Krunoslav Karalić

Liming and fertilization impact on nutrient status in acid soil

Maize (Zea mays L.) genotypes wit It improved nitrogen utilization efficiency (NUE) are of interest to growers. Field experiments were conducted to evaluate the total N uptake in the aboveground biomass and NUE (kg grain per kg of N absorbed in the aboveground biomass). Four commercial hybrids of similar maturity ranking were grown under the high-N (200 kg N ha(-1)) and low-N (1100 kg N ha(-1)) fertilization rates over three years. Growing conditions significantly affected hybrid performance for NUE, which ranged from 42 kg grain kg N-1 in the low-yielding (dry) environment to 55 kg grain kg N-1 under higher yielding environment, When compared to the low-N rate, the average N uptake was by 32% higher at the high-N rate, whereas smaller differences occurred for the aboveground biomass (12%), grain yields (14%), stover N (28%) and grain N (13%) concentrations. Significant differences existed among tested hybrids for grain yield, aboveground biomass, grain and stover N concentration, N uptake and consequently NUE.Hairy vetch (Vicia villosa Roth) and crimson clover (Trifolium incarnatum L.) were evaluated as cover crops during two vegetation seasons in the Mediterranean and Continental area of Croatia. Better tolerance to low winter temperatures was observed for crimson clover. Higher plants (10 to 3 1 cm) before winter and in spring (67 to 117 cm) were measured for hairy vetch, while crimson clover had higher yields of fresh biomass (33.7 to 113.1 t ha(-1)). Concentrations of N (1.53 to 3.34%), P2O5 (0.55 to 1.04%) and K2O (2.02 to 5.32%) in plant tissue were higher for hairy vetch. However, due to higher yields of dry matter, crimson clover accumulated more N (105 to 239 kg ha(-1)), P2O5 (28 to 83 kg ha(-1)), and K2O (105 to 440 kg ha(-1)) than hairy vetch. According to our results crimson clover could be recommended as a cover crop in Mediterranean and Continental area of Croatia.

Mineral fertilization and liming impact on maize and wheat yield

The soil analyses for the field trials started in the spring of 2003 at site Donji Miholjac in eastern Croatia. Two different soil types were chosen with distance less then 1 km: silty loam dystric luvisol and silty loam calcaric regosol (limey substrate was excavated for the melioration canals and redeposited as top soil layer in 1986). The dystric luvisol was very acid (pHKCl 4, 02) with 1, 66 % humus, 149 mg kg-1 P2O5 and 167 mg kg-1 K2O. The calcaric regosol was slightly alkaline (pHKCl 7, 14) with lower content of humus (1, 42 %), phosphorus (139 mg kg-1) and potassium (109 mg kg-1). In the spring of 2003 the dystric luvisol was limed with 0, 10 or 20 t ha-1 carbocalk (total Ca content 344 g kg-1 and P 4, 6 g kg-1) on soil depth 30 cm. In the autumn of 2003 and 2004 the both soils (dystric luvisol and calcaric regosol) were fertilized first for maize and in second year for wheat with three different nutrient amounts: no fertilization, standard mineral fertilization and doubled phosphorus fertilization. Dystric luvisol pH reaction was influenced by liming and fertilization and changes are measured one year after liming (before maize sawing) and two year after liming (after wheat harvest): 10 t ha-1 carbocalk raised pH value for approximately 1 pH unit and 20 t ha-1 for 2 pH units. Influence of mineral fertilization on soil pH is evident especially on liming treatment with 20 t ha-1 carbocalk. Liming without fertilization resulted in increased pHKCl from 4.02 to 6.33 and 6.22 after first and second year, respectively. At the same time, liming with standard fertilization raised pHKCl up to 5.83 and 5.98, and with doubled phosphorus fertilization reached pHKCl was 5.72 after first year and 5.81 after second year. Liming did not affect maize yield but did slightly increased wheat grain yield and phosphorus removal by wheat grain. Mineral fertilization influenced significantly on yield and phosphorus and calcium removal comparing to production without fertilization. Although doubled phosphorus fertilization increased wheat yield and nutrient removal, only significant increasing comparing to lower phosphorus fertilization was phosphorus removal by wheat straw. Wheat and maize grains removed much more phosphorus and less calcium than straws.

