O. Arogundade, A. Salawu, Adeyemi Osijo, K. Kareem
Sweet pepper is attacked by a number of viruses which cause serious yield losses for many growers. The influence of mulching on virus disease incidence in sweet pepper was studied under irrigation in NIHORT. Healthy seedlings were transplanted to the field and arranged in a randomized complete block design (RCBD). Different mulch used included air-dried leaves of Azadirachta indica (Neem), Tithonia diversifolia (Tithonia), Neem + Tithonia (w/w) and plastic mulch (white, black and yellow) while the control had no mulch. Incidence and severity of virus-like diseases on growth and yield were evaluated. Result indicated that plants grown using white plastic mulch had the lowest disease incidence of 34.43%. Plants grown with Tithonia, Neem, and Neem + Tithonia mulch had high disease incidence of 100%, 88%, and 90.60% respectively. Average virus disease severity ranged from 2.30 and 3.33 on a scale of 1-5 scoring system. Symptoms observed on symptomatic plants include mosaic, mottle, wrinkle and leaf reduction. Plots treated with black plastic mulch produced the lowest fruit weight, while the white and yellow plastic mulch induced highest fruit weight found. The results obtained showed that white and yellow plastic mulches are effective management options for viruses of sweet pepper.
{"title":"Influence of mulching on virus disease incidence, growth and yield of sweet pepper (Capsicum annuum)","authors":"O. Arogundade, A. Salawu, Adeyemi Osijo, K. Kareem","doi":"10.18047/poljo.25.2.6","DOIUrl":"https://doi.org/10.18047/poljo.25.2.6","url":null,"abstract":"Sweet pepper is attacked by a number of viruses which cause serious yield losses for many growers. The influence of mulching on virus disease incidence in sweet pepper was studied under irrigation in NIHORT. Healthy seedlings were transplanted to the field and arranged in a randomized complete block design (RCBD). Different mulch used included air-dried leaves of Azadirachta indica (Neem), Tithonia diversifolia (Tithonia), Neem + Tithonia (w/w) and plastic mulch (white, black and yellow) while the control had no mulch. Incidence and severity of virus-like diseases on growth and yield were evaluated. Result indicated that plants grown using white plastic mulch had the lowest disease incidence of 34.43%. Plants grown with Tithonia, Neem, and Neem + Tithonia mulch had high disease incidence of 100%, 88%, and 90.60% respectively. Average virus disease severity ranged from 2.30 and 3.33 on a scale of 1-5 scoring system. Symptoms observed on symptomatic plants include mosaic, mottle, wrinkle and leaf reduction. Plots treated with black plastic mulch produced the lowest fruit weight, while the white and yellow plastic mulch induced highest fruit weight found. The results obtained showed that white and yellow plastic mulches are effective management options for viruses of sweet pepper.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/poljo.25.2.6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42320088","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}
Da bi se utvrdila mogućnost korištenja klorofilmetra u procjeni optimalne zrelosti listova flue-cured duhana za berbu, provedeni su dvogodišnji poljski pokusi. Postupci u pokusu bili su gnojidba dušikom (25 i 35 kg ha-1) i vrijeme berbe (rana, srednja i kasna berba). Relativni sadržaj klorofila 7., 11., 15. i 17. lista mjeren je u vrijeme berbe. Nakon berbe i sušenja tih listova analizirani su prinos i cijena te sadržaj nikotina i reducirajućih šećera. Nije bilo signifikantnog utjecaja gnojidbe dušikom na prosječni prinos, cijenu i sadržaj reducirajućih šećera. Međutim, dobivene su dvije interakcije gnojidba x vrijeme berbe za prinos. Viša gnojidba dušikom rezultirala je višim prosječnim sadržajem nikotina, ali samo u 15. i 17. listu u 2010. S obzirom na vrijeme berbe rezultati istraživanja su, uz nekoliko izuzetaka, pokazali da su viši prinosi, cijene, sadržaji nikotina i sadržaji reducirajućih šećera ostvareni srednjom ili/i kasnom berbom. Za pronalaženje raspona indeksa sadržaja klorofila u okviru kojeg bi se trebala provoditi berba listova duhana korišteni su matematički parametri odnosa između indeksa sadržaja klorofila u vrijeme berbe i istraživanih svojstava. U ovom istraživanju optimalno vrijeme za berbu listova duhana bilo je u rasponu indeksa sadržaja klorofila od 11-15.
