M. Jurišić, Dorijan Radočaj, I. Plaščak, Daria Galić Subašić, D. Petrović
This study investigated a crop and soil classification applying the Random Forest machine learning algorithm based on the red-green-blue (RGB) and multispectral sensor imaging deploying an unmanned aerial vehicle (UAV). The study area covered two 10 x 10 m subsets of a maize-sown agricultural parcel near Koška. The highest overall accuracy was obtained in the combination of the red edge (RE), near-infrared (NIR), and normalized difference vegetation index (NDVI) in both subsets, with a 99.8% and 91.8% overall accuracy, respectively. The conducted analysis proved that the RGB camera obtained sufficient accuracy and was an acceptable solution to the soil and vegetation classification. Additionally, a multispectral camera and spectral analysis allowed for a more detailed analysis, primarily of the spectrally similar areas. Thus, this procedure represents a basis for both the crop density calculation and weed detection while deploying an unmanned aerial vehicle. To ensure crop classification effectiveness in practical application, it is necessary to further integrate the weed classes in the current vegetation class and separate them into crop and weed classes.
{"title":"THE EVALUATION OF THE RGB AND MULTISPECTRAL CAMERA ON THE UNMANNED AERIAL VEHICLE (UAV) FOR THE MACHINE LEARNING CLASSIFICATION OF MAIZE","authors":"M. Jurišić, Dorijan Radočaj, I. Plaščak, Daria Galić Subašić, D. Petrović","doi":"10.18047/poljo.28.2.10","DOIUrl":"https://doi.org/10.18047/poljo.28.2.10","url":null,"abstract":"This study investigated a crop and soil classification applying the Random Forest machine learning algorithm based on the red-green-blue (RGB) and multispectral sensor imaging deploying an unmanned aerial vehicle (UAV). The study area covered two 10 x 10 m subsets of a maize-sown agricultural parcel near Koška. The highest overall accuracy was obtained in the combination of the red edge (RE), near-infrared (NIR), and normalized difference vegetation index (NDVI) in both subsets, with a 99.8% and 91.8% overall accuracy, respectively. The conducted analysis proved that the RGB camera obtained sufficient accuracy and was an acceptable solution to the soil and vegetation classification. Additionally, a multispectral camera and spectral analysis allowed for a more detailed analysis, primarily of the spectrally similar areas. Thus, this procedure represents a basis for both the crop density calculation and weed detection while deploying an unmanned aerial vehicle. To ensure crop classification effectiveness in practical application, it is necessary to further integrate the weed classes in the current vegetation class and separate them into crop and weed classes.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45254442","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}
Z. Antunović, B. Mioč, Željka Klir Šalavardić, I. Širić, V. Držaić, V. Šerić, S. Mandić, J. Novoselec
The aim of the present study was to determine the acid-base balance in the blood of the Lacaune sheep during different lactation stages. Thirty lactating Lacaune sheep were involved in the research, and were monitored in the early (day 60), medium (day 120), and late lactation stages (day 180). The following parameters were determined in the blood plasma: pH, partial pressure of carbon dioxide – pCO2, partial pressure of oxygen – pO2, total pressure of carbon dioxide – tCO2, oxygen saturation – sO2, actual base excess Cbase – B, standard base excess Cbase – Ecf and electrolytes (Na+, K+, Ca2+, Cl- and HCO3- – bicarbonate), while total proteins – TP and albumin ALB were determined in the serum. Also, strong ion difference - SID, z value, anion gap - AG, weak anions, and cations - ATOTtp and ATOTalb, strong ion gap - SIG, unmeasured anions – XA and globulin concentrations were calculated. A significant effect of the lactation stage on most of the acid-base parameters in the blood of the Lacaune sheep was determined, except for pCO2, Cl-, z values and the SID. A significant increase of pO2, sO2, ATOTtp, ATOTalb, AG, SIGalb, SIGtp, XA, Na+, total proteins and albumins, as well as the decreased concentrations of K+ and Ca2+, were determined in the blood of the Lacaune sheep during lactation. During the medium stage of lactation, significant changes were determined in most of the acid-base parameters in the blood of the Lacaune sheep when compared to the other stages. A lactation stage may significantly affect the acid-base balance parameters in the blood of the Lacaune sheep, although the calculations of SIG, base excess (BE), and unmeasured anion (XA) values should also be included for the obtainment of a more comprehensive picture of the acid-base balance.
