Kalcij i magnezij pripadaju skupini zemnoalkalijskih metala značajno zastupljenih u zemljinoj litosferi, odnosno skupini umjereno pokretnih makrohraniva koji imaju važnu ulogu u ishrani bilja. Svrha ovoga istraživanja jest usporedba količine ekstrahiranoga kalcija i magnezija otopinom amonijeva acetata (AA) i otopinom Mehlich 3 (Mehlich 3) iz tala istočne Hrvatske. Ukupno 200 uzoraka oraničnih horizonata (0 - 30 cm) najzastupljenijih tipova tala prikupljeni su u pet županija istočne Hrvatske 2012. godine. Nakon određivanja pH vrijednosti i sadržaja ukupnih karbonata u tlu grupirani su uzorci tla (uzorci s manje od 3,5 i više od 3,5% CaCO3). Utvrđeno je da metoda Mehlich 3 ekstrahira više kalcija i magnezija od metode AA, a razlike u količini ekstrahiranih kationa izraženije su kod karbonatnijih tala (>3,5% CaCO3), posebno za kalcij. U tlima s manjim sadržajem CaCO3 utvrđena je statistički vrlo značajna korelaciju (P≤0,01) između metoda AA i Mehlich 3 u količini ekstrahiranoga kalcija i magnezija. Statistički je vrlo značajna korelacija (P≤0,01) utvrđena i između količina Mg AA i Mg Mehlich 3 u tlima sa sadržajem CaCO3 većim od 3,5%, što obje metode čini pogodnima za određivanje magnezija neovisno o sadržaju CaCO3 u tlu.
钙和镁属于岩石圈中大量存在的一组碱土金属，即在植物食物中发挥重要作用的一组中等运动的宏观营养物质。Svrha ovoga istraživanja笑话usporedba količine ekstrahiranoga kalcija i magnezija otopinom amonijeva acetta（AA）i otopinom Mehlich 3（Mehlich）iz talaistočne Hrvatske。2012年，在克罗地亚-日本东部的五个地区共采集了200个最具代表性的橙色地平线样本（0-30厘米）。年在确定土壤中的pH值和总二氧化碳含量后，对土壤样品进行分组（CaCO3含量低于3.5%的样品）。Mehlich 3方法比AA方法提取更多的钙和镁，并且在碳酸盐波中表达的提取阳离子的量（>3.5%CaCO3）不同，特别是钙。在低体积CaCO3中，AA和Mehlich 3提取钙和镁的方法之间建立了统计学上显著的相关性（P≤0.01）。从统计数据来看，在CaCO3大于3.5%的范围内，Mg AA和Mg Mehlich 3之间建立了非常显著的相关性（P≤0.01），这使得这两种方法都可用于独立于地面CaCO3含量测定镁。
{"title":"Usporedba metoda AA i Mehlich 3 za ekstrakciju kalcija i magnezija iz tala istočne Hrvatske","authors":"Božica Japundžić-Palenkić, Domagoj Rastija, Slavica Antunović, Mihaela Blažinkov, Nataša Romanjek Fajdetić, Vladimir Zebec","doi":"10.18047/POLJO.25.1.6","DOIUrl":"https://doi.org/10.18047/POLJO.25.1.6","url":null,"abstract":"Kalcij i magnezij pripadaju skupini zemnoalkalijskih metala značajno zastupljenih u zemljinoj litosferi, odnosno skupini umjereno pokretnih makrohraniva koji imaju važnu ulogu u ishrani bilja. Svrha ovoga istraživanja jest usporedba količine ekstrahiranoga kalcija i magnezija otopinom amonijeva acetata (AA) i otopinom Mehlich 3 (Mehlich 3) iz tala\u0000istočne Hrvatske. Ukupno 200 uzoraka oraničnih horizonata (0 - 30 cm) najzastupljenijih tipova tala prikupljeni su u pet županija istočne Hrvatske 2012. godine. Nakon određivanja pH vrijednosti i sadržaja ukupnih karbonata u tlu grupirani su uzorci tla (uzorci s manje od 3,5 i\u0000više od 3,5% CaCO3). Utvrđeno je da metoda Mehlich 3 ekstrahira više kalcija i magnezija od metode AA, a razlike u količini ekstrahiranih kationa izraženije su kod karbonatnijih tala (>3,5% CaCO3), posebno za kalcij. U tlima s manjim sadržajem CaCO3 utvrđena je statistički vrlo\u0000značajna korelaciju (P≤0,01) između metoda AA i Mehlich 3 u količini ekstrahiranoga kalcija i magnezija. Statistički je vrlo značajna korelacija (P≤0,01) utvrđena i između količina Mg AA i Mg Mehlich 3 u tlima sa sadržajem CaCO3 većim od 3,5%, što obje metode čini pogodnima za određivanje magnezija neovisno o sadržaju CaCO3 u tlu.