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The impact of soil amendment of super absorbent polymer on grain yield and yield components of corn in center of Iran
No full textCorn is one of the most important cereal crop grown in Iran. A complete randomized design with four replications was used to analysis the influence of soil amendment of super absorbent polymer on grain yield and yield components of corn in center of Iran
in 2016 and 2017. Treatments with super absorbent polymer were 0 kg/ha (S1), 15 kg/ha (S2), 30 kg/ha (S3), and treatments with fertilizers were 50% (F1), 75% (F2), 100% (F3), which could be combined into nine pots. The influence of super absorbent polymer was significant on spike weight in 2017, above-ground biomass in 2016, one hundred seed
weight in 2016, and grain yield in 2017. There was no meaningful influence of super absorbent polymer on spike weight in 2016, above-ground biomass in 2017, 100 seed weight in 2017 and grain yield in 2016. Fertilizer treatments had significant influence on spike weight, above-ground biomass, 100 seed weight, and grain yield in both 2016 and 2017. The interaction between SAP and fertilizers had significant effect on above ground biomass in 2017. In both years, the highest spike weight, above ground biomass, 100 seed weight and grain yield was related to S3 (30 kg/ha), followed by S2 (15 kg/ha) and S1 (0 kg/ha), respectively. 100% application of fertilizer (F3) had obtained the maximum spike weight, above ground biomass, 100 seed weight and grain in both 2016 and 2017.
Our data have shown that the applied SAP had a remarkable effect on corn growth and yield under different fertilization treatments, and its application of 30 kg/ha gave the best corn production index
Allelopathic effect of Ficus benjamina leaf extract, litter, and mulch on germination and growth of sunflower
No full textAllelopathy is an important
biological process, which has direct or
indirect effects on the germination and
growth potentials of plants. Awareness
about the allelopathic properties of plants
which prevail in agricultural systems can
help growers to amend crop cultivation
patterns accordingly. In this study, we
evaluated the allelopathic effects of Ficus
benjamina on germination and early
seedling growth of four hybrids of
sunflower (Oliver, Parsun-3, SFH-80 and
NK- S- 278). Ethanolic and hot-water
aqueous extracts from leaves, while litter
and mulches of the test allelopathic plant
significantly reduced germination, radicle
and hypocotyle growth of sunflower.
Germination percentage was drastically
reduced in all the four sunflower hybrids
by ethanolic, hot-water and litter extracts;
however, compared to control, mulching
assay significantly increased germination
in hybrids Oliver (76%), Parsun-3 (42%),
SFH-80 (78%) and NK-S-278 (30%) at 2,
4, 8 and 12g extract concentration,
respectively. Hypocotyle and radicle
length of test hybrids were significantly
reduced in each assay type. Among tested
assays, ethanolic extracts revealed more
drastic effects on the studied parameters
than hot-water, litter, and mulching.
Sunflower hybrid NK-S-278 was more
severely affected, while Parsun-3
exhibited resistance to the allelopathic
stress. Inhibitory effects were more
prominent with increasing concentration
of the extracts. The order of the phytotoxic
effects of tested bioassays was ethanolic
extract˃ hot-water˃ litter˃ mulching.