{"title":"Uporaba klorofilmetra u procjeni zrelosti listova duhana flue-cured za berbu","authors":"Kristina Gršić, M. Čavlek","doi":"10.18047/POLJO.25.2.3","DOIUrl":"https://doi.org/10.18047/POLJO.25.2.3","url":null,"abstract":"Da bi se utvrdila mogućnost korištenja klorofilmetra u procjeni optimalne zrelosti listova flue-cured duhana za berbu, provedeni su dvogodišnji poljski pokusi. Postupci u pokusu bili su gnojidba dušikom (25 i 35 kg ha-1) i vrijeme berbe (rana, srednja i kasna berba). Relativni sadržaj klorofila 7., 11., 15. i 17. lista mjeren je u vrijeme\u0000berbe. Nakon berbe i sušenja tih listova analizirani su prinos i cijena\u0000te sadržaj nikotina i reducirajućih šećera. Nije bilo signifikantnog utjecaja gnojidbe dušikom na prosječni prinos, cijenu i sadržaj reducirajućih šećera. Međutim, dobivene su dvije interakcije gnojidba x vrijeme berbe za prinos. Viša gnojidba dušikom rezultirala je višim prosječnim sadržajem nikotina, ali samo u 15. i 17. listu u 2010. S obzirom na vrijeme berbe rezultati istraživanja su, uz nekoliko izuzetaka, pokazali da su viši prinosi, cijene, sadržaji nikotina i sadržaji reducirajućih šećera ostvareni srednjom ili/i kasnom berbom. Za\u0000pronalaženje raspona indeksa sadržaja klorofila u okviru kojeg bi se trebala provoditi berba listova duhana korišteni su matematički parametri odnosa između indeksa sadržaja klorofila u vrijeme berbe i istraživanih svojstava. U ovom istraživanju optimalno vrijeme za berbu listova duhana bilo je u rasponu indeksa sadržaja klorofila od 11-15.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/POLJO.25.2.3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48259376","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 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 liquid chicken manure (FLU+LCM) and liquid chicken manure (LCM) by a random block design in four replicates. Population density of Meloidogyne spp. juveniles varied between the treatments, and the number of Meloidogyne spp. was significantly decreased in all treatments with fluopyram (FLU and FLU+LCM). All amended treatments (FLU, FLU+LCM, LCM) decreased galling of the roots and had a positive effect on carrot yield. The population of Meloidogyne spp. juveniles increased with the plant growth, regardless of the treatments applied. Fluopyram negatively affected the biodiversity indicating greater disturbance for the nematode community structure in the soil. It can be concluded that fluopyram and liquid chicken manure have nematicidal potential, while liquid chicken manure maintained or enhanced nematode biodiversity.
{"title":"Utjecaj pripravka na bazi fluopirama i tekućega pilećeg stajnjaka na nematode korijenovih kvržica (Meloidogyne spp.) u nasadu mrkve","authors":"Mirjana Brmež, Josipa Puškarić, Emilija Raspudić, Siber Tamara, Dinka Grubišić, Brigita Popović","doi":"10.18047/poljo.25.2.4","DOIUrl":"https://doi.org/10.18047/poljo.25.2.4","url":null,"abstract":"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 liquid chicken manure (FLU+LCM) and liquid chicken manure (LCM) by a random block design in four replicates. Population density of Meloidogyne spp. juveniles varied between the treatments, and the number of Meloidogyne spp. was significantly decreased in all treatments with fluopyram (FLU and FLU+LCM). All amended treatments (FLU, FLU+LCM, LCM) decreased galling of the roots and had a positive effect on carrot yield. The population of Meloidogyne spp. juveniles increased with the plant growth, regardless of the treatments applied. Fluopyram negatively affected the biodiversity indicating greater disturbance for the nematode community structure in the soil. It can be concluded that fluopyram and liquid chicken manure have nematicidal potential, while liquid chicken manure maintained or enhanced nematode biodiversity.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/poljo.25.2.4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49614833","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}
Damir Matošević, D. Kralik, Irena Rapčan, Daria Jovičić
Duckweed is a widespread type of tiny free-floating plants of the flowering class. A typical representative of the family of the cowhide (Lemnaceae) is a large duckweed (Spirodela polyrhiza) and it is very common on Croatian inland waters. Like all other species of duckweeds, it is characterized by the possibility of vegetative and sexual reproduction and very rapid growth. It has the ability to remove nitrogen, phosphorus and some heavy metals from the substrate and is considered a very desirable raw material for biogas production for several reasons. The necessity of reducing environmental pollution of nitrates from agricultural production and the ability to grow water lenses under eutrophic conditions have sparked this research. The primary objective of the study is to determine the possibilities of continuously growing large duckweed at different concentrations of digestates for the purpose of biogas production. The secondary goal is to determine the dependence between the different digestate concentrations used for the duckweed green mass production and the quantity and quality of the biogas obtained through the anaerobic digestion process at thermophilic conditions.
