This page has only limited features, please log in for full access.

Unclaimed
Marcin Niemiec
Department of Agricultural and Environmental Chemistry, Faculty of Agriculture and Economics, University of Agriculture in Krakow, Al. Mickiewicza 21, 31-120 Krakow, Poland

Basic Info

Basic Info is private.

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 13 June 2021 in Molecules
Reads 0
Downloads 0

Natural products have always enjoyed great popularity among consumers. Wild tea is an interesting alternative to tea from intensive plantations. The term “wild tea” is applied to many different varieties of tea, the most desirable and valued of which are native or indigenous tea plants. Special pro-health properties of wild tea are attributed to the natural conditions in which it grows. However, there are no complex studies that describe quality and health indicators of wild tea. The aim of this research was to evaluate the quality of wild and cultivated green tea from different regions of China: Wuzhishan, Baisha, Kunlushan, and Pu’Er. The assessment was carried out by verifying the concentration of selected chemical components in tea and relating it to the health risks they may pose, as well as to the nutritional requirements of adults. Wild tea was characterized by higher micronutrient concentration. The analyzed teas can constitute a valuable source of Mn in the diet. A higher concentration of nitrates and oxalates in cultivated tea can be associated with fertilizer use. The analyzed cultivated tea was a better source of antioxidants with a higher concentration of caffeine. There were no indications of health risks for wild or cultivated teas.

ACS Style

Maciej Chowaniak; Marcin Niemiec; Zhiqiang Zhu; Naim Rashidov; Zofia Gródek-Szostak; Anna Szeląg-Sikora; Jakub Sikora; Maciej Kuboń; Salimzoda Fayzullo; Usmon Mahmadyorzoda; Agnieszka Józefowska; Andrzej Lepiarczyk; Florian Gambuś. Quality Assessment of Wild and Cultivated Green Tea from Different Regions of China. Molecules 2021, 26, 3620 .

AMA Style

Maciej Chowaniak, Marcin Niemiec, Zhiqiang Zhu, Naim Rashidov, Zofia Gródek-Szostak, Anna Szeląg-Sikora, Jakub Sikora, Maciej Kuboń, Salimzoda Fayzullo, Usmon Mahmadyorzoda, Agnieszka Józefowska, Andrzej Lepiarczyk, Florian Gambuś. Quality Assessment of Wild and Cultivated Green Tea from Different Regions of China. Molecules. 2021; 26 (12):3620.

Chicago/Turabian Style

Maciej Chowaniak; Marcin Niemiec; Zhiqiang Zhu; Naim Rashidov; Zofia Gródek-Szostak; Anna Szeląg-Sikora; Jakub Sikora; Maciej Kuboń; Salimzoda Fayzullo; Usmon Mahmadyorzoda; Agnieszka Józefowska; Andrzej Lepiarczyk; Florian Gambuś. 2021. "Quality Assessment of Wild and Cultivated Green Tea from Different Regions of China." Molecules 26, no. 12: 3620.

Journal article
Published: 04 February 2021 in Energies
Reads 0
Downloads 0

The paper presents the results of research aimed at evaluating the possibility of using selected tree leaf species to produce solid biofuels. The possibility of production of qualitative solid biofuels from urban tree leaves meets the expectations of the municipal sector. Collection of tree leaves in urban areas is very often necessary for road safety reasons, the need to collect biomass rich in dust and pollution as well as biomass infested with pests. The production of solid biofuels from tree leaves allows for effective management of this raw material with energy recovery. The performed research indicates such a possibility, and the obtained ash is used as a soil improver. The conducted research showed that the biomass of leaves of five tree species used in the experiment can be a source of raw materials for production of qualitative biofuels. The obtained pellets were characterized by properties comparable to those of classical wood pellets. The lower heating value of the obtained pellets ranged from 14.5 to 15.5 MJ∙kg−1. Physical properties of the obtained pellets described by bulk density (BD 600–660 kg∙m−3), mechanical durability (DU 90–96%), moisture (Mar 10–12.5%) indicate that these products can be used in existing combustion equipment. Preliminary analysis of the obtained ashes (determination of ash melting point, bulk density) indicates that they should not cause difficulties in ash removal systems from the combustion chamber.