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/POLJO.25.1.6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48505756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The effect of different conservation soil tillage (CST) treatments and different level of nitrogen fertilization on Fusarium wheat grain infection on two locations are presented in this paper. The research was conducted on winter wheat with different soil tillage treatments: conventional tillage to 30 cm depth, subsoiling to 35-40 cm depth, chiselling up to 25 cm, disk-harrowing to 10-15 cm and no-tillage, without any tillage treatments and three different nitrogen rates (N1 - amount reduced by 30% of recommended; N2 - according to standard recommendation and N3 - amount increased by 30% of recommended). The occurrence of Fusarium species was determined in all the tested variants of tillage and fertilization treatments. The effect of reduced fertilization (N1) on Fusarium sp. grain infection in all tillage treatments was statistically lower in comparison with other (N2 and N3) nitrogen treatments. The lowest percentage of wheat grains infected with Fusarium sp. was recorded in conventional tillage on location Magadenovac and no tillage treatments on location Cacinci.
{"title":"The impact of different conservation soil tillage and nitrogen fertilization on wheat grain infection with Fusarium sp.","authors":"K. Vrandečić, D. Jug, J. Ćosić, J. Ilic, I. Jug","doi":"10.18047/POLJO.25.1.4","DOIUrl":"https://doi.org/10.18047/POLJO.25.1.4","url":null,"abstract":"The effect of different conservation soil tillage (CST) treatments and different level of nitrogen fertilization on Fusarium wheat grain infection on two locations are presented in this paper. The research was conducted on winter wheat with different soil tillage treatments: conventional tillage to 30 cm depth, subsoiling to 35-40 cm depth, chiselling up to 25 cm, disk-harrowing to 10-15 cm and no-tillage, without any tillage treatments and three different nitrogen rates (N1 - amount reduced by 30% of recommended; N2 - according to standard recommendation and N3 - amount increased by 30% of recommended). The occurrence of Fusarium species was determined in all the tested variants of tillage and fertilization treatments. The effect of reduced fertilization (N1) on Fusarium sp. grain infection in all tillage treatments was statistically lower in comparison with other (N2 and N3) nitrogen treatments. The lowest percentage of wheat grains infected with Fusarium sp. was recorded in conventional tillage on location Magadenovac and no tillage treatments on location Cacinci.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/POLJO.25.1.4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49314401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Margeta, G. Kralik, M. Grčević, D. Hanžek, Z. Kralik
The sensory evaluation is a scientific discipline used to evoke, measure, analyze and interpret reactions to stimuli perceived through senses of sight, smell, touch, taste, and hearing. Sensory evaluation applies principles of experimental design and statistical analysis to the use of human senses aiming to isolate the sensory properties of foods themselves and provide important and useful information to product developers, food scientists, and managers about the sensory characteristics of food products. To achieve the scientific control of the sensory evaluation test, good laboratory practice should be applied. It includes defining the test objective and test type, selection of right assessors, ensuring right test area, handling and preparing the sample in appropriate way, paying attention to test set-up and storing the test data safe in logical order. Regarding eggs, sensory characteristics are usually evaluated on eggs enriched with bioactive compounds. Sensory studies are often conducted either with trained (in accordance with international reference standards) or untrained panelists. Sensory evaluation of eggs after addition of different compounds is of great importance because sensory attributes such as aroma, flavor, aftertaste and overall acceptability of enriched eggs are very important to consumers.