{"title":"The influence of digestate concentration during cultivation on the quality of biogas obtained from the anaerobic digestion of duckweed (Spirodela polyrhiza)","authors":"Damir Matošević, D. Kralik, Irena Rapčan, Daria Jovičić","doi":"10.18047/poljo.25.2.10","DOIUrl":"https://doi.org/10.18047/poljo.25.2.10","url":null,"abstract":"Duckweed is a widespread type of tiny free-floating plants of the flowering class. A typical representative of the family of the cowhide (Lemnaceae) is a large duckweed (Spirodela polyrhiza) and it is very common on Croatian inland waters. Like all other species of duckweeds, it is characterized by the possibility of vegetative and sexual reproduction and very rapid growth. It has the ability to remove nitrogen, phosphorus and some heavy metals from the substrate and is considered a very desirable raw material for biogas production for several reasons. The necessity of reducing environmental pollution of nitrates from agricultural production and the ability to grow water lenses under eutrophic conditions have sparked this research. The primary objective of the study is to determine the possibilities of continuously growing large duckweed at different concentrations of digestates for the purpose of biogas production. The secondary goal is to determine the dependence between the different digestate concentrations used for the duckweed green mass production and the quantity and quality of the biogas obtained through the anaerobic digestion process at thermophilic conditions.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/poljo.25.2.10","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43803977","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}
M. Mazur, Sonja Vila, I. Brkic, A. Jambrović, D. Šimić
The in vivo haploid induction has been widely applied to the maize breeding in recent decades, but it has not been used in the breeding programs in the Republic of Croatia by now. This study's objectives were to examine the haploid induction rates in the Croatian germplasm and to evaluate the properties of the D0 haploids, which are essential for a successful implementation of this method in breeding. The in vivo haploid induction was performed on 11 single-cross hybrids using the Zarodyshevy Marker Krasnodarsky (ZMK) inducer, and colchicine was used as a chromosome doubling agent. Emergence, misclassification rate, colchicine treatment survival, chromosome doubling rate and self-pollination success were examined in the D0 generation. The haploid induction rates ranged from 6.9 to 15.8%, which is consistent with the average induction rates characteristic of the ZMK inducer and the other modern ones. Significant differences were found among the populations of D0 haploids for all tested properties, except for self-pollination success. On average, the misclassification rates were lower, and the seedling survival rates were higher than those reported in other studies, indicating a possibility of a successful application of the doubled haploid method in maize breeding.
{"title":"The development of homozygous maize lines using an in vivo haploid induction in the Croatian germplasm","authors":"M. Mazur, Sonja Vila, I. Brkic, A. Jambrović, D. Šimić","doi":"10.18047/POLJO.25.1.3","DOIUrl":"https://doi.org/10.18047/POLJO.25.1.3","url":null,"abstract":"The in vivo haploid induction has been widely applied to the maize breeding in recent decades, but it has not been used in the breeding programs in the Republic of Croatia by now. This study's objectives were to examine the haploid induction rates in the Croatian germplasm and to evaluate the properties of the D0 haploids, which are essential for a successful implementation of this method in breeding. The in vivo haploid induction was performed on 11 single-cross hybrids using the Zarodyshevy Marker Krasnodarsky (ZMK) inducer, and colchicine was used as a chromosome doubling agent. Emergence, misclassification rate, colchicine treatment survival, chromosome doubling rate and self-pollination success were examined in the D0 generation. The haploid induction rates ranged from 6.9 to 15.8%, which is consistent with the average induction rates characteristic of the ZMK inducer and the other modern ones. Significant differences were found among the populations of D0 haploids for all tested properties, except for self-pollination success. On average, the misclassification rates were lower, and the seedling survival rates were higher than those reported in other studies, indicating a possibility of a successful application of the doubled haploid method in maize breeding.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/POLJO.25.1.3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45242091","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}
Ivana Prakatur, M. Domaćinović, B. Lachner, Z. Steiner, D. Galović, I. Miškulin
The aim of this study was to determine the effect of diet supplementation with propolis and/or bee pollen on the performance indicators of broilers. This experimental study was conducted on 200 Ross 308 broilers equally distributed by sex and divided into five groups. Throughout the whole study the control group of chickens was fed feed mixture. Feed mixture fed to the experimental groups of chickens contained additives (propolis and/or bee pollen, each supplement separately or in combination in a certain proportion). The average values of broilers body weight were significantly higher on 7th (p=0.001), 14th, 21st, 28th, 35th (p<0.001) and 42nd (p=0.002) day of feeding in the experimental groups of broilers compared to the control group. The average values of broilers weight gain were significantly higher on 1st (p<0.001), 2nd (p=0.002), 3rd (p<0.001), 4th (p=0.029) and 5th (p=0.009) week of feeding in the experimental groups of broilers compared to the control group. This study has undoubtedly shown that propolis and bee pollen have significant positive effect on performance indicators of broilers.
