Ilya Sergeevich Poletaev ◽  
Valentin Vasylyevich Zuev
Keyword(s):  
Sewage Sludge ◽  
Water Permeability ◽  
Water Resistance ◽  
Organic Fertilizers ◽  
Soil Density ◽  
Annual Grass ◽  
Kochia Scoparia ◽  
Southern Chernozem ◽  
Combined Action ◽  
High Doses

  Phytomeliorative efficiency of the annual grass Kochia scoparia (L.) schrad was assessed. The experiments were conducted on the solonetz of the southern chernozem. It was revealed that the application of high doses of sewage sludge (from 50 to 200 t / ha) contributed to an increase in the yield of green mass of Kochia scoparia by 133–362%. After the combined action of annual grass crops and organic fertilizers, the soil density decreased from 1.47 g / cm3 in the solonetz to 1.25 / cm3 in the variant with a dose of 200 t / ha, water resistance for three years of research increased by 37.8%, water permeability increased by more than 5 times.

Effiency of organic fertilizers for corn

2021 ◽  
Vol 03 (01) ◽  
pp. 72-74
Author(s):  
Nərgiz Musa qızı Nəsirli ◽  
Keyword(s):  
Natural Resources ◽  
Soil Fertility ◽  
Key Words ◽  
Quality Indicators ◽  
New Technologies ◽  
Normal Development ◽  
Natural System ◽  
Organic Fertilizers ◽  
High Doses ◽  
Technical Measures

Pollution of the environment with waste is the basis of the degradation of the natural system. To prevent this, it is necessary to protect natural resources as much as possible and organize the recycling of waste. Azerbaijan has sufficient resources to prepare organic fertilizers based on new technologies. The presented article discusses the damage caused to the environment by pollution of lands of Neftchala region. The need for agro-technical measures to restore such areas that have lost their fertility is emphasized. In landscaping research, it is recommended to grow soybeans on such lands and apply high doses of organic fertilizers to ensure their normal development. Key words: soil fertility, corn, nutrients, productivity, quality indicators

scholarly journals Regulatory and technological prerequisites of the use of sewage sludge for the production of organic fertilizers

2020 ◽  
pp. 162-170
Author(s):  
R. Edgecock ◽  
V. V. Bratishko ◽  
I. V. Zinchenko ◽  
S. H. Karpus ◽  
D. O. Milko ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Municipal Wastewater ◽  
Raw Materials ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Raw Material ◽  
Organic Fertilizers ◽  
Mineral Fertilizers

Annotation Purpose. Summarize the regulatory and technological requirements for the production of organic (organo-mineral) fertilizers on the base of sewage sludge. Methods. Analysis and generalization of the requirements of regulatory documents on the management of organic waste and their use as raw materials for the production of organic fertilizers and soil improvers. Results. The current legislative, departmental and regulatory documentary base in Ukraine concerning the treatment of sediment resulting from biological sewage treatment at municipal wastewater treatment plants for its further use in agriculture as fertilizers is analysed. Indicators are identified and analysed to determine the possibility, feasibility, efficiency and scope of organic fertilizers produced using sewage sludge. The analysis of changes in the content of organic matter and total nitrogen in the sewage sludge during its storage at the sewage treatment plant sites is presented. The technological feasibility of using sludge of different shelf life in composting production has been determined. Conclusions 1. The regulatory framework of Ukraine contains a sufficiently complete list of indicators that should be met by organic raw materials (sewage sludge) for further use as organic fertilizers. Some of these indicators – bio security and heavy metals content – can be improved in the composting process of fertilizers. 2. Fresh sediment, as well as sediment accumulated in the last late autumn and winter periods, is of main value for use as a raw material in the production of organic fertilizers. 3. The use in the production of compost sludge stored on sludge sites for a period of half a year or more requires special control of the process of decontamination. In this case, it is advisable to use additional means of wastewater decontamination. Keywords: heavy metals, manure, humus, decontamination, composting, organic fertilizers, sewage sludge.

scholarly journals The influence of long-term sewage sludge application on the activity of phosphatases in the rhizosphere of plants

2008 ◽  
Vol 53 (No. 9) ◽  
pp. 375-381 ◽  
Author(s):  
J. Balík ◽  
D. Pavlíková ◽  
V. Vaněk ◽  
M. Kulhánek ◽  
B. Kotková
Keyword(s):  
Sewage Sludge ◽  
Fertilizer Application ◽  
Water Soluble ◽  
Organic Fertilizers ◽  
Lower Content ◽  
Alkaline Phosphatases ◽  
Soil P ◽  
Water Soluble P ◽  
Soluble P