Total and plant available micronutrients in acidic and calcareous soils in Croatia

Maize (Zea mays L.) genotypes wit It improved nitrogen utilization efficiency (NUE) are of interest to growers. Field experiments were conducted to evaluate the total N uptake in the aboveground biomass and NUE (kg grain per kg of N absorbed in the aboveground biomass). Four commercial hybrids of similar maturity ranking were grown under the high-N (200 kg N ha(-1)) and low-N (1100 kg N ha(-1)) fertilization rates over three years. Growing conditions significantly affected hybrid performance for NUE, which ranged from 42 kg grain kg N-1 in the low-yielding (dry) environment to 55 kg grain kg N-1 under higher yielding environment, When compared to the low-N rate, the average N uptake was by 32% higher at the high-N rate, whereas smaller differences occurred for the aboveground biomass (12%), grain yields (14%), stover N (28%) and grain N (13%) concentrations. Significant differences existed among tested hybrids for grain yield, aboveground biomass, grain and stover N concentration, N uptake and consequently NUE.Hairy vetch (Vicia villosa Roth) and crimson clover (Trifolium incarnatum L.) were evaluated as cover crops during two vegetation seasons in the Mediterranean and Continental area of Croatia. Better tolerance to low winter temperatures was observed for crimson clover. Higher plants (10 to 3 1 cm) before winter and in spring (67 to 117 cm) were measured for hairy vetch, while crimson clover had higher yields of fresh biomass (33.7 to 113.1 t ha(-1)). Concentrations of N (1.53 to 3.34%), P2O5 (0.55 to 1.04%) and K2O (2.02 to 5.32%) in plant tissue were higher for hairy vetch. However, due to higher yields of dry matter, crimson clover accumulated more N (105 to 239 kg ha(-1)), P2O5 (28 to 83 kg ha(-1)), and K2O (105 to 440 kg ha(-1)) than hairy vetch. According to our results crimson clover could be recommended as a cover crop in Mediterranean and Continental area of Croatia.

Reduced Dietary Selenium Impairs Vascular Function by Increasing Oxidative Stress in Sprague-Dawley Rat Aortas

This study aimed to determine whether low dietary Se content affects the function and mechanisms mediating the vascular relaxation of rat aortas, and to test the role of oxidative stress in observed differences. Male Sprague Dawley (SD) rats were maintained for 10 weeks on low Se (low-Se group; N = 20) or normal Se content (norm-Se group; N = 20) rat chow. Dose responses to acetylcholine (ACh; 10−9–10−5M) and the response to reduced pO2 were tested in noradrenaline-precontracted aortic rings in the absence/presence of the nitric oxide synthase (NOS) inhibitor nitro-l-arginine methyl ester (l-NAME), the cyclooxygenase 1 and 2 (COX-1, 2) inhibitor Indomethacin, and the antioxidative agent Tempol in tissue bath. mRNA expression of glutathione peroxidase 1 (GPx1), catalase (CAT), and Cu/Zn superoxide dismutase (SOD) was measured in rat aortas. Oxidative stress (Thiobarbituric Acid Reactive Substances; TBARS), antioxidative plasma capacity (ferric reducing ability of plasma assay; FRAP), and protein levels of GPx1 were measured in plasma and serum samples, respectively. Reduced ACh-induced relaxation (AChIR) (dominantly mediated by NO) in the low-Se group compared to the norm-Se group was restored by Tempol administration. Hypoxia-induced relaxation (HIR) (dominantly mediated by COX-1, 2), TBARS, and FRAP as well as GPx1 serum concentrations were similar between the groups. mRNA GPx1 expression in rat aortas was significantly decreased in the low-Se compared to the norm-Se group. These data suggest that low dietary Se content increases the local oxidative stress level, which subsequently affects the NO-mediated vascular response.

Phosphorus fertilization and liming impact on soil properties

Liming caused a significant changes in soil properties modifying soil acidity, nutrients and heavy metal availability. The paper is based on four-year filed trials conducted on two sites near Donji Miholjac in eastern Croatia: dystric luvisol and calcaric regosol. Conducted experiments confirmed that the lowest yield of all four crops was achieved on calcaric regosol. Liming dystric luvisol with 10 and 20 t ha-1 of carbocalk resulted in yield increasing. The highest influence of liming with 20 t ha-1 was on wheat yield increase, than on soybean and the lowest impact was on cabbage and maize yields. Ammonium-lactate soil P test and plant P removal data are sufficient for soil P balancing at low levels or no applied P fertilizer, but more fertilizer indicates that correction factor should be used for calculation impact of applied P fertilizer on increasing soil AL extractable P.