{"title":"THE CHANGES IN THE BLOOD’S ACID-BASE BALANCE OF THE LACAUNE SHEEP DURING DIFFERENT LACTATION STAGES","authors":"Z. Antunović, B. Mioč, Željka Klir Šalavardić, I. Širić, V. Držaić, V. Šerić, S. Mandić, J. Novoselec","doi":"10.18047/poljo.28.2.8","DOIUrl":"https://doi.org/10.18047/poljo.28.2.8","url":null,"abstract":"The aim of the present study was to determine the acid-base balance in the blood of the Lacaune sheep during different lactation stages. Thirty lactating Lacaune sheep were involved in the research, and were monitored in the early (day 60), medium (day 120), and late lactation stages (day 180). The following parameters were determined in the blood plasma: pH, partial pressure of carbon dioxide – pCO2, partial pressure of oxygen – pO2, total pressure of carbon dioxide – tCO2, oxygen saturation – sO2, actual base excess Cbase – B, standard base excess Cbase – Ecf and electrolytes (Na+, K+, Ca2+, Cl- and HCO3- – bicarbonate), while total proteins – TP and albumin ALB were determined in the serum. Also, strong ion difference - SID, z value, anion gap - AG, weak anions, and cations - ATOTtp and ATOTalb, strong ion gap - SIG, unmeasured anions – XA and globulin concentrations were calculated. A significant effect of the lactation stage on most of the acid-base parameters in the blood of the Lacaune sheep was determined, except for pCO2, Cl-, z values and the SID. A significant increase of pO2, sO2, ATOTtp, ATOTalb, AG, SIGalb, SIGtp, XA, Na+, total proteins and albumins, as well as the decreased concentrations of K+ and Ca2+, were determined in the blood of the Lacaune sheep during lactation. During the medium stage of lactation, significant changes were determined in most of the acid-base parameters in the blood of the Lacaune sheep when compared to the other stages. A lactation stage may significantly affect the acid-base balance parameters in the blood of the Lacaune sheep, although the calculations of SIG, base excess (BE), and unmeasured anion (XA) values should also be included for the obtainment of a more comprehensive picture of the acid-base balance.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47404143","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}
Nikolina Kajić, A. Jozinović, Z. Lončarić, Đ. Ačkar, D. Šubarić, D. Horvat, Marija Kovačević, Hrvoje Heffer, J. Babić
The aim of this paper was to investigate the influence of Zn‐ and Se‐fortified wheat flour addition to the corn grits at 90:10, 80:20, 70:30, 60:40 ratios on the hardness, fracturability, expansion ratio, bulk density, color, and sensory attributes of the extrudates. Extrusion was performed at three temperature profiles: 140/170/170 °C, 150/180/180 °C, and 160/190/190 °C. With an increase in the proportion of Zn‐ and Se‐ fortified wheat flour and temperature increase, all observed physical characteristics of extrudates decreased. The lightness of all the samples increased after the extrusion. The total color change increased with the addition of Zn‐ and Se‐fortified wheat flour. Sensory characteristics showed that the samples with a lower percentage of added Zn‐ and Se‐fortified wheat flour had better scores and acceptability, compared to the samples with a higher fortification ratio.
{"title":"TEXTURAL AND SENSORY CHARACTERISTICS OF EXTRUDED CORN SNACKS WITH THE ADDITION OF ZINC‐ AND SELENIUM‐BIOFORTIFIED WHEAT","authors":"Nikolina Kajić, A. Jozinović, Z. Lončarić, Đ. Ačkar, D. Šubarić, D. Horvat, Marija Kovačević, Hrvoje Heffer, J. Babić","doi":"10.18047/poljo.28.2.3","DOIUrl":"https://doi.org/10.18047/poljo.28.2.3","url":null,"abstract":"The aim of this paper was to investigate the influence of Zn‐ and Se‐fortified wheat flour addition to the corn grits at 90:10, 80:20, 70:30, 60:40 ratios on the hardness, fracturability, expansion ratio, bulk density, color, and sensory attributes of the extrudates. Extrusion was performed at three temperature profiles: 140/170/170 °C, 150/180/180 °C, and 160/190/190 °C. With an increase in the proportion of Zn‐ and Se‐ fortified wheat flour and temperature increase, all observed physical characteristics of extrudates decreased. The lightness of all the samples increased after the extrusion. The total color change increased with the addition of Zn‐ and Se‐fortified wheat flour. Sensory characteristics showed that the samples with a lower percentage of added Zn‐ and Se‐fortified wheat flour had better scores and acceptability, compared to the samples with a higher fortification ratio.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43367801","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}
In this paper, authors summarise studies refferering to enrichment of breast and thigh muscles with carnosine that has an important function in physiological processes. Research has shown that carnosine improves quality of chicken meat. By adding amino acids β-alanine and L-histidine in chickens’ feed, carnosine synthesizes in skeletal muscles, brain, heart muscle and olfactory receptor cells. It has been determined that the content of carnosine depends on the type of muscle (white or dark meat), broiler genotype as well as sex. Chicken meat is sensitive to oxidation processes, but lipid oxidation can be efficiently prevented by enriching meat with carnosine.
