The plant kingdom is a crucial component of human nutrition and, consequently, the foundation of human sustenance. Humans have long recognized that specific plant-based foods provide essential substances that contribute to health, leading to the discovery of their medicinal properties. As a result of such chemical investigations, there has been an effort to synthetically produce the same or similar compounds that could replace natural products from the plant world in medical treatment and health maintenance. Consequently, modern medicine has increasingly relied on synthetic drugs, often overlooking the therapeutic value of many plants. However, despite this neglect, there is a growing movement to reintegrate effective natural plant compounds into the treatment of various diseases, as synthetic chemical compounds cannot fully substitute for plant-derived medications. The objective of this study was to collect and identify medicinal plant species in the Konjuh Mountain area across seven locations with varying geoecological characteristics. Field research was conducted in three municipalities within the Tuzla Canton (Kladanj, Živinice, and Banovići), covering seven sites, each measuring 3,000 m², with altitudes ranging from 560 to 1,100 m. During the investigation, 109 medicinal plant species were identified, including endangered and endemic varieties. Additionally, a survey was conducted among the local population of Konjuh Mountain regarding their knowledge, recognition, and collection of medicinal herbs. Results from the survey, which involved 50 participants of various ages, indicate that alternative medicine holds a significant role in treatment approaches and is viewed as a more accessible method of healing.

The mountain of Konjuh is characterized by a landscape of high aesthetic value with significant diversity in biological, geomorphological, and hydrological aspects. This, combined with its cultural-historical heritage, religious and traditional values, provides the foundation for educational, ecotourism, and sports-recreational tourism activities, as well as for visitor enjoyment and the development of economic activities. Located in the northeastern part of Bosnia and Herzegovina, Konjuh, along with Ozren, Javor, and Javornik, forms part of the chain of peripheral (higher) mountains, which, together with Trebavac and Majevica, represent the transition from the Dinaric mountain system to the vast Pannonian plain. The average elevation of the mountain is 1,000 meters. The Tuzla Canton government has passed a law declaring a portion of Konjuh Mountain, covering an area of 8,016 hectares, as a Cultural Heritage site of Bosnia and Herzegovina. The aim of this study was to systematically inventory medicinal plant species at seven sites on Konjuh Mountain in three municipalities (Kladanj, Živinice, and Banovići) at different altitudes (from 560 to 1,100 meters), classify medicinal plant species based on taxonomic and ecological attributes, and create phytocenological field records. During the research, 109 medicinal plant species were identified, including endangered and endemic species. The taxonomic structure of the families of medicinal plants on Konjuh Mountain revealed the presence of 43 families, with the most represented being representatives of the Lamiaceae family at 13.76%, Asteraceae at 11.92%, Fabaceae at 7.33%, and Plantaginaceae at 5.50%. A phytogeographical analysis of the medicinal plant flora identified 11 areal types and groups. An analysis of the biological spectrum of flora in all habitats indicates the presence of six primary life form types, with hemicryptophytes (H) being dominant, accounting for 59 species.

Soil contamination with heavy metals is becoming an increasingly global issue, as elevated levels of heavy metals exceeding regulatory limits are diminishing agricultural productivity and consequently endangering human health and the environment. This study aimed to assess the seasonal dynamics, accumulation, and translocation of heavy metals (As, Cd, Cr, Cu, Fe, Pb, Ni, and Zn) in the organs of white clover (Trifolium repens L.) depending on soil content. The heavy metal content in soil and white clover samples was determined using atomic absorption spectrophotometry. The results revealed that the analyzed soil was significantly contaminated with Cu and Zn in the industrial zone (GS) and with Pb near the urban landfill (D3). The content of heavy metals in white clover varied depending on the location and season. It is evident that white clover accumulated certain metals in its roots and leaves during spring, summer, and autumn, including Pb, Cr, Cu, Fe, Ni, and Zn. The analysis results indicated that Fe was the predominant element in white clover roots, while Zn and Fe were most abundant in the leaves. Values of BCF >1 and TF >1 for Zn suggest that white clover is a potential accumulator of this heavy metal.

