Vol 50, No 2 (2018)
RESEARCHES CONCERNING THE BIOECOLOGY OF HOPLOCAMPA MINUTA IN THE ORCHARDS ALONG BISTRA VALLEY – CARAS SEVERIN pag. 3-6
SNEJANA DAMIANOVAbstract: Hoplocampa minuta Crist, is spread in all the areas where plum tree are being cultivated and it produces important damages, especially in the not- maintained orchards. That is why during the period 2010 -2012 there were made researches in the orchards along Bistra Valley (Glimboca), Caras Severin, in order to observe the pest s bioecology so that there can be applied preventive and curative methods against it. During the research period the adults appeared between 8th and 26th April, when there was an effective temperature sum of 47,2°C; the beginning of ponta look place between 10th and 28th April when there was an effective temperature sum of 88,6°C and the larvae appeared in the period 28th April and 18th May, when there was an effective temperature sum of 150,9 °C.
more abstractpest, Hoplocampa minuta, bioecology, plum tree
Presentation: poster
DownloadSTUDIES ON THE USE OF NEW METHODS IN VIEW OF THE EARLY DIAGNOSIS OF FISH DISEASES pag. 7-15
Liliana Blondina ATHANASOPOULOS1, Elena MOCANU1, N. PATRICHE1, Magdalena TENCIU1*, Elena JECU1Abstract: This paper aims to find new methods of laboratory investigations to identify the early stages of parasitic diseases in fish, to reduce mortality and improve disinfecting treatments. Hematology is used in ichthyopathology worldwide, especially in the case of infectious-contagious diseases, but we suggest studying the appropriateness of their widespread use in our country, extending them in the case of parasitic diseases with serious prognosis, to quantify the precise equivalence between the anatomical-pathological changes determined by the degree of fish infestation (resulting from the microscopic examination) and the physio-pathological ones expressed by the biochemical changes (shown by blood tests) that occur in the fish body, in various stages of a parasitic disease. The usefulness of performing a blood analysis, as a precision factor in paraclinical investigations, allows to determine the exact stage of the disease on which the effect of the disinfection treatment shows maximum efficiency and will also reveal the modality in which stocking densities of fish are influencing the immunity mechanism of the fish. From all the parasitic diseases we have chosen a protozoan Ichthyophthirius multifiliis (Fourchet 1876) infestation, which has a mortality of 50-90% on fish, due to a faster propagation rate, an aggressive behavior, it attacks the host tissue, penetrating deep into the subepithelial- skin and gills, thus achieving protection against chemotherapeutic substance used in the treatment, demonstrating the need to treate the disease in the early stages, when the parasite may be destroyed. The experimental results show that the degree of infestation is growing directly proportional to the stocking density, and inversely proportional with the size and immunity of the fish (the immunological parameters are increased by immunoglobulin M), the serological parameters (erythrocytes increase the hematocrit, hemoglobin and the total protein serum decrease), and the biochemical parameters (glucose, ALT and AST) increase due to the stress, disease state and the successive treatments. This study highlights how large losses in the fish farm sector can be effectively decreased, by using new, accurate analysis tools. The losses are caused by parasitic diseases that rapidly evolve and sometimes can be aggravated by the cumulative effect of adaptive stress, as frequent expression of technological errors, that act negatively on the defense mechanisms of fish. By correlating the results of hematologic analysis with those of the clinical and regular microscope examinations, the fish health can be monitored, through the growth period or in the case of biological material transfer from a fish farm to another, aiming to reduce the fish mortality by 89-98%.
more abstract: fish, ichthyopathology, diagnosis, haematological analyses
Presentation: poster
DownloadLYSIPHLEBUS FABARUM ROLE IN REDUCING THE NUMBER OF APHIDS IN VEGETABLES PLANTS pag. 16-20
Abdumannon GOZIBEKOV1, Ioana GROZEAOne of the parasitic species for the aphids present on tomato plants are the braconid wasp called Lysiphlebus fabarum (Braconidae: Hymenoptera: Insecta). The purpose of this scientific paper is to determine whether these wasps can be a way of reducing the population aphids. Tomato plants typically attract many harmful aphid species. It is known that aphids are the most common dangerous species with a high number of generations, and generally difficult to control. Observations were conducted under laboratory conditions in Uzbekistan. The study of the efficacy of Lysiphlebus fabarum on aphids shows that parasite entomophagus can provide a reduction in the number of aphids in tomatoes, even at a ratio of 1:20, their biological efficiency being approximately 50%, and in the ratio of 1: 5 and 1: 10 is about 90%.
