Brigita Popovic

University of Osijek | UNIOS · Department of Agroecology

The protection of air from pollution is one of the basic principles of sustainable development, and this article analyzes the joint impact of various types of agricultural production and traffic on nitrogen oxide (NOx) emissions. The goal of this research is the development of a new methodology for assessing the combined impact of different types o...

Paper’s objective was to provide a critical overview of the current state of wastewater generation in different processes around the world and their use in irrigation. As a follow-up, a brief overview of the classification of wastewater and its potential for end use is presented. Furthermore, a specific overview of irrigation using wastewater is pr...

Two-year experiments were conducted on two different types of soil during 2021 and 2022, respectively. The influence of microbiological preparations Mycor-FAZOS, Vitality-FAZOS, and Super Green-FAZOS on the yield and quality parameters of wheat the Mura variety (Agrigenetics) was investigated. The experiment was set up according to the split-block...

Stationary field experiment pertaining to the winter wheat in Croatia was performed during the three seasons. This study’s intention was to examine and diagnose the effect of tillage systems (TS) on soil chemical properties (soil acidity, phosphorus [P], potassium [K], and organic matter content). The TSs were as follows: CT — ploughing up to 30 cm...

This research was set up in 2013 in agroecological conditions of continental Croatia (3 different locations). The extperiment was set as a split-plot design in four replicates, with three levels of the main treatments of soil tillage (CT - plowing; MD - reduced multiple disk harrowing; SD - reduced single disk harrowing) and levels of subtreatment...

The study was conducted as open field trial, with irrigation, with the Clery strawberry variety. The aim of the study was to investigate the effect of foliar application on berry and seaweed extract on the yield and quality of strawberry fruit (sugar, acid and anthocyanin content). The experiment was set up by random block system in 4 repetitions....

The implementation of sustainable agro-energy systems that integrate crop, livestock, and bioenergy production is attracting increasing interest from farmers. Livestock produces large amounts of animal manure which can serve as organic fertilizer for crops and pasture growth. However , the nutrients contained in manure can adversely affect air, wat...

Widespread use of pesticides in intensive agriculture indicates the need for permanent monitoring of their residues in soil. For this purpose, a total of 22 evenly distributed sampling points of arable land were chosen in the sampling area in Serbia. Soils were divided into groups according to the previous crop (pepper, vegetables, maize, wheat and...

To achieve high yields and high-quality roots, sugar beet has high requirements for both macro and micronutrients. Nitrogen fertilizers are usually applied in the soil before sowing in spring. Nitrates are not only present in the environment, i.e. in the air, food (mostly in fruits and vegetables) and water but they are also are used as fertilizers...

A multidisciplinary field experiment for winter wheat was conducted in Croatia during three seasons. The intention was to examine the effect of tillage systems (TS) on the economic indicators, that is, on the gross margin (GM), rate of profitability (ROP), cost-effectiveness (E) and productivity (P). The TSs were as follows: CT — plowing up to a 30...

The study of salinity stress in irrigated floriculture can make a significant contribution to the preservation of freshwater sources. To analyze the morphological and aesthetic responses of zinnia (Zinnia elegans L.) and periwinkle (Catharanthus roseus (L.) G. Don) to different salinity stress levels, the following treatments were performed: s0 = m...

Wheat cultivars differ in their response to nitrogen (N) fertilizer, both in terms of its uptake and utilization. Characterizing this variation is an important step in improving the N use efficiency (NUE) of future cultivars while maximizing production (yield) potential. In this study, we compared the agronomic performance of 48 diverse wheat culti...

The aim of the study was to determine the influence of the origin of the substrate on the possibility of growing spinach seedlings, on the zinc content of spinach seedlings, and how the additional introduction of zinc solution into different substrates affects the translocation of zinc into spinach seedlings. Seedlings grown in the control-Organic...

Acid soils with pH values below 5.5 have a negative effect on agricultural production. For this reason, liming is applied as a measure to raise the soil pH to the optimum (pH = 6-7). The aim of our research was to evaluate and compare the effectiveness of four liming materials (wood ash from biomass powerplant, filter dust from cement factory, blas...

Climate change and water deficity greatly affect modern agricultural production, and one of the most important agro-technical measures in this regard is irrigation, where the use of wastewater for this purpose appears as one of the solutions. Wastewater treatment achieves the remediation and removal of heavy metals, thus preventing harmful effects...