Comparison of Two Soil Phosphorus Analytical Methods in Croatia

Abstract The purpose of this article was to compare soil phosphorus (P) extraction by sodium bicarbonate solution (Olsen P) and by ammonium lactate (AL P) and to create a model for prediction of Olsen P using ordinary soil‐fertility control data. The soils data used in this study included Olsen P, pHKCl, pHH2O, organic matter, AL P, and AL K. Soil pHKCl ranged from 3.5 to 8, organic matter up to 5%, AL K up to 400 mg kg−1, and AL P up to 200 mg kg−1. Olsen P and AL P were significantly correlated, and the difference between them was influenced by soil pH. Regression models included all soil data grouped by soil pH range, which significantly decreased the difference between predicted and measured Olsen P. The validation of the model was conducted on new data sets from field fertilization trials. The results show that Olsen P can be related to AL P and used for fertilizer recommendations instead of AL P.

Mineral composition of alfalfa ( Medicago sativa L. ) as influenced by liming and manure application

The objecive of this research was to assess the mineral composition of alfalfa grown on a pseudogley soil limed with carbocalc (byproduct of sugar factory, containing 70.5% CaCO3) and/or enriched with organic matter by cattle manure application. Nitrogen, phosphorus, potassium, magnesium, calcium, iron, manganese, zink and copper concentration were analysed in two cuts of alfalfa, grown on acid soil for three consecutive years (2002-2004).It was concluded that liming and manure application had highly significant influence on mineral composition of alfalfa, preventing possible toxic concentrations of heavy metals. Such soil amendments enable growth of this important crop on less favorable, acid soil through soil pH adjustment and regulation of plant nutrient availability, whereas plant mineral composition can differ significantly seasonally.

Four‐Year Dynamic of Potassium on Two Sites Interpreted by Different Soil Tests

Three soil–potassium (K) tests were compared using soil and plant samples collected during fertilization and liming experiments in Croatia on very acid dystric luvisol and slightly alkaline calcaric regosol. Soil samples were analyzed for pHKCl, pHH2O, organic matter, and ammonium lactate (AL, pH 3.75)–extracted phosphorus (P) and K. In addition, K was extracted with ammonium acetate (AA, pH 7) and with ammonium acetate ethylenediaminetetraacetic acid (AAEDTA, pH 4.6). In spring 2003, the dystric luvisol was limed with 0, 10, or 20 t ha‐1 carbocalk (by‐product at sugar beet processing, effective neutralizing value 69.1%). During the next four seasons, four different crops were grown without fertilization, with standard fertilization, and with doubled P amounts. All three soil K tests showed highly significant correlations of fertilization impact on extractable soil K and can be efficiently used for fertilizer recommendations. Balance calculation is closer to results of extractable K on fertilized plots than on control plots and use of AAEDTA or AL than AA extraction.

