Quality Amelioration Research Articles

Tree Role in Environmental Quality Amelioration of the Sapienza University of Rome Campus

The capability of trees growing in the Campus of Sapienza University of Rome to improve environmental quality was analyzed. Measurements of CO2 concentration, air temperature and humidity, traffic density and noise level were carried out along a transect from streets outside the Campus to sites inside. Moreover, measurements were also carried out at the Experimental Garden placed inside the Campus. In each of the considered sites, diameter at breast height, plant height and carbon stored in the tree aboveground biomass were calculated. Air temperature in summer was 5% lower inside the Campus than in the surrounding streets, while relative humidity increased by 4%. CO2 concentration in winter was 11% lower inside than in the surrounding streets. Carbon stored by trees was 374 Mg to which Pinus pinea, Cedrus deodara, Quercus ilex and Tilia × europaea contributed by 30%, 20%, 18% and 13%, respectively. Moreover, noise level was 36% lower inside than in the surrounding streets.

Нові напрями в селекції зернових культур на якість зерна

The purpose. Cultivated cereal’s grain quality is a question number one in the civilized world. Methods. Field, laboratory methods, methods of protein electrophoresis, polymerase chain reaction (PCR), technological analysis of grain and flour, mesuring of grain antioxidant activity, chromatographic analysis. In researches have used the original methods of electrophoretic analysis and grain quality analysis, developed in the Department of genetic bases of breeding of Plant Breeding & Genetics Institute which now became standard analytical procedures. Results. One of the perspective way of wheat quality amelioration as well as other agronomic characters is the use of germplasm of wild relatives aegilopses Ae. tauschii (2n=2x=14) and Ae.cylindrica (2n=4x=28) the D genome donors as a key genome of cultivated wheat. Genetic manipulation with Wx (Wax) and SBEIIa genes makes possible an efficient regulation of the starch amylose/amylopectin ratio, to manage of the starch biochemistry and rheology of wheat, barley and triticale. The use of genetic factors regulating of the starch biochemical composition reveals the new directions in breeding of wheat, hull-less barley and triticale possessing with special of biochemical and technological grain characteristics as raw material for development of the new food products. Authors presented the breeding concept of the new common wheat technological class of the grouts end-use with promoted of the grain food value. Conclusion. The cereals grains is the main food source of unique dietary fibers, plant antioxidants and key minerals — three components that together form the basis of modern nutritiology and dietetics, the foundation of a healthy diet. Based on the results conducted research authors noted, that cereals food quality amelioration by manipulation with genes regulating of grain biochemistry should become a key point in the strategy of cereals quality amelioration as a base for development and production of the healthy (functional) food products for Ukrainian nation.

Quality assessment of porous CFRP specimens using X-ray Computed Tomography data and Artificial Neural Networks

Despite their extensive use and the quality amelioration, CFRPs remain susceptible to a variety of manufacturing defects such as the pores. Predictive tools capable of correlating the mechanical properties of CFRP parts with the characteristics of defects as derived from NDT techniques or with the manufacturing parameters could serve as an effective tool for the quality control of CFRP structural parts. The present work contributes towards the development of effective quality control tools for composite materials. Within this context, the characteristics of pores, as evaluated by X-ray Computed Tomography (CT), are correlated with the matrix-dominated mechanical properties of unidirectional porous CFRP specimens using an Artificial Neural Network (ANN). The ANN model has been trained by using a multi-scale numerical model. For the training of the ANN, 30 porosity scenarios have been created and given as input to the numerical model. The predictions of the ANN agree very well with results obtained from mechanical tests. Moving one step forward, a second ANN has been developed to correlate the autoclave pressure directly with the mechanical properties of the CFRP specimens. The validity of this ANN depends on the accuracy of the relation between the autoclave pressure and the characteristics of the pores.