ACS Style

Krzysztof Mudryk; Marcin Jewiarz; Marek Wróbel; Marcin Niemiec; Arkadiusz Dyjakon. Evaluation of Urban Tree Leaf Biomass-Potential, Physico-Mechanical and Chemical Parameters of Raw Material and Solid Biofuel. Energies 2021, 14, 818 .

AMA Style

Krzysztof Mudryk, Marcin Jewiarz, Marek Wróbel, Marcin Niemiec, Arkadiusz Dyjakon. Evaluation of Urban Tree Leaf Biomass-Potential, Physico-Mechanical and Chemical Parameters of Raw Material and Solid Biofuel. Energies. 2021; 14 (4):818.

Chicago/Turabian Style

Krzysztof Mudryk; Marcin Jewiarz; Marek Wróbel; Marcin Niemiec; Arkadiusz Dyjakon. 2021. "Evaluation of Urban Tree Leaf Biomass-Potential, Physico-Mechanical and Chemical Parameters of Raw Material and Solid Biofuel." Energies 14, no. 4: 818.

Journal article
Published: 09 June 2020 in Agronomy
Reads 0
Downloads 0

Northern Tajikistan creates favorable conditions for growing grapes due to its climate. The choice of method of grape production to ensure a high-quality yield, while reducing the negative effects of such production on the environment, poses a serious challenge to implementation regarding the principles of sustainable production. In addition to the essential techniques associated with grapevine production, such as irrigation, fertilization, and plant protection, a training system plays a significant role. The objective of this research was to evaluate the environmental efficiency of vineyard training systems in northern Tajikistan. The indicators accepted for the evaluation process were the vegetative growth of plants, yield, and environmental pressure of production expressed by greenhouse gas (GHG) emissions. The single-factor experiment was conducted in Ghafurov District, and the following training systems were used: (A) multi-arm fan; (B) Umbrella Kniffin; (C) one-side multi-arm, paired planting. Growth parameters, yield, yield quality, and GHG emissions were evaluated. The cultivation of grapes in training system “C” resulted in higher values of parameters such as Practical Bud Fertility coefficient and fruiting shoots pcs and higher yields. The training systems were ranked according to GHG emissions per yield unit in the following order, from lower to higher emissions: C < B < A.

ACS Style

Maciej Chowaniak; Naim Rashidov; Marcin Niemiec; Florian Gambuś; Andrzej Lepiarczyk. The Impact of Training Systems on Productivity and GHG Emissions from Grapevines in the Sughd Region in Northern Tajikistan. Agronomy 2020, 10, 1 .

AMA Style

Maciej Chowaniak, Naim Rashidov, Marcin Niemiec, Florian Gambuś, Andrzej Lepiarczyk. The Impact of Training Systems on Productivity and GHG Emissions from Grapevines in the Sughd Region in Northern Tajikistan. Agronomy. 2020; 10 (6):1.

Chicago/Turabian Style

Maciej Chowaniak; Naim Rashidov; Marcin Niemiec; Florian Gambuś; Andrzej Lepiarczyk. 2020. "The Impact of Training Systems on Productivity and GHG Emissions from Grapevines in the Sughd Region in Northern Tajikistan." Agronomy 10, no. 6: 1.