The aim of research was to determine the productivity of the intercropped system of walnut and winter barley and investigate how barley performed in that system in terms of yield, yield components, and nutrient content in the grain. Field trial consisted of three plots: a) control plot of monoculture barley; b) sole walnut orchard; c) walnut orchar...

An increased awareness of environmental protection and sustainable production raise the necessity of incorporating the selection of low nitrogen-tolerant winter wheat cultivars for high yield and quality in the breeding process. This selection can be assisted by using stress screening indices. Our study aimed to evaluate and compare a number of str...

An above‐ground plant diversity affects a below-ground biodiversity. A soil fauna diversity is important for the ecosystems’ sustainability. It reflects both the abiotic conditions and the soil’s biotic activity. This study’s objective was to assess the effect of an agroforestry system on the nematode abundance and trophic group distribution and on...

In Croatia, farmers are showing increasing interest in establishing walnut orchards for nut production on arable land due to higher anticipated net margins. One way to address the lack of profitability in the initial years when nut yields are low may be to plant arable intercrops. The anticipated impacts of this practice were assessed using a bioph...

Proizvodnja peršina započinje odabirom kvalitetnog sjemena. S obzirom da je peršin kultura poznata po problematičnoj klijavosti, proizvođači bi prije sjetve svakako trebali provjeriti kvalitetu sjemena. Cilj rada bio je ispitivanje klijavosti sjemena i kvalitete presadnica peršina proizvedenih od sjemena četiri različita proizvođača. Sjemenke su po...

The aim of this study was to investigate the nematocidal effect of the preparations based on fluopyram (pesticide) and liquid chicken manure (natural amendment) on the population density of the root-knot nematodes, Meloidogyne spp. in carrot crops. The field experiment was set up in four treatments: control (C), fluopyram (FLU), fluopyram and liqui...

Biofortification experiments with three winter wheat cultivars treated with sodium selenate through foliar- and soil-fertilisation were conducted at two locations in Croatia and Serbia in two consecutive years to increase the selenium (Se) concentration in bread-making wheat grain. The treatments were: (a) 5 g ha⁻¹ Se foliar-, (b) 10 g ha⁻¹ Se foli...

Monitoring the biological quality of soils often include nematodes as bioindicators. The aim of this study was determined the influence of liming, P and Zn effect on nematode community structure as an indicator of soil ecosystem health in hot pepper. Pot experiment with hot pepper was conducted in randomized block design as follows: control, P, Zn,...

The metals such as Fe, Cu, Zn and Mn are the essential elements that have an important role in the human immune system. The aim of this research was to determine the concentration of nutritive values of macroelements (N, P, and K) and microelements (Fe and Zn) in a mushroom substrate and in a champignon mushroom fruiting body. A trial was conducted...

The aim of this study was to determine the influence of liquid chicken manure preparation on nematode biodiversity as an indicator of soil health and agrochemi-cal soil properties. The field experiment was conducted during two years into two treatments and three samplings per year. One plot was treated with liquid chicken manure preparation (LCMP)...

The aim of this research was to investigate the seed quality of perennial ryegrass after 5-year storage treatments at various temperatures. The seeds of two cultivars of perennial ryegrass (diploid Bartwingo and tetraploid Calibra) were used, and the storage treatment temperatures were: room temperature (about 21°C), 10°C, -20°C and -80°C. Seed qua...

Sažetak Zbog sve veće svijesti o ekologiji, komunalni otpad se koristi u svrhu dobivanja komposta. Kako bi se utvrdila kvaliteta takvog komposta ispitiana je energija klijavosti krastavca (Cucumis sativus L.) i salate (Lactuca sativa L.). U istraživanju je korišteno pet supstrata, dva dobivena iz komunalnog otpada, dva dobivena iz poljoprivrednih o...

Sažetak Soja je najzastupljenija i najbitnija leguminoza koja se proizvodi zbog visokog sadržaja ulja i bjelančevina u zrnu. Cilj istraživanja bio je ustanoviti utjecaj gnojidbe različitim količinama dušika i fosfora te primjene mikrobiološkog preparata na sadržaj ulja i bjelančevina. Najveći sadržaj ulja iznosio je 22,55%, a najveći sadržaj bjelan...