Prediction of mechanical properties of porous CFRP specimens by ANNs and X-ray CT data

Carbon fiber reinforced plastics (CFRPs) have evolved into the primary material for several lightweight structures. However, despite their extensive use and the quality amelioration, CFRPs remain susceptible to a variety of manufacturing defects, the most common of which are the pores. Predictive tools capable of correlating the mechanical properties of CFRP parts with the characteristics of defects as derived from non-destructive testing (NDT) techniques or even further with the manufacturing parameters could serve as an effective tool for the quality control of CFRP structural parts. In the present paper, the characteristics of pores as evaluated by X-ray Computed Tomography (CT) have been correlated with the matrixdominated mechanical properties of unidirectional porous CFRP specimens using Artificial Neural Networks (ANN). Thirty (30) porosity scenarios have been created and given as input to the numerical model. That multi-scale numerical model, which had been validated experimentally, has been used for training the ANN model. The predictions of the ANN agree very well with results from mechanical tests. Moving one step forward, a second ANN has been developed to correlate the autoclave pressure directly with the mechanical properties of the CFRP specimens. The validity of the latter ANN depends on the accuracy of the relation between the autoclave pressure and the characteristics of the pores. The present work represents a step towards the development of effective quality control tools for composite materials.

Shift Quality Amelioration of EV with AMT by Speed Regulation

Due to torque interruption and clutch friction of Automated Manual Transmissions (AMT) during gear shift, the shift quality is not as positive as other kinds of transmissions, several ways to improve shift quality such as reduce shift time have been researched. During the gear shift process in AMT, new gear speed needs to be regulated as gear ratio changes. In this paper, the research topic is concerning gear shift process of an AMT of electric vehicles, the influence of the speed difference between new gear and synchronizer on gear shift time is studied. Powertrain model of the electric vehicles with AMT is built in ADAMS and several simulations are conducted. Simulation results demonstrate that by controlling the speed difference between new gear and synchronizer in a positive small range from 0rpm to +10rpm with the shift force at 200N, shifting synchronizer can be engaged in a short time. In addition, results also demonstrate that within small speed difference range, the existence of synchronizer ring has little effect on gear shift performance, which illustrates that the structure of AMT on electric vehicles can be simplified.

Innovative system for biochemical monitoring of degraded soils restoration

Inappropriate agricultural practices, combined with adverse environmental and climatic factors, make the soil particularly prone to intense degradation processes, especially in Mediterranean area.The present work was aimed at demonstrating the viability of the addition of stabilized organic matter and the plantation of autochthonous species as an environmental approach to recover and to protect the soil in areas with high risk of degradation processes.Two sites (about 360m2 each), located in two different pedoclimatic areas in Italy (North and South of Italy), have been set up for the experimentation. Each one was divided in four plots and assigned to a different treatment with the aim of evaluating the single and combined effect of plants (Pinus halepensis and Pistacia lentiscus) and organic amendment (compost) on soil quality improvement.Conventional chemical-physical parameters usually related to soil fertility along with more sensitive biochemical and biological indicators of soil quality and functionality have been used as innovative integrated characterization and monitoring methodology.The selected parameters clearly discriminated the two sites and a higher soil quality and functionality was generally observed in Northern with respect to Southern Italy sites. The results of soil characterization showed that microbial metabolism and carbon cycle were strictly interrelated each other and positively affected by the organic matter, immediately after addition (T0). Total C and humic substances content increased, over time, in both the amended soils (OM and OM+P) compared to the control soil without amendment, as well as dehydrogenase and hydrolytic enzymes (β-glucosidase and phosphatase) activities.Compost application was also effective in decreasing the biomarkers of plant oxidative stress. Indeed, SOD, APX and GPX enzyme activities in needles of Pinus halepensis and in leaves of Pistacia lentiscus were reduced in presence of compost.Similarly, after eighteen months from the beginning of the experimentation (T18), the plant remediation strategy has showed its effectiveness in soil quality amelioration in terms of total C, humic substances content and biochemical activities in the North of Italy site. In the South of Italy, the plant treatment without amendment, in spite of the fact that it stimulated the soil functionality, was not able to promote the C sequestration in soil.

Removal of PM10 by Forests as a Nature-Based Solution for Air Quality Improvement in the Metropolitan City of Rome

Nature-based solutions have been identified by the European Union as being critical for the enhancement of environmental qualities in cities, where urban and peri-urban forests play a key role in air quality amelioration through pollutant removal. A remote sensing and geographic information system (GIS) approach was applied to the Metropolitan City (MC) of Rome to assess the seasonal particulate matter (PM10) removal capacity of evergreen (broadleaves and conifers) and deciduous species. Moreover, a monetary evaluation of PM10 removal was performed on the basis of pollution externalities calculated for Europe. Deciduous broadleaves represent the most abundant tree functional group and also yielded the highest total annual PM10 deposition values (1769 Mg). By contrast, PM10 removal efficiency (Mg·ha−1) was 15%–22% higher in evergreen than in deciduous species. To assess the different removal capacity of the three functional groups in an area with homogeneous environmental conditions, a study case was performed in a peri-urban forest protected natural reserve (Castelporziano Presidential Estate). This study case highlighted the importance of deciduous species in summer and of evergreen communities as regards the annual PM10 removal balance. The monetary evaluation indicated that the overall PM10 removal value of the MC of Rome amounted to 161.78 million Euros. Our study lends further support to the crucial role played by nature-based solutions for human well-being in urban areas.