Journal article
Published: 23 March 2020 in Sustainability
Reads 0
Downloads 0

The goal of organic farming with respect to plant production is to create high-quality products while minimizing human impacts. The aim of this paper was to assess soil properties in selected organic farms in terms of the achievement of general and specific objectives of organic farming. Fifty five (55) organic farms were selected for the research; twenty five (25) of those farms additionally had conventional animal production with cattle breeding. Soil samples were collected from each farm and, the following parameters, deciding about the suitability for agriculture were determined: pH, content of organic carbon, available phosphorus and potassium, mineral nitrogen, and Total nitrogen content. The content of available phosphorus and mineral nitrogen was very low or low in most of the studied soils, which can lead to disturbance of homeostasis of agroecosystems. Potassium content in these soils was high. The properties of the studied soils indicate a high risk of chemical and biological degradation. Without implementing actions that control the pH and increase the content of nitrogen and phosphorus elements, the degradation will increase. Soil properties in the group of farms with animal production were more beneficial from the point of view of crop production, compared with farms that do not breed animals.

ACS Style

Marcin Niemiec; Maciej Chowaniak; Jakub Sikora; Anna Szeląg-Sikora; Zofia Gródek-Szostak; Monika Komorowska. Selected Properties of Soils for Long-Term Use in Organic Farming. Sustainability 2020, 12, 2509 .

AMA Style

Marcin Niemiec, Maciej Chowaniak, Jakub Sikora, Anna Szeląg-Sikora, Zofia Gródek-Szostak, Monika Komorowska. Selected Properties of Soils for Long-Term Use in Organic Farming. Sustainability. 2020; 12 (6):2509.

Chicago/Turabian Style

Marcin Niemiec; Maciej Chowaniak; Jakub Sikora; Anna Szeląg-Sikora; Zofia Gródek-Szostak; Monika Komorowska. 2020. "Selected Properties of Soils for Long-Term Use in Organic Farming." Sustainability 12, no. 6: 2509.

Journal article
Published: 05 March 2020 in Sustainability
Reads 0
Downloads 0

Optimization of plant nutrition is a very important part of primary production quality systems. Crop fertilization is the most important agrotechnical measure because it determines the amount and quality of the yield. Moreover, excess fertilization intensifies the eutrophication processes and the greenhouse effect. The study aimed to assess the suitability of slow-release fertilizers in cultivation of carrot subspecies Daucus carota L. ssp. sativus in the integrated production system. The objective was realized on the basis of a strict field experiment set up on a clay loam soil with low nutrient content. The dose of fertilizer was the experimental factor. The fertilizers were applied during the formation of the ridges. Traditional fertilizers (ammonium phosphate, potassium salt, ammonium nitrate, and a multi-component fertilizer Polifoska 6), as well as a multi-component fertilizer with slow release of nutrients, NPK Mg (18-12-24-4), were used. In individual variants of the experiment, different fertilization strategies were applied: integrated production fertilization, traditional fertilization, and fertilization based on the use of slow-release fertilizers. The control treatment comprised of unfertilized plants. The efficiency of nitrogen fertilization was evaluated based on agronomic efficiency, partial factor productivity, physiological efficiency, and removal efficiency. Fertilization strategy significantly impacted the quantity of obtained yield. In the control sample, prior to mineral fertilization, the crop yield was 33.53 Mg·ha−1. The largest yield was 82.30 Mg·ha−1.The largest yields were obtained from plants fertilized with a combination of slow-release fertilizers, with nitrogen introduced in the form of ammonium phosphate, and through conventional fertilization. The highest productivity and environmental efficiency were obtained in treatments with fertilization according to the principles of integrated production and with slow-release fertilizers. In terms of environmental efficiency, the best results were obtained through nitrogen fertilization using 400 kg of slow-release fertilizers. The use of slow-release fertilizers in carrot cultivation can significantly improve the efficiency of fertilization, both in terms of production and environmental protection.

ACS Style

Jakub Sikora; Marcin Niemiec; Monika Tabak; Zofia Gródek-Szostak; Anna Szeląg-Sikora; Maciej Kuboń; Monika Komorowska. Assessment of the Efficiency of Nitrogen Slow-Release Fertilizers in Integrated Production of Carrot Depending on Fertilization Strategy. Sustainability 2020, 12, 1982 .