{"title":"CARNOSINE – POLYFUNCTIONAL BIOLOGICALLY ACTIVE INGREDIENT","authors":"G. Kralik, Z. Kralik, K. Gvozdanović","doi":"10.18047/poljo.28.2.11","DOIUrl":"https://doi.org/10.18047/poljo.28.2.11","url":null,"abstract":"In this paper, authors summarise studies refferering to enrichment of breast and thigh muscles with carnosine that has an important function in physiological processes. Research has shown that carnosine improves quality of chicken meat. By adding amino acids β-alanine and L-histidine in chickens’ feed, carnosine synthesizes in skeletal muscles, brain, heart muscle and olfactory receptor cells. It has been determined that the content of carnosine depends on the type of muscle (white or dark meat), broiler genotype as well as sex. Chicken meat is sensitive to oxidation processes, but lipid oxidation can be efficiently prevented by enriching meat with carnosine.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46438315","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}
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 depth, DT — disking up to 8-12 cm depth, LT — loosening up to 35 cm depth, and NT — no-tillage. The experimental design was a randomised block design in four repetitions, in which the basic TS plot amounted to 540 m2. Soil sampling for 0-30 cm soil layer was performed prior to setting up the experiment and subsequent to the three seasons with a total of 320 soil samples. Chemical analysis was performed according to standard pedological procedures. Economic indicators were calculated using economic equations and standards, whereas statistical analysis was performed with SAS 9.3 and Microsoft Excel 2016. Generated results indicate that the expressed accumulation of phosphorus and potassium appeared with a distinct vertical stratification in the systems with shallower tillage or no-tillage. At the same time, these TSs ensured the soil organic matter and soil fertility preservation. A conservable agricultural production of reduced soil tillage systems has its efficiency and vigor while providing soil degradation.
{"title":"SOIL TILLAGE SYSTEMS IN THE FUNCTION OF ECOLOGICAL SUSTAINABILITY","authors":"M. Stošić, B. Popović, L. Ranogajec","doi":"10.18047/poljo.28.2.4","DOIUrl":"https://doi.org/10.18047/poljo.28.2.4","url":null,"abstract":"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 depth, DT — disking up to 8-12 cm depth, LT — loosening up to 35 cm depth, and NT — no-tillage. The experimental design was a randomised block design in four repetitions, in which the basic TS plot amounted to 540 m2. Soil sampling for 0-30 cm soil layer was performed prior to setting up the experiment and subsequent to the three seasons with a total of 320 soil samples. Chemical analysis was performed according to standard pedological procedures. Economic indicators were calculated using economic equations and standards, whereas statistical analysis was performed with SAS 9.3 and Microsoft Excel 2016. Generated results indicate that the expressed accumulation of phosphorus and potassium appeared with a distinct vertical stratification in the systems with shallower tillage or no-tillage. At the same time, these TSs ensured the soil organic matter and soil fertility preservation. A conservable agricultural production of reduced soil tillage systems has its efficiency and vigor while providing soil degradation.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43836186","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}
G. Krizmanić, T. Čupić, M. Tucak, D. Horvat, Andrija Brkić, Ivica Beraković, M. Marković
One of the most important tasks of breeders is to improve the properties of breeding material (varieties, lines) and to create a new genetic variability. The study goals were as follows: during two consecutive years (2019 and 2020), to evaluate the agronomic value of nine newly created spring breeding lines of fodder pea, as well as to evaluate the stability of yield components and to select the most promising genotypes for further breeding. The results of the study demonstrate that there are significant differences between the tested genotypes in the tested environments for most of the analyzed properties and that the variation of genotypes within the identified sources of experimental variation exerts the greatest influence . Based on the investigated property values, subsequent to stability evaluation the desirable genotypes L - OSMBK 1, L - OSMBK 3 – for the grain/plant yield L - OSMBK 1, L - OSMBK 8, L - OSMBK 3, L - OSMBK 9 – for the mass of 1,000 grains, and L – OSMBK 9 – for plant height were identified as the stable genotypes, with a high breeding and agronomic properties.