{"title":"Performance indicators of broilers fed propolis and bee pollen additive","authors":"Ivana Prakatur, M. Domaćinović, B. Lachner, Z. Steiner, D. Galović, I. Miškulin","doi":"10.18047/POLJO.25.1.10","DOIUrl":"https://doi.org/10.18047/POLJO.25.1.10","url":null,"abstract":"The aim of this study was to determine the effect of diet supplementation with propolis and/or bee pollen on the performance indicators of broilers. This experimental study was conducted on 200 Ross 308 broilers equally distributed by sex and divided into five groups. Throughout the whole study the control group of chickens was fed feed mixture. Feed mixture fed to the experimental groups of chickens contained additives (propolis and/or bee pollen, each supplement separately or in combination in a certain proportion). The average values of broilers body weight were significantly higher on 7th (p=0.001), 14th, 21st, 28th, 35th (p<0.001) and 42nd (p=0.002) day of feeding in the experimental groups of broilers compared to the control group. The average values of broilers weight gain were significantly higher on 1st (p<0.001), 2nd (p=0.002), 3rd (p<0.001), 4th (p=0.029) and 5th (p=0.009) week of feeding in the experimental groups of broilers compared to the control group. This study has undoubtedly shown that propolis and bee pollen have significant positive effect on performance indicators of broilers.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/POLJO.25.1.10","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45299187","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}
M. Jakobović, D. Kiš, K. Aladić, S. Jakobović, Melita Lončarić, S. Jokić
Aim of this study was to monitor the influence of drying method (naturally and chamber drying) and different sample preparation on supercritical CO2 extraction of oil from three grape seed varieties (Graševina, Zweigelt, Cabernet Sauvignon). The highest oil content was obtained from naturally dried screened and washed seeds of red variety Cabernet Sauvignon (14.85%) and lowest from chamber dried screened seeds of white variety Graševina (7.67%). Peroxide value ranged from 0.36 to 1.77 mmol O2/kg oil, free fatty acids 0.28-8.0%, and insoluble impurities 0.05-0.28%. Determined fatty acids were palmitic (6.98-11.58%), stearic (3.82-6.59%), oleic (14.90-19.97%) and linoleic acid (61.82-71.96%) in oil obtained from naturally dried seeds and 6.84-8.68%, 4.12-5.73%, 15.10-20.18% and 67.88-70.76% in oil from chamber dried seeds, respectively. In defatted cakes after supercritical CO2 extraction, protein and fibre content ranged from 8.17 to 9.85% and 34.58 to 43.96%, respectively. According to ANOVA results, sample preparation and drying method had statistically significant influence on grape seed oil extraction.