AMA Style

Jakub Sikora, Marcin Niemiec, Monika Tabak, Zofia Gródek-Szostak, Anna Szeląg-Sikora, Maciej Kuboń, Monika Komorowska. Assessment of the Efficiency of Nitrogen Slow-Release Fertilizers in Integrated Production of Carrot Depending on Fertilization Strategy. Sustainability. 2020; 12 (5):1982.

Chicago/Turabian Style

Jakub Sikora; Marcin Niemiec; Monika Tabak; Zofia Gródek-Szostak; Anna Szeląg-Sikora; Maciej Kuboń; Monika Komorowska. 2020. "Assessment of the Efficiency of Nitrogen Slow-Release Fertilizers in Integrated Production of Carrot Depending on Fertilization Strategy." Sustainability 12, no. 5: 1982.

Conference paper
Published: 22 November 2019 in E3S Web of Conferences
Reads 0
Downloads 0

The objective of this study was to assess the potential of implementing GLOBAL. G.A.P. in bean-producing farms in the region of Talas in northern Kyrgyzstan. The assessment concerned the analysis of non-conformities with the GLOBAL G.A.P. standard in farms that had implemented the standard but had not been certified. The detailed objective was to identify critical areas in implementing said standard. To achieve the objective established, research was conducted in 2018. The research covered 112 farms that produce beans (local variety called ‘Łopatka’). Internal audits were carried out in the examined farms, in accordance with the checklist of the GLOBAL G.A.P. standard version 5.1. The results of the conducted research indicate that at the current level of agricultural development and awareness of farmers from Kyrgyzstan, implementation of the GLOBAL G.A.P. standard is going to be very difficult. Problems apply both to infrastructure and to producers’ mentality. Problems with infrastructure concern primarily the places to store plant protection products as well as mineral and organic fertilizers. Moreover, the identified non-conformities concerned adequate infrastructure serving for segregation and management of waste (both production waste and municipal waste). With respect to hygiene, problems concern both lack of sanitary infrastructure, as well as producers’ mentality associated with the need for maintaining hygiene. In most cases, the issue of the possibility of improving the condition of the environment within the farm’s premises is omitted. With respect to production technology, using organic and mineral fertilizers is problematic. In no case was water, soil or products analyzed, which is obligatory in the standard being discussed. A considerable problem in the area of the study is lack of support from government entities or companies dealing with efficient implementation of the standard. Effective development of the standard also depends on educating at the level of producers, inspectorate bodies, as well as on introducing quality management courses at individual education levels to the curriculum.

ACS Style

Marcin Niemiec; Monika Komorowska. Assessment of the possibility of implementing the GLOBAL G.A.P. standard in selected beanproducing farms in western Kyrgyzstan. E3S Web of Conferences 2019, 132, 02005 .

AMA Style

Marcin Niemiec, Monika Komorowska. Assessment of the possibility of implementing the GLOBAL G.A.P. standard in selected beanproducing farms in western Kyrgyzstan. E3S Web of Conferences. 2019; 132 ():02005.

Chicago/Turabian Style

Marcin Niemiec; Monika Komorowska. 2019. "Assessment of the possibility of implementing the GLOBAL G.A.P. standard in selected beanproducing farms in western Kyrgyzstan." E3S Web of Conferences 132, no. : 02005.