{"title":"Importance of sensory evaluation in assessment of egg quality","authors":"P. Margeta, G. Kralik, M. Grčević, D. Hanžek, Z. Kralik","doi":"10.18047/POLJO.25.1.8","DOIUrl":"https://doi.org/10.18047/POLJO.25.1.8","url":null,"abstract":"The sensory evaluation is a scientific discipline used to evoke, measure, analyze and interpret reactions to stimuli perceived through senses of sight, smell, touch, taste, and hearing. Sensory evaluation applies principles of experimental design and statistical analysis to the use of human senses aiming to isolate the sensory properties of foods themselves and provide important and useful information to product developers, food scientists, and managers about the sensory characteristics of food products. To achieve the scientific control of the sensory evaluation test, good laboratory practice should be applied. It includes defining the test objective and test type, selection of right assessors, ensuring right test area, handling and preparing the sample in appropriate way, paying attention to test set-up and storing the test data safe in logical order. \u0000Regarding eggs, sensory characteristics are usually evaluated on eggs enriched with bioactive compounds. Sensory studies are often conducted either with trained (in accordance with international reference standards) or untrained panelists. Sensory evaluation of eggs after addition of different compounds is of great importance because sensory attributes such as aroma, flavor, aftertaste and overall acceptability of enriched eggs are very important to consumers.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/POLJO.25.1.8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47641842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nataša Romanjek Fajdetić, B. Popović, N. Parađiković, Z. Lončarić, Božica Japundžić Palenkić
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 in the mushroom production company Romanjek LLC in Slavonski Brod, Croatia. It was conducted in four vegetation cycles on two different substrates, the one originating from Eastern Europe and the other originating from Northern Europe. At the end of the trial, the basic chemical properties of substrates and mushrooms were recorded. A comparison of investigated substrate measurements demonstrates that the highest content of elements N, P, and K was determined in the substrate 2 originating from Northern Europe, while the concentration of microelements Fe and Zn was higher in substrate 1, originating, from Eastern Europe. There was a statistically significant difference in a macroelement content in the mushrooms grown on the substrates of different origin, as well as in the transfer of Zn and Fe from a substrate to mushrooms. There was a higher accumulation of the transferred Zn in comparison to Fe in the mushrooms regardless of the origin of the substrate.
{"title":"The influence of substrates having various origins on a nutritive value of champignon mushrooms (Agaricus bisporus Imbach)","authors":"Nataša Romanjek Fajdetić, B. Popović, N. Parađiković, Z. Lončarić, Božica Japundžić Palenkić","doi":"10.18047/POLJO.25.1.2","DOIUrl":"https://doi.org/10.18047/POLJO.25.1.2","url":null,"abstract":"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 in the mushroom production company Romanjek LLC in Slavonski Brod, Croatia. It was conducted in four vegetation cycles on two different substrates, the one originating from Eastern Europe and the other originating from Northern Europe. At the end of the trial, the basic chemical properties of substrates and mushrooms were recorded. A comparison of investigated substrate measurements demonstrates that the highest content of elements N, P, and K was determined in the substrate 2 originating from Northern Europe, while the concentration of microelements Fe and Zn was higher in substrate 1, originating, from Eastern Europe. There was a statistically significant difference in a macroelement content in the mushrooms grown on the substrates of different origin, as well as in the transfer of Zn and Fe from a substrate to mushrooms. There was a higher accumulation of the transferred Zn in comparison to Fe in the mushrooms regardless of the origin of the substrate.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/POLJO.25.1.2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67586862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vesna Očić, Z. Grgić, Kristina Batelja Lodeta, B. Š. Bobić
{"title":"The impact of subsidies on agricultural income in The Republic of Croatia","authors":"Vesna Očić, Z. Grgić, Kristina Batelja Lodeta, B. Š. Bobić","doi":"10.18047/POLJO.24.2.8","DOIUrl":"https://doi.org/10.18047/POLJO.24.2.8","url":null,"abstract":"","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2018-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/POLJO.24.2.8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43668344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Baličević, M. Ravlić, K. Lučić, Manuela Tatarević, Pavo Lucic, M. Marković