The study suggested that Ficus leaves
may possess potent allelochemicals with
growth inhibitory effects on sunflower
seedlings. It is suggested that further
study might be required to check the
allelopathic effect of Ficus benjamina on
germination and growth of these
sunflower hybrids in field conditions
Study on luteal tissue treatment in angus cows with natural and synthetic analogue of prostaglandins
No full textThe objective of this study was to evaluate the effects of prostaglandins (natural and synthetic analogues) on estrous synchronization in beef cows. The study was carried out between May – August 2019 in a private unit in Timis County, and involved 54 Aberdeen Angus cows diagnosed with ovarian luteal tissue: corpus luteum (n=36 cows), cystic corpus luteum (n= 8 cows) and luteal cysts (n=10 cows). Two products were used for the treatment of this pathology: PGF Veyx Forte (n=27 cows) and Enzaprost (n=27 cows). The interval between hormonal treatment and the onset of estrous was ranging from 48-96 hours. In this trial 83.33% of the animals expressed signs of estrous. In the present experiment the conception rate after the artificial insemination was 71.11%
The sugar beet production forecast in the Republic of Moldova
No full textThe production of the sugar beet in the Republic of Moldova (RM) in the last ten years decreased considerably. The world and Moldovan sugar consumption is increasing, therefore making sugar beet an important crop for sugar production. Sugar beet production, as one of the main industrial crops with a significant share in earnings, has an
impact on the manufacturing sector of the country. Based on the crop significance, the scope of this research is to f production (Yt) in the RM. The research was conducted by the help of data provided by the National Bureau of Statistics. Six time series models were run to find the best solution for Yt forecast. Three of the models were considered the
most appropriate. These are: Exponential function trend, Quadratic function trend and Holt’s method. The AIC (Akaike Information Criterion), SBC (Schwarz Bayesian Criterion) and R2 (coefficient of determination) explained that 77,5% of data showed to be optimal for Yt forecast in Holt’s method. As a result, the forecast was based on Holt’s methodology for time series with trend. Consequently, it was found that Yt will decrease by approximately 15 thousand tonnes by 2022. However, as the data is based on past assumptions, there still exists hope that the production of sugar beet will increase. The same is considered for the average yield, which at the moment is twice lower than in the European Union countries
Morphological characteristics and seed germination improvement of two ecotypes of Astragalus armatus Willd. subsp. armatus in Algeria
No full textAstragalus armatus Willd.
subsp. armatus is an endemic shrub of the
Northern Africa. Its cultivation and
domestication are very limited because of
difficulty with seed germination and
establishment. In this study, we investigated
some plant morphological characteristics
in real time and in situ (leaves, fruit
and seeds) of different ecotypes of
A. armatus, collected from two sites in
Algeria (Arid Steppe of Aïn Naga and
Condorcet Mountain), which elevation
and climate data are very different.
Moreover, the role played by the seed
coat in seed dormancy of these two
different populations was tested by the
effects of the pretreatment and its duration
on the performance of seed germination,
by considering the final germination
percentage (FGP) and the mean germination
time (MGT). These parameters are
estimated for 10 days in Petri dishes and
stored in darkness at (25°C). Pre-sowing
treatments included immersion in
concentrated sulphuric acid for 30, 60 and
90 min, and immersion in hot water
(100°C) for 10 min. Statistical analysis
showed that the treatment and the ecotypes
effects on both FGP and MGT were
highly significant (p< 0.0001). Untreated
seeds of both ecotypes of A. armatus
failed to germinate (except for a few of
Condorcet Mountain ecotypes). For both
populations, the most effective treatment
was immersion in sulphuric acid for
60 min for the ecotype of Arid Steppe of
Aïn Naga, and only 30 min for Condorcet
Mountain. An excellent germinative
strength is characterized by a higher FGP
and a reduced MGT. The morphological
characteristic and seed germination could
be attributed to intraspecific variations
resulting from the natural selection of the
same species
Effects of storage temperature, duration and inoculation methods on Bradyrhizobium japonicum growth with soybean
No full textThe positive effect of root-nodulating strains of Bradyrhizobium spp in soybean in terms of biological nitrogen fixation and plant growth and development is still a main focus in the present. According to the literature, a concentration of 105 -106 bacteria on the seed, will guarantees that the root can be infected during the germination process, and in this
way will achieve early nodulation. In this research the effects of storage temperature, duration and inoculation methods on the survival of Bradyrhizobium japonicum growth on soybean seeds and the performance of soybean bacterial inoculant on seeds under field conditions were determinate. The results showed that the storage of the inoculated seeds