{"title":"Effect of drying method on supercritical CO2 extraction of grape seed oil","authors":"M. Jakobović, D. Kiš, K. Aladić, S. Jakobović, Melita Lončarić, S. Jokić","doi":"10.18047/POLJO.25.1.12","DOIUrl":"https://doi.org/10.18047/POLJO.25.1.12","url":null,"abstract":"Aim of this study was to monitor the influence of drying method (naturally and chamber drying) and different sample preparation on supercritical CO2 extraction of oil from three grape seed varieties (Graševina, Zweigelt, Cabernet Sauvignon). The highest oil content was obtained from naturally dried screened and washed seeds of red variety Cabernet Sauvignon (14.85%) and lowest from chamber dried screened seeds of white variety Graševina (7.67%). Peroxide value ranged from 0.36 to 1.77 mmol O2/kg oil, free fatty acids 0.28-8.0%, and insoluble impurities 0.05-0.28%. Determined fatty acids were palmitic (6.98-11.58%), stearic (3.82-6.59%), oleic (14.90-19.97%) and linoleic acid (61.82-71.96%) in oil obtained from naturally dried seeds and 6.84-8.68%, 4.12-5.73%, 15.10-20.18% and 67.88-70.76% in oil from chamber dried seeds, respectively. In defatted cakes after supercritical CO2 extraction, protein and fibre content ranged from 8.17 to 9.85% and 34.58 to 43.96%, respectively. According to ANOVA results, sample preparation and drying method had statistically significant influence on grape seed oil extraction.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/POLJO.25.1.12","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41949153","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}
M. Vranić, M. Petek, K. Bošnjak, B. Lazarević, Klaudija Carović Stanko
In this study, near-infrared spectroscopy (NIRS) was used to predict the contents of essential macro- and microelements in common bean (Phaseolus vulgaris L.) accessions of most widespread Croatian landraces. Total of 175 samples were used for the model development by modified partial least square (MPLS), principal component regression (PCR) and partial least square (PLS) techniques. Based on the coefficients of determination (R2), standard error of calibration (SEC) and error of prediction (SEP) the models developed were (i) nearly applicable for nitrogen (N) (0.89, 0.12 and 0.45 respectively), (ii) poor for iron (Fe), cinc (Zn), potassium oxide (K2O) and potassium (K), (iii) usable for phosphorus pentoxide (P2O5), phosphorus (P), phytic acid (PA) and manganese (Mn). The MPLS regression statistics suggested the most accurate models developed comparing with PLS and PCR. It was concluded that a wider set of common bean samples needs to be used for macro- and microelements prediction by NIRS.
{"title":"Prediction of macro- and microelements content in Croatian common bean landraces (Phaseolus vulgaris L.) by NIR spectroscopy","authors":"M. Vranić, M. Petek, K. Bošnjak, B. Lazarević, Klaudija Carović Stanko","doi":"10.18047/POLJO.25.1.7","DOIUrl":"https://doi.org/10.18047/POLJO.25.1.7","url":null,"abstract":"In this study, near-infrared spectroscopy (NIRS) was used to predict the contents of essential macro- and microelements in common bean (Phaseolus vulgaris L.) accessions of most widespread Croatian landraces. Total of 175 samples were used for the model development by modified partial least square (MPLS), principal component regression (PCR) and partial least square (PLS) techniques. Based on the coefficients of determination (R2), standard error of calibration (SEC) and error of prediction (SEP) the models developed were (i) nearly applicable for nitrogen (N) (0.89, 0.12 and 0.45 respectively), (ii) poor for iron (Fe), cinc (Zn), potassium oxide (K2O) and potassium (K), (iii) usable for phosphorus pentoxide (P2O5), phosphorus (P), phytic acid (PA) and manganese (Mn). The MPLS regression statistics suggested the most accurate models developed comparing with PLS and PCR. It was concluded that a wider set of common bean samples needs to be used for macro- and microelements prediction by NIRS.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/POLJO.25.1.7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45265496","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}
Primjena sintetskih fungicida predstavlja još uvijek najučinkovitiju zaštitu od uzročnika biljnih bolesti. Međutim, prekomjerna i dugotrajna uporaba fungicida može dovesti do mnogih štetnih nuspojava, poput štetnoga djelovanja na ljudsko zdravlje, zagađenja okoliša i rezistentnosti patogena. Biološki spojevi koji se nalaze u eteričnim uljima nemaju nikakve štetne učinke na ljude i okoliš, pa mogu biti jedna od značajnih alternativa sintetskim fungicidima. Eterična ulja su sekundarni metaboliti biljaka, a često posjeduju antifungalna, antibakterijska, insekticidna, antivirusna i nematocidna svojstva. Kemijski sastav i biološki učinak eteričnih ulja je složen i ovisi o vrsti biljke, dijelu biljke iz kojega se uzima, podrijetlu, pedoklimatskim uvjetima, vremenu žetve, sezoni berbe i prerade, kao i o uvjetima skladištenja, vrsti patogena, primijenjenoj količini, načinu ekstrakcije i načinu aplikacije. Zbog toga se provode mnoga istraživanja antifungalnoga djelovanja eteričnih ulja na različite fitopatogene in vitro i in vivo ne bi li se pronašla eterična ulja ili njihove kombinacije čiji je antifungalno djelovanje jednako djelovanju sintetskih fungicida.