Power Quality Amelioration in Wind Energy Systems using Flexible Power Electronic Transformer based UPQC

This paper describes the operational features of a flexible power electronic transformer based UPQC in order to improve the power quality in wind energy conversion systems. Basically there are three stage proposed converter in design of a FPET. The main aim of this paper is to reduce the size of the transformer. In designing the basic structure of FPET two matrix converters are used. Several topologies are studied and matrix converter based PET is being implemented. The placement of conventional distribution transformers with Power Electronic Transformer (PET) reduces the size and makes this device compact. The Proposed system can compensate both active and reactive powers. This proposed topology is being explained and the validity of design is verified using the simulation and experimental results.

Miscanthus × giganteus as a biomass feedstock grown on municipal sewage sludge

Utilization of sewage sludge seems to be an attractive option for fertilization of bioenergy crops; therefore the objective of this study was to determine the effect of different doses of municipal sewage sludge on yields and bioenergy feedstock characteristics of Miscanthus×giganteus (Greef et Deu.). In a six-year field experiment, located on loamy clay, five doses of sludge (0, 10, 20, 40, 60MgDMha−1), two methods of plantation establishment (by rhizome divisions and micropropagation), and three dates of biomass harvesting (autumn, winter, spring) were tested in order to determine which one should be recommended in cultivation of this species.Dry matter yields of giant miscanthus increased each year and exceeded 25Mgha−1 in an optimized system within this study. It was found out that application of lower doses of sludge (10–20MgDMha−1), resulted in obtaining the highest yield of biomass. On the other hand, the content, uptake and bioaccumulation factor of macronutrients contained in the sludge increased along with increasing dose of applied biosolids. M. giganteus biomass was characterized by favorable parameters: net and gross calorific values were in the range of 16.2–16.8MJkg−1 and 17.7–18.2MJkg−1, respectively. The highest energy value of biomass yield was obtained in the case of rhizomes used for plantation establishment, especially in the treatments with 20MgDMha−1 of sludge application. Spring harvest improved quality of biomass for thermochemical conversion, but at the same time significantly (by 22%) reduced yields, whereas winter harvest resulted in biomass loss without its quality amelioration compared to the autumn one.

Improvement of output current waveforms using SVM technique and fuzzy logic controller for matrix converter

Purpose – The use of power electronic equipment such as conventional AC-DC-AC converters cause several problems in electrical networks and its components. They generate harmonic currents and disturb the electrical power sources; so, it is necessary to research alternative topologies of power electronic converters based on advanced intelligent controllers, which reduce or even eliminate harmonics to achieve energy-saving and environmental protection. The use of matrix converter (MC) is, considered as an attractive solution to maintain pure sinusoidal input and output current waveforms. The paper aims to discuss this issue. Design/methodology/approach – The studied system is composed of a three phase matrix converter (TMC) feeding a linear R, L load and a trees phase rectifier considered as a non-linear load; the proposed control strategy is based on a fuzzy logic controller (FLC) associated to the (space vector modulation) SVM modulation technique, this choice is motivated by the advantages that represent the combination of FLC and SVM in term of power quality enhancement in both input and output sides of MC. Findings – The model is validated based on simulation results that illustrate the effectiveness of the proposed system in term of power quality amelioration. The high performance of the proposed FLC is illustrated in all study cases especially in the case of perturbed input voltage, it is not only able to keep the whole system stable, but also it reduces harmonic distortion THD to respect international standards recommendation. Originality/value – In this paper, an associated linear (RL), non-linear loads and TMC is studied. From the mathematical point of view, the MC is modeled and analyzed. From the technique point of view, the MC allows sinusoidal current absorbance from the network with good qualities in term of harmonic distortion compensation, and high reliability under various loads and disturbed input voltage.