Journal article
Published: 01 August 2019 in Sustainability
Reads 0
Downloads 0

The purpose of the article is to identify and estimate the dependency model for the extreme prices of agricultural products listed on the Chicago Mercantile Exchange. The article presents the results of the first stage of research covering the time interval 1975–2010. The selected products are: Corn, soybean and wheat. The analysis of the dependency between extreme price values on the selected futures was based on the estimation of five models of two-dimensional extreme value copulas, namely, the Galambos copula, the Gumbel copula, the Husler–Reiss copula, the Tawn asymmetric copula and the t-EV copula. The next stage of the analysis was to test whether the structure of the dependency described with the estimated copulas is a sufficient approximation of reality, and whether it is suitable for modeling empirical data. The quality of matching the estimated copulas to empirical data of return rates of agricultural products was assessed. For this purpose, the Kendall coefficient was calculated, and the methodology of the empirical combining function was used. The conducted research allowed for the determination of the conduct for this kind of phenomena as it is crucial in the process of investing in derivatives markets. The analyzed phenomena are highly dependent on e.g., financial crises, war, or market speculation but also on drought, fires, rainfall, or even crop oversupply. The conducted analysis is of key importance in terms of balancing agricultural production on a global scale. It should be emphasized that conducting market analysis of agricultural products at the Chicago Mercantile Exchange in the context of competition with the agricultural market of the European Union is of significant importance.

ACS Style

Zofia Gródek-Szostak; Gabriela Malik; Danuta Kajrunajtys; Anna Szeląg-Sikora; Jakub Sikora; Maciej Kuboń; Marcin Niemiec; Joanna Kapusta-Duch. Modeling the Dependency between Extreme Prices of Selected Agricultural Products on the Derivatives Market Using the Linkage Function. Sustainability 2019, 11, 4144 .

AMA Style

Zofia Gródek-Szostak, Gabriela Malik, Danuta Kajrunajtys, Anna Szeląg-Sikora, Jakub Sikora, Maciej Kuboń, Marcin Niemiec, Joanna Kapusta-Duch. Modeling the Dependency between Extreme Prices of Selected Agricultural Products on the Derivatives Market Using the Linkage Function. Sustainability. 2019; 11 (15):4144.

Chicago/Turabian Style

Zofia Gródek-Szostak; Gabriela Malik; Danuta Kajrunajtys; Anna Szeląg-Sikora; Jakub Sikora; Maciej Kuboń; Marcin Niemiec; Joanna Kapusta-Duch. 2019. "Modeling the Dependency between Extreme Prices of Selected Agricultural Products on the Derivatives Market Using the Linkage Function." Sustainability 11, no. 15: 4144.

Journal article
Published: 18 July 2019 in Sustainability
Reads 0
Downloads 0

Globalization of the food market is associated with the possibility of selling products into newer markets. However, it is also associated with the necessity to ensure proper quality products. Quality defined by the ISO 9001:2015 standard consists of factors that are part of customers’ expectations concerning the safety of products and the technology of their manufacture. Currently, consumers are looking for products with defined and reproducible sensory properties, in which the content of harmful substances is below the critical values specified by legislation. This is observable particularly in developed countries. The second quality factor is the use of a production technology where negative environmental impacts are reduced. Recently, issues associated with protecting workers’ rights and social needs have also become very important. In successive versions of quality management systems, such as GLOBAL G.A.P. or SAI Platform, social issues are becoming more and more important. The aim of this study was to assess the role of risk analysis for social practices in small farms in building a quality management system. Surveys were conducted in 2018. The surveys covered 62 vegetables or fruit farms with a cultivated area of up to 20 ha. Their lack of staff was due to the character of production. Where mechanic production is possible in small farms, family members can secure workforce demand. To achieve the research objective, a risk analysis was carried out for the implementation of social practices according to the guidelines of the ISO 31000:2018 standard. The criteria and inventory of identified risks were carried out, based on the guidelines of GLOBAL G.A.P. Risk Assessments on Social Practice (GRASP). Based on the identified risks, the areas relating to social practices, which require improvement in order to satisfy compliance with the GLOBAL G.A.P. standard, were indicated. The results of the conducted research pointed to a high risk of good social practices not being carried out and not meeting compliance with the requirements of the GLOBAL G.A.P. standard. The most important identified problems are associated with the deficiency of competent workers as well as the lack of facilities where workers can rest, eat and drink. A considerable problem is the conformity of employment contracts with local legislation and ensuring that work time and rest time are consistent with the law. In conditions of small farms in Poland, the problem with ensuring compliance with the standard in question is often the small number of workers. Creating an organized quality management system in the area of social practices is difficult in these cases, and sometimes even impossible.