{"title":"AGRONOMIC VALUE ASSESSMENT AND YIELD COMPONENT STABILITY OF NEWLY CREATED SPRING FIELD PEA LINES (Pisum sativum L.)","authors":"G. Krizmanić, T. Čupić, M. Tucak, D. Horvat, Andrija Brkić, Ivica Beraković, M. Marković","doi":"10.18047/poljo.28.2.2","DOIUrl":"https://doi.org/10.18047/poljo.28.2.2","url":null,"abstract":"One of the most important tasks of breeders is to improve the properties of breeding material (varieties, lines) and to create a new genetic variability. The study goals were as follows: during two consecutive years (2019 and 2020), to evaluate the agronomic value of nine newly created spring breeding lines of fodder pea, as well as to evaluate the stability of yield components and to select the most promising genotypes for further breeding. The results of the study demonstrate that there are significant differences between the tested genotypes in the tested environments for most of the analyzed properties and that the variation of genotypes within the identified sources of experimental variation exerts the greatest influence . Based on the investigated property values, subsequent to stability evaluation the desirable genotypes L - OSMBK 1, L - OSMBK 3 – for the grain/plant yield L - OSMBK 1, L - OSMBK 8, L - OSMBK 3, L - OSMBK 9 – for the mass of 1,000 grains, and L – OSMBK 9 – for plant height were identified as the stable genotypes, with a high breeding and agronomic properties.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43937272","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 is to investigate the effects of different rates of N, Mg and Fe applications on the mineral content of parsley leaves. The experiment was carried out in a greenhouse according to the randomized plot design with three replications. Seven N, Mg and Fe dose treatments were designed as 130, 160, 190, 220, 250, 280 and 310 kg per ha N as ammonium nitrate (33% N), 40, 80, 120, 160, 200, 240 and 280 kg per ha Mg as magnesium sulphate (16% MgO) and 8, 16, 24, 32, 40, 48 and 56 Fe kg per ha as ferrous sulphate (20% Fe). The treatments did not significantly affect phosphorus concentrations in parsley leaves. The nitrogen uptake of the plant increased in all three element applications and the highest N, K and Ca values were determined in nitrogen fertilizer applications. The nitrate amount in the leaves also increased depending on the increasing N rates. The results indicate that the most effective fertilizer in the nutrition of parsley is nitrogen fertilizers and nitrogen doses up to 310 kg per ha did not increase the nitrate amount in parsley above the permissible level.
{"title":"THE EFFECT OF NITROGEN, MAGNESIUM AND IRON APPLICATIONS ON THE NUTRIENT CONTENT OF PARSLEY (Petroselinum crispum)","authors":"B. Yağmur, B. Okur, N. Okur","doi":"10.18047/poljo.28.2.1","DOIUrl":"https://doi.org/10.18047/poljo.28.2.1","url":null,"abstract":"The aim of this study is to investigate the effects of different rates of N, Mg and Fe applications on the mineral content of parsley leaves. The experiment was carried out in a greenhouse according to the randomized plot design with three replications. Seven N, Mg and Fe dose treatments were designed as 130, 160, 190, 220, 250, 280 and 310 kg per ha N as ammonium nitrate (33% N), 40, 80, 120, 160, 200, 240 and 280 kg per ha Mg as magnesium sulphate (16% MgO) and 8, 16, 24, 32, 40, 48 and 56 Fe kg per ha as ferrous sulphate (20% Fe). The treatments did not significantly affect phosphorus concentrations in parsley leaves. The nitrogen uptake of the plant increased in all three element applications and the highest N, K and Ca values were determined in nitrogen fertilizer applications. The nitrate amount in the leaves also increased depending on the increasing N rates. The results indicate that the most effective fertilizer in the nutrition of parsley is nitrogen fertilizers and nitrogen doses up to 310 kg per ha did not increase the nitrate amount in parsley above the permissible level.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41940940","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}
Dalibor Đud, V. Gantner, M. Đidara, M. Pavlić, M. Šperanda
Animal welfare (AW) is a term denoting how the animals are coping with the conditions in which they live. A precise welfare assessment assumes a multidisciplinary approach, and modern evaluation protocol incorporates both the animal-based and non-animal-based measures. Due to the different welfare score classes, this study’s objective was to determine the variability of biochemical and hematological parameters, as well as the body condition score. The study was conducted involving 145 Holstein cows, randomly chosen from the six commercial dairy cow farms. The dairy cows’ welfare assessment checklist consisted of seventy items, pursuant to the CReNBA protocol. The biochemical parameters in blood and the milk plasma were determined using the Beckman Coulter AU400 (Beckman Coulter, FRG) automatic clinical chemistry analyzer. The obtained results indicate that the lower albumin, triglyceride, iron, and calcium values were detected in the cows bred on the farms that were ranked lower concerning the farm management and farm infrastructure levels. In the milk plasma, the concentration of albumins was higher (P<0.05) on the farms that were ranked lower concerning the farm management, infrastructure level, and total score scale. Iron concentration was higher (P<0.05) in the cows from the farms ranked lower concerning farm infrastructure and on the farms that were ranked higher concerning the animal level. The erythrocyte sedimentation rate was higher on the farms with worse marks on the farm infrastructure level and total AW score.