Water quality deterioration as a driver for river restoration: a review of case studies from Asia, Europe and North America

River restoration projects are carried out actively in several countries as an alternative flood protection measure, and also to improve/restore water quality and habitat diversity. The implication of various river restoration measures on water quality is seldom studied. In this review, case studies of restoration projects that aimed at water quality improvement were selected from four industrialized countries in three continents. The water quality concerns and the systematic development of legislative policies towards better water quality management in the different countries considered were assessed. The best management practices for river restoration with respect to water quality amelioration were evaluated with the perspective of the case studies selected. In the various case studies discussed, a combination of different restoration measures were implemented in tandem. The restoration measures were adapted to suit the local conditions and problems. A pre- and post-restoration investigation of the main success indicators was found to be an important criterion for the evaluation of the outcome of restoration projects. Successful restoration projects were found to focus on reduction of pollutant/nutrient input to the rivers, in addition to the implementation of suitable restoration measures. This has been achieved by public infrastructure development (like installation of storm water controls and sewage treatment plants). This review is aimed to act as an inventory for future restoration projects with water quality amelioration as their main target.

Assessing water-quality data: The relationship between the water quality amelioration of Lake Balaton and the construction of its mitigation wetland

Lakes are sensitive to environmental changes and anthropogenic effects; and Lake Balaton, the largest shallow freshwater lake in Central Europe, is no exception. To protect the lake (primarily Keszthely Bay) against elevated nutrient loads, the Kis–Balaton Water Protection System (KBWPS) was constructed as a mitigation wetland at the mouth of the River Zala, the largest tributary of the lake. This research demonstrates the effect of the KBWPS on Keszthely Bay's oligotrophication processes. The concentration values of KBWPS and Keszthely Bay's measured parameters and their stochastic relations were analyzed by applying cluster- discriminant analysis, Wilks' lambda statistics, confirmatory principal component- (PCA), and input–output analyses to 19 parameters from 14 monitoring stations. First, the sampling sites were clustered for each year, showing that when the runoff in the system was low, Keszthely Bay behaved as a separate entity, while in the years with high runoff it rather displayed a similarity to the wetland area of the KBWPS. Secondly, PCA showed that, from the perspective of stochastic relations, changes in the background processes of Keszthely Bay were observed only after the settling of the KBWPS; and that the runoff in the examined years did not have any significant influence on it. Furthermore, the eutrophication processes moved upstream from Keszthely Bay to the hypertrophic area of KBWPS. This study confirms that the effects of the KBWPS – together with other load reduction measures – had a beneficial effect on the oligotrophication of Lake Balaton.

Enhanced removal of organic matter and nitrogen in a vertical-flow constructed wetland with Eisenia foetida

Constructed wetlands (CWs) have been widely applied for water quality amelioration. However, soil macrofauna usually considered as ecosystem engineers are scarce in wetlands. We hypothesize that introduction of an epigeic earthworm Eisenia foetida, a common ecosystem engineer, into wetlands would improve removal of organics and nitrogen in vertical-flow CWs. This paper quantitatively analyzed the effects of addition of E. foetida on removal of organic matter and nitrogen in vertical-flow wetlands. Results demonstrated that average removal efficiencies of COD, NH4+–N, and TN in the earthworm-amended wetlands were 15.7, 21.3, and 20.6%, higher than those observed in control wetlands with no addition of E. foetida, respectively. Moreover, the improvement was mainly achieved in the upper layer (0–20 cm) matrix, where E. foetida inhabited. Meanwhile, the total bacterial count, the numbers of ammonifier, ammonia-oxidizing bacteria and nitrite-oxidizing bacteria, as well as urease and protease activities in the upper layer of the earthworm-amended wetlands were higher than those in control wetlands. Therefore, it is suggested that E. foetida improved the removal of nitrogen and organics by stimulating the proliferation of bacteria and enzyme activities.

Algal turf scrubber (ATS) floways on the Great Wicomico River, Chesapeake Bay: productivity, algal community structure, substrate and chemistry(1).