ACS Style

Marcin Niemiec; Monika Komorowska; Anna Szeląg-Sikora; Jakub Sikora; Maciej Kuboń; Zofia Gródek-Szostak; Joanna Kapusta-Duch. Risk Assessment for Social Practices in Small Vegetable farms in Poland as a Tool for the Optimization of Quality Management Systems. Sustainability 2019, 11, 3913 .

AMA Style

Marcin Niemiec, Monika Komorowska, Anna Szeląg-Sikora, Jakub Sikora, Maciej Kuboń, Zofia Gródek-Szostak, Joanna Kapusta-Duch. Risk Assessment for Social Practices in Small Vegetable farms in Poland as a Tool for the Optimization of Quality Management Systems. Sustainability. 2019; 11 (14):3913.

Chicago/Turabian Style

Marcin Niemiec; Monika Komorowska; Anna Szeląg-Sikora; Jakub Sikora; Maciej Kuboń; Zofia Gródek-Szostak; Joanna Kapusta-Duch. 2019. "Risk Assessment for Social Practices in Small Vegetable farms in Poland as a Tool for the Optimization of Quality Management Systems." Sustainability 11, no. 14: 3913.

Conference paper
Published: 23 January 2019 in IOP Conference Series: Earth and Environmental Science
Reads 0
Downloads 0

Spatial expansion of reed communities is one of the most frequently identified causes of biodiversity loss in lake ecosystems. Common reed is an expansive species and at high supply of biogens in the environment, it displaces other species from the rush communities. Common reed is a cosmopolitan species. It habitats wetlands, both dry and submerged, as well as periodically submerged. Increasing the area of reed rushes leads to a reduction in breeding area for many species of avifauna, especially in wetland areas. The effect of eutrophication of water reservoirs is the increase in the area occupied by reed rushes. Removing biomass from water reservoirs is one of the methods of their reclamation; it is done by slowing the eutrophication process. The aim of the study was to evaluate the economic and environmental efficiency of the removal and utilization of common reed from selected lakes of Pojezierze Mazurskie (the Masurian Lake District) for energy purposes. Within the framework of the study objective, in 2016 collected were samples of reeds from 15 selected lakes and the production potential of the studied reed rush communities was estimated. In the collected biomass samples, the calorific value and chemical composition were determined. Based on the calorific value, the potential for using biomass for energy purposes was estimated, and based on the chemical composition, the amount of nutrients removed from the aquatic environment was estimated. The results of the study show that the average biomass collected from the surface of 1 m2 of reed rushes was 1.053 kg DM. Depending on the habitat from which the samples were collected, significant differences in biomass yield were found. The biomass energy value ranged from 16.4 to 18.1 MJ kg−1, while the ash content ranged from 8.12 to 10.13%. Based on the results of the study, it was estimated that removing reed from 1 ha of rush would remove, on average, approx. 136 kg of nitrogen, approx. 18 kg of phosphorus, 28 kg of sulphur and 155 kg of potassium. The average of over 170 GJ of energy can be obtained from the removed reed biomass. Ash formed during the combustion process can be used as a soil improvement material due to its high macroelement content and a relatively low content of heavy metals. The results show that the removal of common reed can be an effective treatment process resulting in decreasing the lake trophy at an increased supply of nutrients in the catchment area.

ACS Style

M Niemiec; Ł Paluch; Z Gródek-Szostak; A Szeląg-Sikora; J Sikora; K Mudryk. Evaluation of the environmental and economic aspects of the use of common reed from eutrophic lakes for energy purposes. IOP Conference Series: Earth and Environmental Science 2019, 214, 012117 .