{"title":"BIOCHEMICAL AND HEMATOLOGICAL PARAMETERS AND BODY CONDITION SCORE OF HOLSTEIN COWS UNDER DIFFERENT WELFARE CONDITIONS","authors":"Dalibor Đud, V. Gantner, M. Đidara, M. Pavlić, M. Šperanda","doi":"10.18047/poljo.28.2.9","DOIUrl":"https://doi.org/10.18047/poljo.28.2.9","url":null,"abstract":"Animal welfare (AW) is a term denoting how the animals are coping with the conditions in which they live. A precise welfare assessment assumes a multidisciplinary approach, and modern evaluation protocol incorporates both the animal-based and non-animal-based measures. Due to the different welfare score classes, this study’s objective was to determine the variability of biochemical and hematological parameters, as well as the body condition score. The study was conducted involving 145 Holstein cows, randomly chosen from the six commercial dairy cow farms. The dairy cows’ welfare assessment checklist consisted of seventy items, pursuant to the CReNBA protocol. The biochemical parameters in blood and the milk plasma were determined using the Beckman Coulter AU400 (Beckman Coulter, FRG) automatic clinical chemistry analyzer. The obtained results indicate that the lower albumin, triglyceride, iron, and calcium values were detected in the cows bred on the farms that were ranked lower concerning the farm management and farm infrastructure levels. In the milk plasma, the concentration of albumins was higher (P<0.05) on the farms that were ranked lower concerning the farm management, infrastructure level, and total score scale. Iron concentration was higher (P<0.05) in the cows from the farms ranked lower concerning farm infrastructure and on the farms that were ranked higher concerning the animal level. The erythrocyte sedimentation rate was higher on the farms with worse marks on the farm infrastructure level and total AW score.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42452697","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. Kristić, Sanja Grubišić, Andrijana Rebekić, J. Rupčić, T. Teklić, M. Lisjak
Due to its nutritional value, wheatgrass (Triticum aestivum L.) is considered to be a functional food, becoming increasingly popular as a supplement to the people’s quotidian diet. The study aimed to determine the influence of the number of cuttings and cultivars on the total antioxidant activity (DPPH), the content of chloroplast pigments, vitamin C, phenols, and flavonoids in the wheatgrass juice. Two genotypes of wheatgrass, T. aestivum ssp. aestivum (variety Katarina) and T. aestivum ssp. sphaerococcum, respectively, were cut twice during the experiment. In both cuttings, the genotype significantly differed in the flavonoid level and antioxidant activity, while the number of cuttings influenced the content of phenols, vitamin C, and antioxidant activity in the wheatgrass juice. T. sphaerococcum had a higher concentration of flavonoids and a significantly lower antioxidant activity when compared to the Katarina wheat variety. On an average, the first cut implicated an increased content of phenols and vitamin C concerning both genotypes, followed by a higher antioxidant value. In the Katarina variety, a significantly higher phenol content and antioxidant activity was detected in the first cut. In the T. Sphaerococcum, a decrease in the total content of the examined antioxidants was apparent in the second cut.