SIMPLE REGRESSION MODELS FOR PREDICTING SOIL HYDROLYTIC ACIDITY

The study determined the frequency of practice of the health care waste management practices on segregation, minimization, collection, storage, transport, disposal and treatment in the hospitals in Tabuk City. The study utilized a descriptive cross-sectional design. Interviews and ocular surveys/on-site observation, and the interviewer-administered questionnaire were utilized to gather data from the head nurse, waste handler during collection, waste handler during transport and waste manager. Data collected were treated using a five point Likert scale, and quantified using the frequency count, ranking, percentage and the Weighted Mean. The revealed that the health care wastes management practices are sometimes implemented in the hospitals in Tabuk City; segregation of wastes was generally often practiced, however, the use of plastic bags/plastic-lined cardboard boxes/leak-proof as containers of infectious and pathological wastes was seldom practiced. Waste minimization was often practiced, but composting was seldom practiced. Waste collection was sometimes practiced, but the collection of general wastes every shift and collection of biohazard wastes every shift was seldom practiced by the respondents. Waste storage and waste transport were sometimes practiced by the hospitals; but labeling properly all bags/containers with basic information of content, written or attached on the bag, and using transport vehicles exclusively for HCW were never practiced. Waste disposal was sometimes practiced, but offsite disposal exclusively for HCW was never practiced. Waste treatment was seldom practiced. Treating HCW before disposal, onsite treatment and using chemical disinfection as a type of treatment were seldom practiced while categorizing HCW when treating and treating wastewater prior to discharge off-site” were never practiced. From the conclusive results, the following recommendations were formulated: There is a need for the DOH to monitor regularly the management of health care wastes in each hospital 1. For waste segregation, in the use of labels and color coding scheme, all body fluids and excreta should be disposed in the infectious category. 2. Waste minimization through source reduction and recycling not only of plastics but also other recyclable materials such as papers 3. Strengthen the practice of composting 4. Due to the lack of appropriate storage area, collection and transport of biohazard waste should be done daily. 5. The city government should propose a separate disposal site for all healthcare wastes and set limit to public access to decrease the risk of infectious diseases 6. Burial pits should be lined with material of low permeability, such as clay, to prevent groundwater contamination. However, burial pits are recommended if they are located within the premises of the establishment. Encapsulation is the best method for disposal of sharps and should be practiced. 7. Waste treatment should be done to all infectious wastes. 8. The KASC Midwifery Department can initiate and conduct education and information campaign (IEC) for the hospital personnel, patients and guests at least once a yearMICROMEGAS (MICROMEsh GAs Structure) detector which is among the major families of position detectors in High Energy Physics, introduced in the late sixties, detects and localizes energy deposit by charged particles over large areas, is widely used in particle physics. This detector is in a sealed in which mixture gas circulates. This mixture usually based, on a noble gas and a few proportions a “quencher”. In this paper, we use 55Fe source that produces X-ray photons of 5.9 keV and a mixture gas on Argon (Ar) with quencher as isobutane (iC4H10) and dimethyl-Ether. We will present the results of the MATLAB simulations of MICROMEGAS performance taking into account all the processes from the primary ionization, the distribution of charges in the electrodes and the electron avalanche amplification (first Townsend coefficient and amplification gain). All the simulated results obtained indicate that the performances of the detector depend on many parameters. The simulation results are nearly consistent with the data that are published in other references, and provide important information in the MICROMEGAS design, making and operating. Our simulation predicts that further improvements are still possible for give a best spatial and temporal resolution for a MICROMEGAS detector.At the beginning the article focuses on general thematic considerations und explains why the implementation of approaches towards innovation management of public administrations into the private sector can be regarded as a reasonable aim. Furthermore, the underlying basic hypotheses are being established. Afterwards, the individual steps of a generally applicable implementation model will be described in detail and additional considerations on implementations and instructions on the course of action will be provided. At the end of each process that has been realized this way, a structured evaluation of the implemented methods and actions will be conducted. On the basis of a specific instruction on the course of action the article describes a generally usable model with the necessary work stages, instruments and required accompanying measures.The aim of this paper is to give a general view of the history of “Llaiko Vima” newspaper of the Ethnic Greek Minority in Albania from the year 1945-2012 in which will be mentioned the general characteristics of “Llaiko Vima” newspaper and mainly its purpose, its publishing team, its circulation, its personality and its ideology, the ideological action frame of its correspodents, its economics and circulation.Insurance, which was created in the early centuries, is of great interest even today. As a result, private insurance had to be distinguished. A great part of society is interested in protecting property. The basic of insurance must be juridical connection of subjects and people that was called insurance title. In the conditions of modern life, it is necessary for a person to be insured.Egypt has witnessed several waves of Armenian immigration through history particularly during the Ottoman era in Egypt and Arab world from the sixteenth century until the nineteenth century. After years of settlement and immigration, the Armenian minority became part and parcel of the multi-ethic/multi-cultural Egyptian society. Due to their commitment and dedication, the Armenians gained a reputation as experts in the fields of business and commerce244. This paper investigates the effect of this immigration on Egypt in the 19th century and the participation of the Armenian people in Mohamed Aly’s civilizational project which put Egypt on the map of the modern world. The paper will explore the significant role, played by Boghos Yosefyan, the central political and economic advisor of Mohamed Ali, in the development of the Egypt Renaissance. Based on the mutual correspondences (and letters) between the two parties (Mohamed Ali and Boghos) in addition to other historical documents, pursued in the Egyptian historical Archive, this study traces the nature of the role played by Boghoss Yosefyan in the construction of the Egyptian Renaissance during the first half of the nineteenth- century.The article considers the problems of conducting women nature research. The author offers to study women social behavior by reading fiction by Kazakh women writers. The author of the paper supposes that by analyzing Kazakh authors’ literature it is possible to find out problems that Kazakh women faced in the families, society, business, etc.Ten years have passed since the resources of the second tier- Mandatory State Funded Pension Scheme- have been transferred to the private fund managers. The second tier has started to pay accumulated capitals to the participants of pension schemes in 2013; therefore the aim of this paper is to assess the contribution of the private fund managers to the accumulation of the above-mentioned capitals.The amount of money accumulated on the second tier account depends on the amount of shares and their value. The last factor is the most considerable and it depends on the performance of investments made by the private fund manager. Profitability is one of the main indices for assessing the gain derived from the participation in the Mandatory State Funded Pension Scheme. For the analysis of profitability 26 pension plans have been divided into different groups. Then the authors have analyzed the following indices: profitability of 26 pension plans in different years and during the whole existence period; profitability depending on the declared risk of pension plan, its assets value and operation duration; deviation of profitability for all plans and for different groups of plans