AMA Style

M Niemiec, Ł Paluch, Z Gródek-Szostak, A Szeląg-Sikora, J Sikora, K Mudryk. Evaluation of the environmental and economic aspects of the use of common reed from eutrophic lakes for energy purposes. IOP Conference Series: Earth and Environmental Science. 2019; 214 (1):012117.

Chicago/Turabian Style

M Niemiec; Ł Paluch; Z Gródek-Szostak; A Szeląg-Sikora; J Sikora; K Mudryk. 2019. "Evaluation of the environmental and economic aspects of the use of common reed from eutrophic lakes for energy purposes." IOP Conference Series: Earth and Environmental Science 214, no. 1: 012117.

Conference paper
Published: 23 January 2019 in IOP Conference Series: Earth and Environmental Science
Reads 0
Downloads 0

Development of modern aquaculture involves increasing the share of production in closed systems with water recirculation. In such facilities, waste with a considerable content of the solid fraction and a high concentration of biogenic elements is generated in the process of water treatment. According to present legislation, such waste cannot be used as fertilizers, which is contradictory to the idea of sustainability and rationalization of the use of environmental resources. The aim of this paper was to assess the chemical composition of African catfish farming waste in the context of the possibility of using it for fertilization purposes. The assumed goal was achieved by studying the waste generated at a water treatment facility that uses the method of active microscreens in an African catfish farm. 10 samples of waste (which, in raw form, is transported to the local wastewater treatment plant) were collected for the research. The content of dry matter, macroelements, microelements and heavy metals was determined in the studied waste. Dry matter content was determined by weight method, nitrogen and carbon content – by elemental analysis method, whereas the content of the other macroelements and trace elements was determined using the ICP-OES method. Results of the conducted research point to high concentrations of nitrogen and phosphorus. These are the main elements which decide on the fertilizing value of the studied material. Nitrogen content was approximately 5.354%, whereas phosphorus content – 3.436% calculated on dry matter. The content of other macroelements and trace elements was at a level observed in natural fertilizers. Heavy metals content did not disqualify the studied material from being used for fertilization purposes. Results of the conducted research indicate unambiguously that the studied material should be used for fertilization. Directing this waste to wastewater treatment plants is not well-founded from the economic and environmental point of view. The issue of proper management of waste generated in aquacultures with water recirculation should be regulated at the legislative level to reduce the amount of biogens dispersed in the environment and to improve the efficiency of production of aquaculture animals.

ACS Style

J Sikora; M Niemiec; A Szeląg-Sikora; K Mudryk; Sławomir Kurpaska; H Latała; J Rorat. Evaluation of the properties of waste from African catfish (Clarias Gariepinus B.) farming in the context of using it for agricultural purposes. IOP Conference Series: Earth and Environmental Science 2019, 214, 012034 .

AMA Style

J Sikora, M Niemiec, A Szeląg-Sikora, K Mudryk, Sławomir Kurpaska, H Latała, J Rorat. Evaluation of the properties of waste from African catfish (Clarias Gariepinus B.) farming in the context of using it for agricultural purposes. IOP Conference Series: Earth and Environmental Science. 2019; 214 (1):012034.

Chicago/Turabian Style

J Sikora; M Niemiec; A Szeląg-Sikora; K Mudryk; Sławomir Kurpaska; H Latała; J Rorat. 2019. "Evaluation of the properties of waste from African catfish (Clarias Gariepinus B.) farming in the context of using it for agricultural purposes." IOP Conference Series: Earth and Environmental Science 214, no. 1: 012034.