Two Algal Turf Scrubber (ATS) units were deployed on the Great Wicomico River (GWR) for 22months to examine the role of substrate in increasing algal productivity and nutrient removal. The yearly mean productivity of flat ATS screens was 15.4 g · m(-2) ·d(-1) . This was elevated to 39.6g·m(-2) ·d(-1) with a three-dimensional (3-D) screen, and to 47.7g·m(-2) ·d(-1) by avoiding high summer harvest temperatures. These methods enhanced nutrient removal (N, P) in algal biomass by 3.5 times. Eighty-six algal taxa (Ochrophyta [diatoms], Chlorophyta [green algae], and Cyan-obacteria [blue-green algae]) self-seeded from the GWR and demonstrated yearly cycling. Silica (SiO2 ) content of the algal biomass ranged from 30% to 50% of total biomass; phosphorus, nitrogen, and carbon content of the total algal biomass ranged from 0.15% to 0.21%, 2.13% to 2.89%, and 20.0% to 25.7%, respectively. Carbohydrate content (at 10%-25% of AFDM) was dominated by glucose. Lipids (fatty acid methyl ester; FAMEs) ranged widely from 0.5% to 9% AFDM, with Omega-3 fatty acids a consistent component. Mathematical modeling of algal produ-ctivity as a function of temperature, light, and substrate showed a proportionality of 4:3:3, resp-ectively. Under landscape ATS operation, substrate manipulation provides a considerable opportunity to increase ATS productivity, water quality amelioration, and biomass coproduction for fertilizers, fermentation energy, and omega-3 products. Based on the 3-D prod-uctivity and algal chemical composition demonstrated, ATS systems used for nonpoint source water treat-ment can produce ethanol (butanol) at 5.8× per unit area of corn, and biodiesel at 12.0× per unit area of soy beans (agricultural production US).

Effects of bubbling operations on a thermally stratified reservoir: implications for water quality amelioration

Artificial thermal mixing of the water column is a common method of addressing water quality problems with the most popular method of destratification being the bubble curtain. The air or oxygen distribution along submerged multiport diffusers is based on similar basic principles as those of outfall disposal systems. Moreover, the disposal of sequestered greenhouse gases into the ocean, as recently proposed by several researchers to mitigate the global warming problem, requires analogous design criteria. In this paper, the influence of a bubble-plume is evaluated using full-scale temperature and water quality data collected in San Roque Reservoir, Argentina. A composite system consisting of seven separated diffusers connected to four 500 kPa compressors was installed at this reservoir by the end of 2008. The original purpose of this air bubble system was to reduce the stratification, so that the water body may completely mix under natural phenomena and remain well oxygenated throughout the year. By using a combination of the field measurements and modelling, this work demonstrates that thermal mixing by means of compressed air may improve water quality; however, if improperly sized or operated, such mixing can also cause deterioration. Any disruption in aeration during the destratification process, for example, may result in a reduction of oxygen levels due to the higher hypolimnetic temperatures. Further, the use of artificial destratification appears to have insignificant influence on reducing evaporation rates in relatively shallow impoundments such as San Roque reservoir.

Soil organic‐C accumulation and N availability under improved pastures established in Mediterranean oak woodlands

AbstractLong‐term effects of improved pasture establishment (with high proportion of legumes) on soil organic‐C status and N availability in Mediterranean cork oak (Quercus suberL.) woodlands were assessed. Soils were sampled beneath scattered crowns and in open areas, considering two systems: unmanaged and managed woodlands where improved pastures were installed 26 and 32 years ago. Total and labile C and N pools were measured and C and N mineralization were determined over 24 weeks laboratory incubation. Soils under improved pastures showed higher organic‐C, total‐N and net N mineralization than those under unmanaged pasture, mainly when established beneath trees. Potentially mineralizable C, C mineralization rate and microbial C were not statistically different between the unmanaged and improved pasture sites, but were higher closer to the tree than in the open area (1.8, 1.2 and 1.2 times, respectively). TheqCO2was higher in improved pastures (1.7 times). Labile pool of C and N extracted with hot water increased under improved pasture (3.4 and 1.7 times, respectively). Results indicate that soil quality amelioration by improved pastures is stronger in the presence of oak trees. Management systems that favour oak tree maintenance and regeneration should be taken into account to reverse soil degradation.