{"title":"Allelopathic effect of Aloe vera (L.) Burm. F. on seed germination and seedlings growth of cereals, industrial crops and vegetables","authors":"R. Baličević, M. Ravlić, K. Lučić, Manuela Tatarević, Pavo Lucic, M. Marković","doi":"10.18047/POLJO.24.2.2","DOIUrl":"https://doi.org/10.18047/POLJO.24.2.2","url":null,"abstract":"","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2018-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/POLJO.24.2.2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47950841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Kereša, Zoe Andrijanić, D. Kremer, Ivanka Habuš Jerčić, M. Barić, Kristina Batelja Lodeta, S. Bolarić, A. B. Mihovilović
Micromeria croatica is an endangered species with a great potential for use as a medical as well as ornamental plant. For commercial use, an efficient propagation protocol is required. The aims of this study were to establish an efficient protocol for micropropagation and rooting of M. croatica. A number of factors were tested including the influence of 6-benzylaminopurine (BAP) and 1-naphthaleneacetic acid (NAA) at different concentrations as well as the effect of explant orientation and topophysis on shoot proliferation. Rooting was investigated in agar-based medium supplemented with indole-3-butyric acid (IBA) or indole-3-acetic acid (IAA) at various concentrations. Media with 1 and 2 mg/L of BAP produced the highest number of shoots/explant. However, the lower concentration of BAP should be recommended due to longer shoots without any sign of hyperhydration. Explant orientation and node position showed equal capability for shoot proliferation. Importantly, 100% efficiency of rooting was achieved in an agar-based rooting medium. Acclimatisation exceeded 90%. Taken together, an efficient protocol for micropropagation and rooting of M. croatica has been established for future production.
{"title":"Efficient micropropagation and rooting of Micromeria croatica (Pers.) Schott (Lamiaceae)","authors":"S. Kereša, Zoe Andrijanić, D. Kremer, Ivanka Habuš Jerčić, M. Barić, Kristina Batelja Lodeta, S. Bolarić, A. B. Mihovilović","doi":"10.18047/poljo.24.2.4","DOIUrl":"https://doi.org/10.18047/poljo.24.2.4","url":null,"abstract":"Micromeria croatica is an endangered species with a great potential for use as a medical as well as ornamental plant. For commercial use, an efficient propagation protocol is required. The aims of this study were to establish an efficient protocol for micropropagation and rooting of M. croatica. A number of factors were tested including the influence of 6-benzylaminopurine (BAP) and 1-naphthaleneacetic acid (NAA) at different concentrations as well as the effect of explant orientation and topophysis on shoot proliferation. Rooting was investigated in agar-based medium supplemented with indole-3-butyric acid (IBA) or indole-3-acetic acid (IAA) at various concentrations. Media with 1 and 2 mg/L of BAP produced the highest number of shoots/explant. However, the lower concentration of BAP should be recommended due to longer shoots without any sign of hyperhydration. Explant orientation and node position showed equal capability for shoot proliferation. Importantly, 100% efficiency of rooting was achieved in an agar-based rooting medium. Acclimatisation exceeded 90%. Taken together, an efficient protocol for micropropagation and rooting of M. croatica has been established for future production.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2018-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/poljo.24.2.4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47189150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Borislav Miličević, Đ. Ačkar, J. Babić, A. Jozinović, R. Miličević, E. Petošić, T. Kujundžić, D. Šubarić
{"title":"Aroma profile and sensory quality of honey brandy produced by the fermentation process with immobilized yeast cells","authors":"Borislav Miličević, Đ. Ačkar, J. Babić, A. Jozinović, R. Miličević, E. Petošić, T. Kujundžić, D. Šubarić","doi":"10.18047/POLJO.24.2.5","DOIUrl":"https://doi.org/10.18047/POLJO.24.2.5","url":null,"abstract":"","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2018-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/POLJO.24.2.5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42619250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Rašić, E. Štefanić, Slavica Antunović, J. Jović, S. Kristek
{"title":"Pollen analysis of honey from north-eastern Croatia","authors":"S. Rašić, E. Štefanić, Slavica Antunović, J. Jović, S. Kristek","doi":"10.18047/POLJO.24.2.6","DOIUrl":"https://doi.org/10.18047/POLJO.24.2.6","url":null,"abstract":"","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2018-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/POLJO.24.2.6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42288765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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