Shallow mountain lakes are highly sensitive to eutrophication. Cyanobacteria and microalgae in planktonic communities are the main producers in lake ecosystems, but stability of its communities is impacted by numerous factors. The aim of this study is to analyze seasonal diversity and community structure of cyanobacteria and microalgae in plankton and periphyton of the lake Paučko, physical and chemical properties of water and evaluate trophic status. The mountain lake Paučko is the shallow natural lake in Protected landscape Konjuh in northeastern Bosnia and Herzegovina. Sampling of net – phytoplankton, periphyton and water for physical and chemical analysis was caried in two seasons in 2018. Light microscopes and immersion objective (magnification 1000x) were used for the identification and quantification of microalgae. Non metric multimensional scaling and Simper analysis were used to describe communities in periphytic and planktic samples. In total, 70 taxa were identified. The most numerous were Bacillariophyta with 52, and Chlorophyta with 7 taxa. Seasonal dynamics in plankton communities were observed in the direction of shift of abundant Cyclotella meneghiniana, Dinobryon divergens, Peridinum cinctum and Ankistrodesmus fusiformus in spring season to Rabdoderma lineare and Pantocsekiella comensis in summer sampling season. Physical and chemical analysis of water revealed high values of total phosphorus, which correspond to the evaluated meso to eutrophic status of the lake calculated by Rott Trophic Index. The lake Paučko is under high pressure caused by the influx and retention of nutrients, which makes it susceptible to eutrophication. The results of the study provide the first insight into the diversity of cyanobacteria and microalgae for this lake and can be useful in planning of restoration measures in the context of ecological monitoring.

Benthic diatoms have gained prominence as environmental bioindicators since the beginning of the twentieth century. Epilithic diatom taxa are frequently used for ecological water-quality assessments of rivers. Diversity of these dominant group of protists in the benthic communities can be indicative of changes in the freshwater ecosystem. The aim of this study was to analyze the diversity and ecology of diatoms of the Spreča River on the locations affected by urban and industrial pollution. Field sampling of the epilithic diatoms was carried out in the period of May 2021 at two locations, first before and second after the Lukavac city, which is known as industrial city in Bosnia and Herzegovina. Taxonomic verification was carried out using light microscope on permanent slides and revealed in total 38 diatom taxa. The genera with the largest number of species were Diatoma, Navicula and Nitzshia. Identified taxa are widespread species that are known for tolerating  high levels of pollution. A slightly higher number of taxa was recorded at the first location, while at the second, a higher proportion of halophilic taxa was observed.

Invasive plant species are foreign species that usually have a negative impact to the native flora and vegetation, human health, or that cause damage to agriculture and the economy. Therefore, the spread of invasive species is one of the biggest problems in nature protection. The aim of the work is to determine the invasive plant species in the wider area of the city of Lukavac, to analyze the life forms and the geographical origin. The research was done during the summer months of 2021. This paper presents the results of research on invasive plant species in the wider area of the town of Lukavac, which is located in the northeastern part of Bosnia and Herzegovina and administratively belongs to the Federation of Bosnia and Herzegovina and the Tuzla Canton. Total 12 invasive species from 8 families and 12 genera were recorded. The largest number of species belongs to the Asteraceae family, while the other families are represented by one species. Among life forms, therophytes (58, 33%) and phanerophytes (25%) dominate. Geophytes and hemicryptophytes are represented by only one plant species. Recorded invasive plant species come from North America (75%) and Asia (25%).