Several batch experiments were conducted on the anaerobic co-digestion of dairy cow manure (DCM) with three harvest residues (HR) (soybean straw, sunflower stalks, and corn stover). The influence of thermal pretreatment of HR on biogas production was investigated, where the HR were thermally pretreated at two different temperatures: T = 121 °C and...

Determining potassium supply of soil plays an important role in intensive crop production, since it is the basis for balancing nutrients and issuing fertilizer recommendations for achieving high and stable yields within economic feasibility. The aim of this study was to compare the different extraction methods of soil potassium from arable horizon...

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) r...

Application of Geographic Informatic System (GIS) in land-planning management has been well known among researchers for over 40 years, and for site-specific fertilization, it started to be recognized in the early 90s. GIS modeling in agriculture helps to identify site-specific distribution of a certain characteristics, and by creating theme maps as...

SAŽETAK Kisela tla, s pH reakcijom ispod 5,5, predstavljaju problem u poljoprivrednoj proizvodnji. Kao mjera podizanja pH reakcije tla i postizanja optimalnih pH vrijednosti često prijmjenjuje kalcizacija. Cilj istraživanja je utvrditi mogućnost primjene tri nova kalcizacijska materijala (drveni pepeo, fi ltarska prašina i bazična troska) te karbok...

The aim of this study was to compare electroultrafiltration extractable potassium (KEUF) from arable horizon (0-30 cm) of nine different soil types with ammonium lactate method (KAL), which is frequently used analytical method for determining the accessibility of nutrients and it is a common method used for issuing fertilizer recommendations.

A research of seed storage period and storage temperature effects upon the seed quality and seedlings traits for the seeds of two perennial ryegrass cultivars (Bartwingo and Calibra) was conducted. Seeds were stored in hermetically sealed glass dishes at four different temperatures (room temperature about 21°C, 10°C, -20°C and -80°C) and for three...

The research objective was to determine the influence of basic soil chemical properties on total concentration and available fractions of essential trace elements in the soil. Agrochemical soil analysis were conducted at two localities of different soil properties Berak and Vinogradci in eastern Croatia. The soil at the site Berak was eutric cambis...

It is well known that soil properties, metal speciation and plant species, especially soil-plant interactions, determine the availability of metals in soils. Therefore, various one-step extraction methods such as EDTA and DTPA have been used to represent the available fraction. In present study we observed the total (aqua regia) and available fract...

The aim of this paper is to determine fertilization and the frequency of analysis in Osijek- Baranja and Vukovar-Srijem counties. One third of the farms do not provide analysis and does not have any data, and 55% of farms has sufficient data on the soil. The 47% of farmers never use organic fertilizers. The average mineral fertilization was 112 kg...

Soil acidity is global factor limiting soil fertility of about 40% of the cultivable land which are acid. The common liming recommendations are based on different soil properties and therefore the calculation could differ according to available and used soil data. The aim of this paper was to determine the suitability of simple regression models fo...

Composted manure can have an important role in production of substrate for growing seedlings, which would make the organic waste management more costeffective, 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 or...

Soil acidification results with the chemical changes in soil, especially with availability changes of P, K, Ca, Mg, essential and potentially toxic heavy metals. The aim of this paper was to determine the influence of acid soils liming to phosphorus and potassium availabilty change and to determine plant response. Liming and fertilization pot exper...

Far as is known there is no relevant information about the status of total and organic phosphorus in Croatian soils, so aim of this study was to determine the total and organic phosphorus in soils of the eastern Croatia. In total were collected 94 soil samples and the soil pH, organic matter as well as the total phosphorus content and organic phosp...

Intensive agriculture throughout a long period is likely to cause soil degradation. Therefore, monitoring of soil quality in agricultural regions is essential for food quality and food safety. The present study is conducted in the agricultural region of Croatia (Osijek-Baranja County) where 74 samples were collected from forest land (21) and agricu...

The aim of this paper was to determine the influence of acid soils liming and initial soil acidity as well as organic matter content on availability of four heavy metals (Zn, Pb, Cr and Cd). Liming experiment was conducted in laboratory conditions with six soils of different acidity according to rapid incubation method which was conducted in sealed...