with similar declared risks, assets value and operation duration.The conclusions about the distinctions between the profitability of plans with different risks, assets and existence duration have been drawn. On the basis of conclusions the authors have estimated the contribution of the private fund managers to the accumulation of pension capital in the second tier of Latvian pension system.In the concluding remarks of the paper the authors have made proposals for increasing the contribution of private fund managers to the accumulation of capital in the Mandatory State Funded Pension Scheme.The subject of a surrogate motherhood in Georgia is no longer banned in Georgia at present. There are a lot of discussions currently occurring in the society. Moreover, medical technologies have gone even further and become more efficient in this respect. Therefore, these programs have become more popular all over country. People, who formerly tried to adopt children, now think of acquiring children through this particular method, which they would be genetically bound to.The article is devoted to the political and legal aspects of international cooperation against spectator violence and misbehavior at sports. The measures taken by the states and international intergovernmental and non-governmental organizations to maintain public order to prevent the acts of violence and misbehavior at sports is reviewed, as well as cooperation coordination problem on these issues at the national (the level of ministries, governmental agencies and sports organizations) and international levelsDefining demand at a national level is problematic in terms of the total volume of the structure, as to the performance of transnational corporations. Reviving of unemployment can not only be assessed at the national level, but an important aspect affecting national labor market is the revival of global economy which leads to the growth of the global labor needs. Currently, the focus of new jobs is shifting from partial professions towards cross-cutting and systemic professions, which must give a comprehensive response to developments in a particular industry. Slovakia is a small market economy significantly tied to major European economies, dominated by linkage to the German economy. Due to the high openness of the economy, the crisis has significantly affected the rate of growth of countrys performance and caused a drop in demand, a decrease in both production and unemployment. High unemployment in this period was related to revenue shortfalls in the state budget and deepening of the budget deficit.The compiling of Greek - Albanian and Albanian - Greek dictionaries after the 90’s has been a necessity due to the contacts which were established between the Greek and Albanian people after the fall of Communism in Albania and after the Albanian people came out of the half- century isolation. The efforts for compiling bilingual dictionaries during this period have been very important although there didn’t exist models which could be used to compile such dictionariesThe searches for solution to overcome the problems of prevention and deviant behavior in teenagers have focused our attention on the concept of personality-oriented approach in learner - centered education. In the psycho-pedagogical science it is established to be quite clear criteria that reveal the essence of deviant behavior of juveniles (teacher isolation, maladjusted, delinquency, instability of values, psychological aggression, social passivity, increased anxiety, conflictprone). The study of the etiology of deviant behavior allows the scientists to isolate the multiplicity of factors that produce such behavior. Causes of deviant behavior of teenagers is a pedagogical isolation, indocileness, tortfeasor, instability of value orientations, psychological aggression, social passivity, increased anxiety, conflict potential.The given article deals with the interests towards fit of passion of murder in the Science of Criminal Law of Georgia which already exists for a long time. It is stipulated by two causes: firstly, by permanent necessity towards investigation – judiciary practice which demands precise criteria of qualification of the act; secondly, by essential changes of criminal law doctrine in Georgia which caused working out of the new approach towards the problem of guilt. Consequently, Georgian scientists had to review a whole range of conceptions which did not answer demands of the present day. It is clear that due to complexity of the issue, it is hard to discuss approach of all conceptions in one article. We shall light briefly peculiarities of approach of Georgian scientists towards some conceptions. We should single out only so called argumentations of estimation for criminal and subject conceptions of psychological crime of guilt.Thу article describes one of the modern problems – political condition of international relations, relations between nations and inter-ethnical consent. The authors analyze the experience of Kazakhstan and Germany in ethnic politics, explore the importance of these issues in the world today.In modern conditions of oil and gas functioning there is exigency in search of field reserves of development at the expense of rational use of investment resources and efficient realization of investment projects. In the present situation such tasks solution is possible only in the framework of strategy development of component parts of the complex, including efficient attraction of foreign investment and mechanisms formation of its use.The availability of solar energy and its use for heating sanitary water is a resource that has been used since ancient times. However, current technologies allow optimization and its widespread use. In the project carried out by the National University of General Sarmiento (UNGS), it has designed an experimental system hybrid solar concentrator unit for heating water for sanitary use. This project was intended as a complement to traditional water heating for domestic use , based on a parabolic concentrator . The system was designed so that it can be used in existing conventional facilities or be installed as the primary system for heating water.All components are within the structure of the base parabolic concentrator, which allows transport and fixation. The proposed project conserves the energy consumption of a traditional water heater, develop applications and combine existing technologies in a solar tracking parabolic concentrator, so to optimize its operation. Not used the traditional flat panel, but experimented with a heat exchanger mounted in the focal zone of the concentrator. One of the main objectives of this project was to arrive at a design of an integrated product that contains all the necessary elements for operation in a single platform. This adjusted the designs and location of components achieving optimal layout of the facility, giving greater freedom in the design development and implementation of design concepts. This system will allow conventional energy saving which is normally used for purposes of domestic water heating, but plans to integrate these conventional systems. That is why we speak of a hybrid system, which uses solar energy and conventional energy (electricity or gas). Considering the average consumption that occur in a house with four people, this system can replace between 45% and 91% of the energy used for water heating use , depending on time of year and considering its application in the Argentina northwestern area. The components were sized according to the proposed operating conditions. In the case of solar energy utilization, the analysis was extended to different geographic locations of the country, analyzing performance and selecting different areas favorable for the implementation of the system. This project will lay the foundation for the future development of associated projects conducted by researchers and students of the university, such as the study of the control loops, the solar tracker system development and the possible construction of a prototype, for academic use.For nearly a decade, a significant amount of research, investigations, and scandals in mass media has produced a new understanding about the threat of violence in penitentiaries and the changing the international approaches to this phenomenon. Experience has shown that almost no country is immune from practices that amount to torture and ill-treatment. In the article author explores the reasons and scope of torture in the law enforcement and penitentiary systems of Georgia. Particularly author analyzed: reasons for the torture of the accused offenders on the stage of preliminary investigation; violence as a result of overcrowding in closed correctional facilities public policy and investigation of torture; and reasons for the use of force in prisons.