{"title":"THE INFLUENCE OF VARIETY AND CUTTING ON THE WHEATGRASS (Triticum aestivum L.) FUNCTIONAL PROPERTIES","authors":"M. Kristić, Sanja Grubišić, Andrijana Rebekić, J. Rupčić, T. Teklić, M. Lisjak","doi":"10.18047/poljo.28.2.5","DOIUrl":"https://doi.org/10.18047/poljo.28.2.5","url":null,"abstract":"Due to its nutritional value, wheatgrass (Triticum aestivum L.) is considered to be a functional food, becoming increasingly popular as a supplement to the people’s quotidian diet. The study aimed to determine the influence of the number of cuttings and cultivars on the total antioxidant activity (DPPH), the content of chloroplast pigments, vitamin C, phenols, and flavonoids in the wheatgrass juice. Two genotypes of wheatgrass, T. aestivum ssp. aestivum (variety Katarina) and T. aestivum ssp. sphaerococcum, respectively, were cut twice during the experiment. In both cuttings, the genotype significantly differed in the flavonoid level and antioxidant activity, while the number of cuttings influenced the content of phenols, vitamin C, and antioxidant activity in the wheatgrass juice. T. sphaerococcum had a higher concentration of flavonoids and a significantly lower antioxidant activity when compared to the Katarina wheat variety. On an average, the first cut implicated an increased content of phenols and vitamin C concerning both genotypes, followed by a higher antioxidant value. In the Katarina variety, a significantly higher phenol content and antioxidant activity was detected in the first cut. In the T. Sphaerococcum, a decrease in the total content of the examined antioxidants was apparent in the second cut.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42521145","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 western corn rootworm (WCR) (Diabrotica virgifera virgifera LeConte) is one of the most important maize pests. The research was conducted in Gorjani during 2020, with the aim of determining how repeated maize sowing affects the occurrence and abundance of WCR, the level of root damage, plant tolerance, and yield. The OS 378 maize hybrid was sown in two treatments (repeated sowing and monoculture for three years). A damage caused by larval feeding was determined by the root damage, and plant tolerance was determined by the root size and secondary root regrowth. The imago flight was monitored by the yellow sticky boards on both investigated plots. The average number of adults per day and trap in repeated sowing amounted to 1.07 and to 0.99 in the three-year monoculture, respectively. The root damage was rated by an average of 0.75 (repeated sowing) and 1.25 (three-year monoculture). The root size was rated by an average of 2.50 (repeated sowing) and 3.70 (three-year monoculture), and the average increase in secondary root was averaged the values of 3.20 (repeated sowing) and 3.05 (three-year monoculture), respectively. The higher root rates in maize cultivation in a three-year monoculture indicate that an additional monoculture year may cause a greater damage. The maize yield in a repeated sowing was higher by 2.53 t/ha when compared to the three-year monoculture. It is recommended to avoid further maize sowing on these plots and to respect the perennial crop rotation.
{"title":"THE HARMFULNESS OF WESTERN CORN ROOTWORM (Diabrotica virgifera virgifera LeConte) UNDER THE CONDITIONS OF PERENNIAL REPEATED MAIZE SOWING","authors":"Ivan Lović, A. Sarajlić, E. Raspudić","doi":"10.18047/poljo.28.2.6","DOIUrl":"https://doi.org/10.18047/poljo.28.2.6","url":null,"abstract":"The western corn rootworm (WCR) (Diabrotica virgifera virgifera LeConte) is one of the most important maize pests. The research was conducted in Gorjani during 2020, with the aim of determining how repeated maize sowing affects the occurrence and abundance of WCR, the level of root damage, plant tolerance, and yield. The OS 378 maize hybrid was sown in two treatments (repeated sowing and monoculture for three years). A damage caused by larval feeding was determined by the root damage, and plant tolerance was determined by the root size and secondary root regrowth. The imago flight was monitored by the yellow sticky boards on both investigated plots. The average number of adults per day and trap in repeated sowing amounted to 1.07 and to 0.99 in the three-year monoculture, respectively. The root damage was rated by an average of 0.75 (repeated sowing) and 1.25 (three-year monoculture). The root size was rated by an average of 2.50 (repeated sowing) and 3.70 (three-year monoculture), and the average increase in secondary root was averaged the values of 3.20 (repeated sowing) and 3.05 (three-year monoculture), respectively. The higher root rates in maize cultivation in a three-year monoculture indicate that an additional monoculture year may cause a greater damage. The maize yield in a repeated sowing was higher by 2.53 t/ha when compared to the three-year monoculture. It is recommended to avoid further maize sowing on these plots and to respect the perennial crop rotation.","PeriodicalId":44286,"journal":{"name":"Poljoprivreda","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46163928","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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