Journal article
Published: 01 July 2018 in Agricultural Engineering
Reads 0
Downloads 0

The aim of this study was to assess the possibility of using slow-release fertilizers under intensive vegetable cultivation. To achieve the set research objective, a field experiment was set up in 2017, where slow-release fertilizer (NPK (%) 20-10-10+4MgO) was applied. The experiment comprised three levels of fertilization with the use of slow-release fertilizers, the control without fertilization, and the control fertilized with conventional fertilizers. The slow-release fertilizer was applied directly under each plant and in rows – approximately 8 cm below the root level. The designed systems were evaluated based on the size of commercial yield, productivity index, agronomic efficiency index, removal efficiency index, and physiological efficiency index. The results obtained in the field experiment indicate that the highest plant yield (54.22 Mg of commercial yield∙ha−1) was obtained at the highest dose of slow-release fertilizers (600 kg∙ha−1 applied in rows approximately 8 cm below the root level). In the case of direct fertilization, in the treatment with the highest dose of slow-release fertilizer, a reduction in yield was observed. The best results, in terms of equalizing the mass of individual roots, were obtained under conventional fertilization. The most favorable value of the productivity index was obtained in the variant where 400 kg∙ha−1 slow-release fertilizer was applied directly, while in the case of row application the best results were obtained at the dose of 600 kg∙ha−1. Celeriac fertilization with slow-release fertilizers under root may result in producing a yield of bigger differences in root mass, compared to conventional fertilization system.

ACS Style

Marcin Niemiec; Monika Komorowska. The Use of Slow-Release Fertilizers as a Part of Optimization of Celeriac Production Technology. Agricultural Engineering 2018, 22, 59 -68.

AMA Style

Marcin Niemiec, Monika Komorowska. The Use of Slow-Release Fertilizers as a Part of Optimization of Celeriac Production Technology. Agricultural Engineering. 2018; 22 (2):59-68.

Chicago/Turabian Style

Marcin Niemiec; Monika Komorowska. 2018. "The Use of Slow-Release Fertilizers as a Part of Optimization of Celeriac Production Technology." Agricultural Engineering 22, no. 2: 59-68.

Conference paper
Published: 10 February 2018 in Springer Proceedings in Energy
Reads 0
Downloads 0

Fish processing generates considerable amounts of waste which constitutes a potential threat to the environment. The aim of this paper was to assess the possibility to use processing waste for anaerobic digestion and to use the generated digestate for fertilization purposes. This research involved evaluation of chemical composition of waste from a carp processing plant and of the digestate after methane fermentation. The content of dry matter, organic carbon, nitrogen, and other macroelements was determined in the samples. Moreover, the content of trace elements was determined. Dry matter content in the studied waste was 40%. Nitrogen content was approximately 5.56%, phosphorus—1.758%, calcium—0.4%, whereas mean potassium content was 0.502 g kg−1. As a result of conducting methane fermentation, a reduction in nitrogen content by about 50% and a considerable increase in quantity of almost all elements were observed. A high zinc content was recorded in the digestate, whereas concentration of other microelements was at a level close to the one in natural fertilizers. Concentrations of heavy metals did not exceed permissible values for organic fertilizers. The studied material can be a component for fertilizer production, and its fertilizing value depends mostly on nitrogen and phosphorus content.

ACS Style

Marcin Niemiec; Krzysztof Mudryk; Jakub Sikora; Anna Szeląg-Sikora; Monika Komorowska. Possibility to Utilize Fish Processing By-Products in the Context of Management of Non-renewable Resources. Springer Proceedings in Energy 2018, 639 -649.

AMA Style

Marcin Niemiec, Krzysztof Mudryk, Jakub Sikora, Anna Szeląg-Sikora, Monika Komorowska. Possibility to Utilize Fish Processing By-Products in the Context of Management of Non-renewable Resources. Springer Proceedings in Energy. 2018; ():639-649.

Chicago/Turabian Style

Marcin Niemiec; Krzysztof Mudryk; Jakub Sikora; Anna Szeląg-Sikora; Monika Komorowska. 2018. "Possibility to Utilize Fish Processing By-Products in the Context of Management of Non-renewable Resources." Springer Proceedings in Energy , no. : 639-649.