Denitrification rates and community structure of denitrifying bacteria in newly constructed wetland

Constructed wetlands are generally created for water quality amelioration using natural biogeochemical processes including denitrification. To have maximal denitrification rates in constructed wetlands, both optimal environmental conditions and activation of denitrifiers are required. In this study, we monitored temporal dynamics of the community structure of denitrifying bacteria by terminal restriction fragment length polymorphism (T-RFLP) in newly constructed wetlands over 2 growing seasons. We also measured denitrification rates and denitrifying enzyme activity (DEA) using an acetylene blocking method. Community structure of denitrifying bacteria differed between 2 years, and dominant T-RFs changed over the period. In addition, the composition of denitrifying bacteria became simplified in the second year. Along with changes in community structure of denitrifying bacteria, DEA increased substantially in the second year compared with that in the first year. This result suggests that several dominant and active denitrifiers may induce higher potential for denitrification as wetlands became stabilized. However, actual denitrification rates did not exhibit an annual difference, but were more strongly influenced by environmental conditions such as temperature, pH, and DOC concentrations. Overall results of this study indicate that active denitrifiers may dominate and denitrification potentials increase as a newly constructed wetland becomes stabilized, but actual denitrification rates are mainly constrained by environmental conditions such as temperature, pH and carbon availability.

Urban green-cover and the environmental performance of Chennai city

Chennai city the capital of Tamil Nadu is located in southeastern India. Its average population growth rate is 25% per decade, which recurrently alters the city’s land-cover particularly the receding green-cover distressed the city’s self-renewal capacity, in terms of groundwater recharge, pollution sequestration and microclimatic amelioration. This has been appraised by means of a GIS model. This model was developed using three sets of green-cover associated parameters, namely air quality amelioration, hydrological process regulation and microclimatic amelioration. The outcome confirms the difference in the city’s environmental performance between the 1997 and 2001. At some parts of the city, due to the green-cover change, the extent of modification was 38%, in terms of mean percent change in all three sets of parameters mentioned earlier. Through coefficient of correlation (r) method, relationship between green-cover change and environmental performance change are checked. It confirms positive relationship (r = 1) in all parts, except at few places.

Modelling multi-species algal bloom in a lake and inter-algal competitions

A numerical model was developed to simulate water quality and algal species composition in a deep lake. As artificial destratification is widely used in the lakes, a destratification (bubble plume) model was incorporated with the ecological model to simulate the dynamic responses of different species under artificial mixing. The ecological model predicts concentrations of PO(4)-P, NH(4)-N, NO(3)-N, DO and pH throughout the water column, all of which have a significant influence on the growth of different algal species. The model has been calibrated using data from Uokiri Lake (Japan) for two different species (Diatom and Cyanobacteria) with and without artificial mixing. The calibrated model was used to simulate different conditions of artificial mixing within the lake over a period of five months. The simulation results show that artificial mixing favors non-motile heavier species, such as Diatom, while preventing the growth of Blue-green algae. It is also demonstrated that intermittent operation of the artificial mixing is better for water quality amelioration than continuous operation.

RESEARCHES CONCERNING THE STEROIDAL GLYCOSIDE USE WHEN CULTIVATING ROOTSTOCK OF VINE

SUMMARY The vine culture foresees the use of rootstock of whose quality depend the vine plantations productivity and longevity. One of the agrotechnical measures that can considerably influence the rootstock vine growth and productivity, cord quality amelioration, regeneration activity, calluse genesis and concrescence of grafting components is the administration of steroidal glycosides. The investigations made were directed to elucidate the steroidal glycosides Moldstim and Ecostim over the rootstock vine growth of Riparia x Rupestris 101-14 variety and to use the optimal application concentration that contribute to the increase of their productivity. It was studied the action of Moldstim and Ecostim steroidal glycosides in the following doses: 10, 25, 50 and 100 mg/l. The plants’ sprinkling was made when they were at the beginning of the phonological phase – intensive growth, when the shoots reached the length of 60-75cm only once. The plants of the variant control were watered. As a result of the investigations made, it came out that the plant’s reaction on the action of both the steroidal glycosides applied was similar, with non-significant derivations and is manifested by activating the shoot vigor of growth at the beginning and middle period of vegetation, depending also on the type of preparation, its dose of administration, the average length of shoots at the end of the period of vegetation had increased with 8,02…10,27 % (Moldstim) and 5,91…13,97 % (Ecostim) in comparison with the control variant, it was established an increase of the maturation of cords used for grafting, of the plants productivity – 12,3 % (Moldstim) and 19,2 % (Ecosatim). The optimal concentration of the solution for sprinkling the plants for both the preparations it varies between 10 and 25 mg/l. when increasing the dose of administration of the studied glycosides, it is emphasized a diminution of their action efficiency.