Plantation cultivation of grafted walnuts in Bosnia and Herzegovina did not exist until 6 years ago. Walnut seedlings (Juglans regia L) were mainly planted, which showed all the shortcomings related to the trees obtained from the seeds. In the last 5 years, there has been interest in planting grafted walnuts, so in this regard there was a need for controlled introduction of varieties suitable for this area. Research was conducted during 2020 - 2021 at four walnut tree cultivars, Chandler, Franquette, Fernor i Fernette. The aim of the research is to determine how certain varieties behave in agroecological conditions of the Majevica region and on that basis to give a proposal of the best variety for further spread in the area of this region. The research was conducted within the project number 02 / 9-712-1-5-3 / 21. The research was carried out at the Skakava Gornja site at an altitude of 192 m with a southwestern exposure (plot I) and a northeastern exposure at 172 m above sea level (plot II), with a terrain slope of 8%. The research related to vegetative growth included counting and measuring the average, then the minimum and maximum growth during two years. Yield monitoring included counting and measuring fruit number, average fruit size and calculating average yield. Generally the Chandler and Franquette varieties planted on the I plot had a stronger growth. Taking into account the vegetative growth, the number and size of fruits as well as the yield in the observed period, the Chandler and Franquette varieties are recommended for further expansion.

Rose family (Rosaceae) is one of  richest and most geographically widespread species of plant families. This family includes herbaceous and woody species, shrubs, and trees; the leaves are different, simple, or differently complex. The genus Fragaria (strawberry) includes perennial herbaceous plants. It is characteristic of this genus that the species are intensively vegetatively propagated using overhead stolons. The flowers are with a five-membered perianth and a developed outer cup. The flower has a larger number of anthers and carpels. A sample was taken at each site at least 30 individuals from the population in the flowering and fruiting phenophase. Morphological variability was assessed based on 5 populations and 150 individuals. This paper aims to determine the most variable and most consistent morphological characters that can serve in full and critical taxonomic analysis and revision of this variable taxon as well as related taxa from the family Rosaceae. Determine the forms and levels of individual, population, and interpopulation variability of the species Fragaria vesca L. depending on the environmental factors under which develop. Conducted comparative morphological analyzes have shown that the species Fragaria vesca L. shows a high degree of variability for all analyzed characters. Vegetative plant characters have a far greater share in overall variability compared to generative ones character. Pold does not belong to the group of those plant parts that vary the most.

Organic food production contributes to the preservation of human health, preservation and protection of the environment and increase of soil fertility, reduction of all forms of pollution as a consequence of intensive agricultural production and animal husbandry. Hence by purchasing products that carry the label organic product consumers indirectly affect the protection and preservation of the environment Organic food is food that is worth investing in due to the smaller amount of harmful substances in the products. Cornel cherry (Cornus mas L.) is one of the most suitable species for organic production. It is adaptable to various abiotic factors and is resistant to numerous pests and diseases. Aims: The aim of the study was to select promising dogwood phenotypes from the natural population for further reproduction by grafting. Study Design: The subject of the research was selected 6 self-growing dogwoods from a rural area. Place and Duration of Study: Samples of fruit were collected at the site of Ćehaje, City of Srebrenik,Tuzla Canton, BiH in the spring of 2019. Methodology: In order to determine the best traits, the measurement of physical quantities, determination of coefficients of variation and analysis of chemical characteristics of dogwood fruits harvested from trees of 6 wild phenotypes marked as DKA1, DKA2, DKA3, DKA4, DKA5 and DKA6 were performed. Results: Based on the analyzed indicators, the DKA6 phenotype showed the best results.

Allelopathy can have an important applicaiton in areas of agriculture, especially in integrated protection from weeds, by using of allelopathic crops in different ways. In this research allelopathic effects of invasive species acacia (Robinia pseudoacacia L.)  and white goosefood (Chenopodium album L.) are explored on germination of   tomato (Solanum lycopersicum L.). Water extracts of dry leaves of white goosefoot and acacia are prepared according tothe  method : Norsworthy (2003). Experiment has been made in controlled laboratory conditions. Results of this research show that acacia and white goosefood have negative allelopathy potential and they act inhibitory on germination of tomatoes. Research of allelopathy and allelopathic relationships of weed species and agricultural cultures represents a big challenge for those people who are working in food production, and at the same time can be an instrument of ecologically sustainable agriculture.