more abstractbiological control, aphids, parasitic species, Lysiphlebus fabarum
Presentation: poster
DownloadTHE BEHAVIOR OF SOME VARIETES OF PEAR AT THE MELLIFEROUS FLEA (PSYLLA PIRI) ATTACK. pag. 21-27
SNEJANA DAMIANOVThe work license follows the behavior in culture of some varietes of pear, the research being carried out at Farm 3 Lugoj – The Didactic Experimental Base of Timişoara In the research was analized the behavior at the attack from the melliferus flea (Psylla piri L.) as an often pest in every year producing attacks on the sprouts in special and on the leaf. The experience includes a number of nine variants with seven trees on a variant, from wich 3 trees were analized. The observations regarding the behavior of varietes of pear at the attack from the flea honez were carried out in the years 2011 – 2012 at the maximum pest attack. The effect caused by the pest on vegetative growth determined by measurements was also followed. The obtained results are presented in tabels regarding the frequency of the attack, the level of the attack from the pest (Psylla piri L.) and also the vigor of the trees after the trunk sectional area in cm2, the average length of growing sprouts for a number of nine varietes from each variant. Following observations were noted :poor attacked by flea honey of the pear were the varietes: Dean of winter, Ina Estival, Euras; middle attacked: Virgiliu Hibernal, Milenium; strong attacked: Williams, Countess of Paris, Napoca, Cure. The best vigor of growing after the trunk area and the average length of sprouts growing was obtained at the winter Dean of winter and the Ina Estival variety. Very significant results in terms of average length of growing sprouts were obtained at the Milenium and Napoca variety.
more abstractmelliferus flea, pear, varietes, treatments
Presentation: poster
DownloadSTUDY REGARDING THE EFFECT OF DENSITY, FERTILIZATION AND TILLAGE ON SUNFLOWER YIELD UNDER THE CONDITIONS FROM TIMIŞOARA pag. 28-34
DEGIANSKI A.1*, PÎRŞAN P.1The seed yield in sunflower is influenced by the genetic potential of the hybrid and it’s interaction with the environmental and technological factors. The study was performed using a split-split plot design with three replications, having density as main, fertilization as second and tillage as third factor. As experimental material was used the sunflower hybrid NK Neoma. The used sowing densities were: 70 x 29 cm, resulting 49261 germinating kernels (g.k.) ha-1; 70 x 26.5 cm, resulting 53908 g.k.ha-1; 70 x 24 cm, resulting 59524 g.k.ha-1; 70 x 21.4 cm, resulting 66756 g.k.ha-1. In order to provide the fertilization treatments, were applied combined fertilizers using doses of 250 kg ha -1 (20-20-0) for N50P50K0 and 333 kg ha -1 for N50P50K50. The three applied tillage were: ploughing, scarification and scarification+ ploughing. The aim of this research was to analyse the main effect and interactions between different technological factors like population density, fertilization and tillage on the sunflower yield, under the conditions from Timisoara. The applied fertilization had a contribution of 78.55% to yield variability, significantly higher compared to density and tillage influences. The increasing of density by reduction of space between plants from 29 to 24 or 21.4 cm has a positive effect to sunflower yield. The application of different treatments with NPK has led to significant yield increases of 45-46% compared to unfertilized plot. It is also noted that on the background of fertilization with N50P50 the application of 50 kg potassium had a very small and insignificant effect to yield. On the background of the climatic conditions from the studied period the applied tillage did not significantly influence the sunflower yield.
more abstractsunflower, density, fertilization, tillage, yields
Presentation: oral
DownloadANALYSIS OF CORRELATIONS BETWEEN SEVEREAL GRAINS TRAITS IN SUNFLOWER UNDER DIFFERENT FERTILIZATIONS pag. 35-42
DEGIANSKI A.1*, PÎRŞAN P.1Yield is a complex trait and is a function of several component characteristics and their interactions with the environment. As experimental material was used the sunflower hybrid NK Neoma. Under unfertilized conditions and treatments with N50P50K0 and N50P50K50, were carried out measurements on thousand kernel weight, test weight, oil an protein content. The objective of this research was to assess the correlations between several grains traits under different fertilizations in order to obtain efficient grain yields or amount of oil. Considering all the results it can be seen that the applied fertilization has had a strong influence on the intensity and nature of the relationships between different traits. Thus, under unfertilized conditions the TKW has a significant and major influence of approximately 79.43% to yield achievement, while under the fertilization with N50P50K0 the contributions of the two morphological grains traits are balanced, following that under the effect of fertilization with N50P50K50 the test weight will have a predominant influence of about 96% on yield variability. Under unfertilized conditions the test weight has a main and significant contribution of 91.73% to oil accumulation in grains, instead under the fertilization with N50P50K0 the influence (83.28%) of TKW is the most important, resulting balanced effects of the two morphological grains traits under the fertilization with N50P50K50. This information is necessary for the orientation of the technological works in order to obtain morphological characteristics of the grains that can ensure efficient yields or amount of oil.