at low temperature (5-10°C) can assure a very good root infection in order to obtain a higher nodule number and after 90 days, whether the inoculation was done in station or factory. The registered results showed values which ranged from 0.03*105 to 5.06*105 CFU/seed. In case of the performance of soybean bradyrhizobia inoculants on seeds under field conditions we determined that from the soybean tap roots, the highest number of nodules was 138, while the lowest number was 42 nodules. Regarding the total weight of the nodules prevailed from the tap roots, the highest registered values was 4748.0 mg. In case of secondary roots, the highest number of nodules was 353, while the lowest
number was 103
Influenţa tratamentelor enzimatice asupra calităţii vinurilor Sauvignon blanc
No full textEnzyme preparations are currently used in modern wine technology for diverse biotransformation reactions from pre-fermentation to fermentation, post-fermentation and wine aging stage. Industrial enzymes gives quantitative (increased juice yields) and qualitative conveniences (improved color extraction and flavor enhancement) and processing benefits (shorter maceration, settling and filtration time).This studyinvestigates the effects of enzyme treatments on physical-chemical, chromatic and organolepticparameters of white wines obtained in Iasi vineyard.The grapes representing Sauvignon blancvariety were processed in autumn 2018by the classic method for obtaining white wines. For this study, five commercial enzymeswith different activities were used, such as β-glycosidaseand pectinases, thus contributing to release aroma compounds, and six variants were obtained.Laboratory analysis of the wine samples was performed according to International Organization of Vine and Wine. Significant influence in the composition of the analyzedsamples was observed, depending on the type of enzyme used as pre-treatment. The study results are useful in improving wine-making process andfinal products quality
Effect of weather conditions on growth and yield of winter wheat
No full textThe reaction of winter wheat cultivars in four highly different climatical years, especially regarding the temperature and rainfall, suggested the necessity of stability analyses of their yield. For cultivar recommendation in north-east region if Romania, we evaluated the cultivar ecological plasticity. The paper presents the production results obtained from 44
Romanian varieties of winter wheat grown under pedoclimatic conditions at Ezareni Farm – Iasi Didactic Station, under non-irrigation regime. The best yield stability had Glosa, Andrada and Bezostaia 1 cultivars. The highest yields have been achieved by Unitar3
, Ursita4 , Mirandal FDL4 , Voinic3 , Otilia4 , T.143-113 cultivars, with a 3 three/4 four years average over 6 t/ha. They have a good yielding ability related to different climatic conditions
Studies on isolation and susceptibility to antibiotics of the pathogens involved in SCUD etiology of aquatic turtles
Get PDFThe objectives of this study were to isolate and identify the bacteria present in the shell and plastron ulcers in a group of infected turtles compared with healthy turtles, and antibiotic susceptibility testing of bacterial species identified in order to recommend the appropriate treatment. A total number of 32 red-eared slider (Trachemys scripta elegans) with specific septicemic cutaneous ulcerative disease (SCUD) lesions were sampled from the shell and plastron, compared with 8 healthy turtles. Cotton swabs were used for sampling, and the inoculation was carried out on blood agar, XLD, MacConkey and SDA plates. Biochemical characterization used API Biomerieux 20 system. Susceptibility to antibiotics was evaluated using Kirby Bauer disk diffusion method on Mueller-Hinton agar. In the samples from turtles with lesions, predominantly Gram-negative bacteria were isolated, in particular Citrobacter freundii – 16 turtles, Escherichia coli – 13 turtles, Klebsiella – 10 turtles, Serratia – 9 turtles, Shigella – 8 turtles, Salmonella – 6 turtles, plus Gram positive bacteria such as Staphylococcus – 18 turtles, Micrococcus – 11 turtles and Bacillus – 9 turtles. Regarding the group of 8 healthy turtles ratio was significantly in favor of Gram positive, with Staphylococcus – 7 turtles, Micrococcus 6 and Bacillus 4 samples. Regarding the inhibition area diameter for infected turtles, the most efficient antibiotic was Doxycycline with the average value of 15.15 mm, Enrofloxacin with 14.95 mm and Florfenicol with 14.8 mm. Lower efficiency was observed for Ceftriaxone with 4.05mm and Colistin with 7.01 mm
Impactul asupra mediului cauzat de deşeurile de echipamente electrice şi electronice: un scenariu italian
No full textNowadays, some of the highest amounts of waste is caused by the waste ofelectrical and electronic equipment (WEEE). The main reasons are related tothe increasing demand in consumption and in reducing the life of electrical and electronic equipment (EEE). Our paper focuses on a case study which aims to develop a quantitative analysis of the WEEE flow based on a scenario implemented by an Italian collector from the Emilia Romagna region, specifically the city of Bologna. Thisscenario was evaluated based on the Life Cycle Assessment methodology, in terms of environmental and human health impacts,using the CML2001 and ReCiPe methods, available in GaBi software tool. Following the LCA software application, the impacts generated by the proposed scenario highlighted a negative influence especially on Fossil Fuel Depletion, Marine Ecotoxicity Potential and Global Warming Potential. It was found that the amount of generated emissions causeshighimpacts to material resources and fresh water