Model experiments using rhizoboxes were carried out in order to evaluate the influence of different plants (wheat, rape) on the changes in water extractable contents of P, the pH/H2O value and the activity of acidic and alkaline phosphatase in soil of plant rhizosphere. For this experiment, a Cambisol with different long-term fertilizing systems was used: (i) control (with no fertilizer application), (ii) sewage sludge, and (iii) manure. A lower content of water-soluble P was observed in close vicinities of root surfaces (up to 2 mm) at all the studied variants. The control (non-treated) variant reflected a significantly lower content of water-soluble P in the rhizosphere compared to the fertilized ones. The activities of the acidic and alkaline phosphatases were significantly higher in the rhizosphere compared to the bulk soil (soil outside the rhizosphere). The long-term application of organic fertilizers significantly increased phosphatase activity; the activity of the acidic phosphatase was significantly higher in the rhizosphere of rape plants compared to wheat. The variant treated with manure exhibited an increased activity of both the acidic and alkaline phosphatases compared to the variant treated with sewage sludge. In the case of the variant treated long-term with sewage sludge, the portion of inorganic P to total soil P content proportionally increased compared to the manure-treated variant. Soil of the rape rhizosphere showed a trend of lower pH/H<sub>2</sub>O value of all variants, whereas the wheat rhizosphere showed an opposite pH tendency.

scholarly journals Composted Sewage Sludge Enhances Soybean Production and Agronomic Performance in Naturally Infertile Soils (Cerrado Region, Brazil)

Agronomy ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1677
Author(s):  
Adrielle Rodrigues Prates ◽  
Aline Renée Coscione ◽  
Marcelo Carvalho Minhoto Teixeira Filho ◽  
Bruno Gasparoti Miranda ◽  
Orivaldo Arf ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Polynomial Regression ◽  
Block Design ◽  
Crop Productivity ◽  
Organic Fertilizers ◽  
Mineral Fertilizers ◽  
Alternative Source ◽  
Soybean Yield ◽  
Infertile Soils ◽  
Composted Sewage Sludge

Naturally infertile soils require large amounts of mineral fertilizers to obtain the desired crop yield. In the Cerrado region of Brazil, there is a need to investigate the potential of organic fertilizers to sustainably increase crop productivity and food security. A field study was conducted over two experimental seasons to evaluate the agronomic effectiveness of composted sewage sludge (CSS) as a fertilizer for soybean cultivation in infertile tropical soils. A 4 × 2 + 2 factorial randomized complete block design was applied with the following treatments: (i) CSS: 5.0, 7.5, 10.0, and 12.5 Mg ha−1 on a wet basis applied according to two different methods: whole area (WA) or between rows (BR); (ii) comparison with two alternative treatments: a control with no CSS and mineral fertilizer application, and an area treated with conventional fertilizers only. All the treatments were compared in terms of micronutrient concentrations in surface soil and plant leaves, plant development, crop productivity, and yield. Bi- (ANOVA, correlation matrix, and polynomial regression analysis) and multivariate (PCA, principal factor analysis) statistics were applied to determine statistical differences and relationships/observed variability among the treatments. Results showed that at higher CSS-WA rates: (i) soil and leaf micronutrient concentrations increased; (ii) there was an increase in soybean yield by 12 and 20%, respectively, as compared to control and conventional fertilization; (iii) soybean yield was 67% higher than the mean soybean yields for Brazil. Research outcomes confirm the benefits of CSS application on infertile agricultural soils in the Cerrado region, representing a strong alternative source of micronutrients in the CSS with respect to conventional fertilizers.

Hygienic substantiation for the possibility to use of sewage sludge as an organic fertilizer

2020 ◽  
Vol 99 (3) ◽  
pp. 259-264
Author(s):  
А.К. K. Маненко ◽  
Галина Михайловна Ткаченко ◽  
О.П. P. Касиян ◽  
С.Т. T. Юрченко
Keyword(s):  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Agricultural Production ◽  
Chemical Elements ◽  
Organic Fertilizer ◽  
Atomic Absorption Spectrophotometry ◽  
Organic Fertilizers ◽  
Biogenic Elements ◽  
Plant Soil ◽  
Phytotoxic Effect

Introduction. Nowadays, in front of large cities, there is an acute problem for finding ways of environmentally safely dispose of accumulated sewage sludge and the possibility of its use. The most profitable way to utilize sewage sludge is to use them as organic fertilizers in agricultural production due to the high content of biogenic elements (nitrogen, phosphorus, potassium) and organic substances in their composition. However, the presence of heavy metals, pathogens, and other toxicants necessitates the study at the regional level the possibility of using these sediments as fertilizers. In each specific case, it is necessary to apply a scientific approach to the use of sewage sludge, since their composition is characterized by a qualitative and quantitative variation of chemical compounds. The purpose of the study was a hygienic justification for the possibility of using sludge for wastewater treatment from the municipal facilities in agricultural production as an organic fertilizer. Material and methods. The object of the study was sludge after treatment with flocculants and centrifugation and sludge stored on the sites of Lviv municipal facilities for 1, 6 and 18 months. In the experiment, the distribution of sludge components in the “plant-soil” dynamic system, as well as the degree of their accumulation in test plants, was determined. Quantitative determination of the of chemical elements content in samples of sludge and phytomass was carried out by atomic absorption spectrophotometry. Results. The effectiveness of the use of sludge from the municipal facilities for wastewater treatment in agricultural production as an organic fertilizer has been studied. It was found that the sludge dose of 50 tons/ha, using immediately after centrifuge, can not be used in the fields as a fertilizer. This dose caused a high phytotoxic effect on plants. The dose of used sludge (30 tons/ha after 1.5 years of maturing on silty areas) had a less pronounced phytotoxic effect, but the fact of fluorine, lead, cadmium, arsenic, mercury and manganese translocation from soil into the plants in high quantities was observed. This dose also cannot be used in the fields as a fertilizer. The use of a smaller dose should be justified by additional experiments.