Cadmium is a non-essential heavy metal toxic to plants, animals and humans. In plants, it affects root and shoot growth, nutrient uptake and homeostasis. Since plants have the capacity to accumulate cadmium in their tissues due to soil pollution, increasing levels of cadmium in the food chain is possible. Six maize genotypes (B73, Mo17, B84, OS6-2,...

To determine impact of soil chemical properties and different wheat genotypes in Croatia on micronutrient and toxic elements content in wheat integral flour. Research was conducted and soil samples were collected from two different production areas in the Republic of Croatia: Ovčara and Dalj. Besides soil samples, grain samples of four different Cr...

The purpose of this article was to compare soil P extraction by sodium bicarbonatesolution (Olsen P) and by ammonium lactate (AL P) in calcareous soils in Croatiaand to create a model for predicting AL P values using the correlation of these soiltests and common soil analysis data in Croatia. Soil samples were collected, nearOpuzen city, in the val...

Evaluation of manures, composts and growing media quality should include enough properties to enable an optimal use from productivity and environmental points of view. The aim of this paper is to describe basic structure of organic fertilizer (and growing media) evaluation model to present the model example by comparison of different manures as wel...

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...

The investigations were carried out in a climate chamber at two temperatures (10 and 20°C) and four pH values of water solution (4, 5, 6 and 7) with the seeds of three white clover cultivars of the same age and different in origin (Regal, Jura and Rivendel). We studied the influence of temperature and pH values on energy of germination, germination...

Organic fertilizers evaluations should describe quality from productivity and environmental points of view. The aim of this paper is to describe computer model for evaluation of organic fertilizers' impact on plant nutrition and environment and to compare plant nutritional and environmental values of different fresh and composted manures. Four diff...

Evaluation of manures, composts and growing media quality should include enough properties to enable an optimal use from productivity and environmental points of view. The aim of this paper is to describe basic structure of organic fertilizer (and growing media) evaluation model to present the model example by comparison of different manures as wel...

The uptake of copper and lead supplied in nutrient solution (500 mu M) and their detrimental impact on photosynthetic pigments concentration and dry matter accumulation in three lettuce cultivars were investigated. The concentration of copper and lead in lettuce leaf ranged from 8.62 to 14.20 mg kg(-1) leaf dry weight for copper, and from 1.97 to 4...

The 40 soil samples of continental Croatia were analysed on chemical properties and heavy metal extracted by aqua regia, EDTA and HCl with aim to compare extraction methods and to determine impact of soil pH on heavy metals availability. The highest total content was determined for Fe. and the lowest for Cu and Ni regardless to soil pH. Soil pH hav...

The aim of this paper was to determine organic and total P in soils of continental part of Croatia. All soil samples (n = 40) were grouped according to soil reaction into two groups: acid soils ranged from pH(KCl), 3,80 to 6,62 and calcareous soils ranged from pH(KCl) 6,70 to 7,83. there was strong multiple regression realtionship (r=0,88) between...

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 ran...

J. J. Strossmayera, Trg Svetog Trojstva 3, 31 000 Osijek, Hrvatska (e-mail: mlisjak@pfos.hr) 2 Poljoprivredni institut Osijek, Juţno predgrađe 17, 31 000 Osijek, Hrvatska 3 Odjel za biologiju, Sveučilište J. J. Strossmayera, Trg Ljudevita Gaja 6, 31 000 Osijek, Hrvatska Saţetak Elektriţni konduktivitet je analiziran kod tri kultivara soje, u sjemen...

Saţetak Presadnice paprike hibrida Blondy F1, starosti 40, 50 i 60 dana, proizvedene su u grijanom plasteniku sjetvom u supstrat Klasamnn Potgrond H. Korišteni su stiroporni kontejneri za 40, 84 i 104 biljke s volumenom sjetvenog mjesta 100, 43 i 32 ml. Nakon proizvodnje presadnica analizirani su visina presadnica, broj listova, duljina listova, uk...

Sažetak Cilj je utvrditi učinak kalcizacije i gnojidbe mineralnim P na prinos i iznošenje P te na količinu P u nadzemnim ostacima kupusa. Jednogodišnjim istraživanjem ostvaren je prinos glavice hibrida Quisto 44,7 t ha -1 bez gnojidbe, a 71,7-73,7 t ha -1 uz gnojidbu. Prinos bez gnojidbe dvostruko je niži na alkalnom regosolu nego na lesiviranom tl...