{"title":"Utjecaj eteričnih ulja na fitopatogene gljive","authors":"Marina Palfi, Karolina Vrandečić, Vesna Popijač, Jasenka Čosić","doi":"10.18047/POLJO.25.1.5","DOIUrl":"https://doi.org/10.18047/POLJO.25.1.5","url":null,"abstract":"Primjena sintetskih fungicida predstavlja još uvijek najučinkovitiju zaštitu od uzročnika biljnih bolesti. Međutim, prekomjerna i dugotrajna uporaba fungicida može dovesti do mnogih štetnih nuspojava, poput štetnoga djelovanja na ljudsko zdravlje, zagađenja okoliša i rezistentnosti patogena. Biološki spojevi koji se nalaze u eteričnim uljima nemaju nikakve štetne učinke na ljude i okoliš, pa mogu biti jedna od značajnih alternativa sintetskim fungicidima. Eterična ulja su sekundarni metaboliti biljaka, a često posjeduju antifungalna, antibakterijska, insekticidna, antivirusna i nematocidna svojstva. Kemijski sastav i biološki učinak eteričnih ulja je složen i ovisi o vrsti biljke, dijelu biljke iz kojega se uzima, podrijetlu, pedoklimatskim uvjetima, vremenu žetve, sezoni berbe i prerade, kao i o uvjetima skladištenja, vrsti patogena, primijenjenoj količini, načinu ekstrakcije i načinu aplikacije. Zbog toga se provode mnoga istraživanja\u0000antifungalnoga djelovanja eteričnih ulja na različite fitopatogene in vitro i in vivo ne bi li se pronašla eterična ulja ili njihove kombinacije čiji je antifungalno djelovanje jednako djelovanju sintetskih fungicida.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18047/POLJO.25.1.5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42654336","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}
Dinko Jelkić, N. Vukajlovic, R. Lužaić, S. Blažetić, S. Ozimec, A. Opačak
Distribution of the European mudminnow, Umbra krameri, Walbaum 1792, in Croatia is scarce with only few confirmed localities. In order to confirm presence of the European mudminnow in amelioration canal network along the Drava River an electrofishing was conducted in the small Mlinski canal. Ten specimen of European mudminnow were caught During sampling. Using ImageJ software a truss network was constructed between landmark points on photographs of caught specimens. Total body lengths of caught European mudminnow ranged from 61 to 100 mm (72.00±11.52 mm) whereas standard one ranged from 52 to 85 mm (60.30±10.08 mm). Body weight were relatively small ranging from 1.81 to 7.59 g (3.80±1.89 g), while the Fulton condition factor ranged from 0.76 to 1.23 (0.96±0.15). This new locality of the European mudminnow is situated about 50 km downstream from the last confirmed site in Croatia.
{"title":"A new finding of the European mudminnow (Umbra krameri, Walbaum 1792) in Croatia","authors":"Dinko Jelkić, N. Vukajlovic, R. Lužaić, S. Blažetić, S. Ozimec, A. Opačak","doi":"10.18047/POLJO.25.1.9","DOIUrl":"https://doi.org/10.18047/POLJO.25.1.9","url":null,"abstract":"Distribution of the European mudminnow, Umbra krameri, Walbaum 1792, in Croatia is scarce with only few confirmed localities. In order to confirm presence of the European mudminnow in amelioration canal network along the Drava River an electrofishing was conducted in the small Mlinski canal. Ten specimen of European mudminnow were caught During sampling. Using ImageJ software a truss network was constructed between landmark points on photographs of caught specimens. Total body lengths of caught European mudminnow ranged from 61 to 100 mm (72.00±11.52 mm) whereas standard one ranged from 52 to 85 mm (60.30±10.08 mm). Body weight were relatively small ranging from 1.81 to 7.59 g (3.80±1.89 g), while the Fulton condition factor ranged from 0.76 to 1.23 (0.96±0.15). This new locality of the European mudminnow is situated about 50 km downstream from the last confirmed site in Croatia.","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.25.1.9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42478994","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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