Compost production and composted manure quality evaluation

Composted manure can have an important role in production of substrate for growing seedlings, which would make the organic waste management more cost-effective, but also decrease the cost of seedlings production. Production of composted manure is of significant importance for family farms as well and even more so for farms practicing integral and organic agriculture. This research aims to establish the changes in physical and chemical characteristics of manure from cattle, horse, pig and poultry production during the composting process. The composting process lasted for 9 months. Analysis of physical and chemical characteristics was conducted according to TMECC 03.09-A methods. Temperatures necessary for disinfection of the compost material were developed during the process. During the composting process the humidity decreased and the proportion of the dry matter increased (29.2 % on average). The content of ash also significantly increased (37% on average) while the portion of the organic matter decreased. Compared to the initial material, the concentration of P, K, Ca and Mg after 9 months of composting was significantly increased in all composts, namely P and K 42 % on average and Ca and Mg 71 and 72% respectively. At the end of composting, all the composts have C/N ratio below 20:1, which indicates their stability. However, some researchers think that the ratio between the final and initial C/N (<0.6 to 0.75) is a better indicator of compost maturity, and according to that all the composts, with the exception of the chicken one (0.86), are mature. When using NH4+- N/NO3--N ratio as the indicator of compost stability (<0.16), the composts derived from cattle (semi-mature and fresh) and horse manure are stable (<0.14), composted pig manure is almost stable (0.64), while the composted chicken manure is still very unstable (14.75).