Soil respiration and soil organic matter pools in soils amended for 7 years with biochar combined with mineral and organic fertilizers

2020 ◽  
Author(s):  
Iria Benavente-Ferraces ◽  
Fátima Esteban ◽  
Denis Courtier-Murias ◽  
Ana Rey ◽  
Claudio Zaccone ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Sewage Sludge ◽  
Soil Respiration ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Mineral Fertilizer ◽  
Organic Fertilizers ◽  
Mineral Fertilization ◽  
Municipal Solid Waste Compost

&lt;p&gt;Biochar application is now considered to be one of the most promising agricultural practices to mitigate climate change. However, to fully assess the benefits of biochar, we still need to better understand its effects on soil properties, and particularly on native soil organic matter (SOM) dynamics.&lt;/p&gt;&lt;p&gt;In this work, we investigated soil respiration and changes in SOM pools (mineral-free, intra-aggregate, and mineral-associated SOM) as affected by the application of 20 t / ha per year of biochar alone or combined with mineral fertilizer, municipal solid waste compost, or sewage sludge. The experiment was run for 7 years in a semiarid agricultural soil. We found that biochar had no effect on soil respiration with respect to mineral fertilization and no amendment (control), and tended to decrease CO&lt;sub&gt;2 &lt;/sub&gt;emissions from soils amended with municipal solid waste compost and sewage sludge. Biochar accumulated mainly in the mineral-free SOM fraction and its addition, especially in combination with municipal solid waste compost, promoted the amount of SOM occluded with aggregates and associated to mineral surfaces.&lt;/p&gt;&lt;p&gt;Acknowledgments: to the Spanish MICINN (MINECO, AEI, FEDER, EU) for supporting the research project AGL2016-75762-R.&lt;/p&gt;

scholarly journals Evaluating the Effects of Municipal Waste and Wastewater on Absorption of Nickel and Cadmium of Helianthus Annuus Plant

2016 ◽  
Vol 64 (3) ◽  
pp. 741-749
Author(s):  
Amirhossein Ashouri ◽  
Bahareh Sadhezari
Keyword(s):  
Sewage Sludge ◽  
Helianthus Annuus ◽  
Municipal Waste ◽  
Organic Fertilizers ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Control Group ◽  
Aquatic Environments ◽  
Municipal Waste Compost ◽  
Main Factor

The present study is an attempt to examine the effects of municipal waste and wastewater on absorption of nickel and cadmium of helianthus annuus plant. In order to determine cadmium and nickel in different organs of the plant in soil with organic fertilizers of municipal waste and municipal sewage sludge, we conducted a split plot study. The study was in form of randomized complete block from 2011 to 2015 under farm conditions. We considered the main factor in five levels of control, 10 and 20 tons of sewage sludge and municipal waste compost per hectare besides the minor factor of yearly treatment during four years. The results showed that using 20 tons of sewage sludge and waste per hectare increased absorbable soil nickel and cadmium up to approximately 220%. Also, the amount of cadmium and nickel in root was about 400% more than the control group. Bacteria found in soil contaminated to heavy metals showed remarkable resistance against higher concentration of these elements. Both bioaccumulation and biosorption techniques indicated high potential to refine aquatic environments. However, the bioaccumulation technique showed better efficiency in lower concentrations and the biosorption revealed better efficiency in higher concentrations of metals.

scholarly journals Agroecological assessment of saline soils of Iran

2021 ◽  
Vol 6 (48) ◽  
pp. 16-16
Author(s):  
Shima Mohammadi ◽  
Keyword(s):  
Granulometric Composition ◽  
Humus Content ◽  
Fertilizer Application ◽  
Soil Salinization ◽  
Organic Fertilizers ◽  
Mineral Fertilizers ◽  
Saline Soils ◽  
Soil Density ◽  
Electrical Sensing ◽  
Over Time

For the studied saline soils, the expediency of assessing the content of mobile ion compounds by chemical autography based on electrolysis and ionite membranes, vertical electrical sensing is shown. However, the electrical conductivity of soils depended on humidity, temperature, humus content, granulometric composition, soil density, and fertilizer application. The change in the nature and degree of soil salinization over time and in space was determined not only by the microrelief of the surface, groundwater and the change in the depth of the umbrellas in density, but also by the patterns of solubility of salts from humidity, temperature, pCO2, complex formation. For relative optimization of the situation, it is recommended to apply mineral fertilizers, stimulants, organic fertilizers, and create a large-porous layer at a depth of 40-70 cm, reducing the upward current from the lower layers of the soil to the Ap. Keywords: SOIL, SALINIZATION, WAYS OF OPTIMIZATION

Sign in / Sign up

Export Citation Format

Share Document