more abstractsunflower, correlations, grains traits, fertilization
Presentation: oral
DownloadTHE USE OF OPEN SOURCE SOLUTIONS IN THE PROCESS OF GEOREFERENCING THE HISTORICAL MAPS pag. 43-50
S. DOROBANTU1*, C. NEGRESCU1Abstract. The present paper presents the aspects of the georeferencing concept, especially applied in the georeferencing of historical maps. The topographic map had a culminating evolution since 18th century, from a military perspective. The Banat and Transylvania territories, being under an Austro-Hungarian domination, appeared as the first topographic maps, at the order of Maria Theresa, in 1704. Due to new computing technologies, the study of metrical proprieties on early maps grew in time, the historical map having an important role in nowadays surveying. This is possible with the help of the georeferencing process, which refers to a process of bringing a cartographic image in a spatial location, defined in relation with a known system of coordinates. In this paper, a vivid example of this concept has been addressed, namely, the georeferencing historical map of the Timisoara citadel and its surroundings, a map dating from 1864-1865. An open-source georeferencing software was used to accomplish this task, an application that offers the possibility to visualise dates, to edit and to analyse them. The importance of this paper results from the difference between the historical map presented and the actual emplacement of the citadel of Timisoara in the past. The old settlements and Bega canal bed can be seen using importing and overlapping in Google Earth.
more abstracthistorical map, georeferencing, software, Google Earth
Presentation: poster
DownloadHERBARIUM SURVEY OF GENUS GENTIANA L. pag. 51-59
RALUCA-ELENA ENESCU, EMILIA VECHIU, I. CÂNTARThe paper present the morphological and ecological description of species belonging to the genus Gentiana L. found in ``Al. Beldie`` Herbarium from ``Marin Drăcea`` National Institute for Research and Development in Forestry (INCDS) from Bucharest. The majority of gentian species was harvested because are the source of important pharmacologically active properties and was used as ornamental plants. A total of 206 records belonging to genus Gentiana was found in the Herbarium. A database was created with information about species, year of collect, the collect site, the botanist who made the identification and the conservation status of the plant. The oldest preserved specimen dates back to the 1919s. A brief description of the inventoried species was made. Certain species of this genus have therapeutic properties. Regarding the place of harvesting, the species of this genus have been harvested mainly from the Bucegi Mountains (Romania) and harvested by Al. Beldie.
more abstractGentiana, herbarium, Bucegi Mountains.
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DownloadCONTRIBUTIONS TO THE STUDY ON THE INFLUENCE OF THE SOWING DATE IN THE GRAIN MILLET PRODUCTION (PANICUM MILIACEUM L.) CULTIVATED IN AN ECOLOGICAL SYSTEMIN THE DOBROGEA PLATEAU pag. 60-67
Liliana PANAITESCU*, Simona Mariana PRICOP*, Simona NIȚĂ**The millet (Panicum milliaceum L.) is one of the first crop cereals (cultivated 3000 years ago), being cultivated in India, Egypt, the south and south-east Europe (Gh. V. Roman, 2011). Until the corn was taken into culture, the millet was used on a large-scale in people’s nutrition in our country, being used after its processing in porridge, which is used for the manufacture of a beverage called ˮbragaˮ. In the last period, considering the instability of the crops due to the climate change, the problem of replacing the compromised winter crops with other crops, capable to capitalize better the Romania’s climate and soil, is more pronounced. Having a short vegetation period, the grains germinate at a temperature of 8-10o C, being also a drought - resistant plant, without having major disfunctions in the physiological functions, the millet could become in the future an alternative for the farmers in the south and south-east of the country to replace the winter crops affected by the frost. In this paperwork the authors observed the behavior of a millet crop (Panicum milliaceum L.) in experimental conditions, cultivated in two sowing dates, using the same cultivation technology in both variants. Therefore, the first experimental variant was sown on April 6, 2016 and the second variant on April 29, 2016. Considering the experimental results obtained on the two variants taken into study, we can make recommendations to the farmers in the area, that in the case of winter crops compromised by frost, if they want to establish millet crops, then their sowing should be carried out in the first decade of April (experimental variant 1)
more abstractmillet, compromised crops, sowing date
Presentation: poster
DownloadHEAT WAVES IN THE SUMMER OF 2017 pag. 68-75
V.D.MIRCOV1 FLORINA MOȚIU2, Adalbert OKROS 1 Casiana MIHUȚ1, Mioara ȘIȘU2Abstract: The summer of 2017 was a remarkable one in the history of meteorological measurements because of the temperature records registered, but also regarding the effects generated in the socio-economical sphere. Studies worldwide show that heat waves generate the greatest number of human casualties compared to any other extreme weather phenomena such as floods or hurricanes. Also, they affect agricultural fields and forests, drought and fire causing significant damage each year, worldwide. Since its beginning, the summer of 2017 indicated to be a “hot” one. If in the beginning of June only a few daily records of maximum temperatures were registered and deviations of over 5oC from climatological normal values, in the next heating periods at the end of June, over the extent of July, but especially during the beginning of August numerous temperature records were established. In 4-6 August, in the western part of our country the maximum temperatures have exceeded the normal values for this period by 10…12oC, causing accentuated thermal discomfort and the issue of red and orange codes for extreme temperatures. The purpose of this paper is to identify and study heat waves in the summer of 2017, in the western part of Romania. We will try to establish a relation between the evolution of a set of meteorological parameters, on a worldwide, synoptic or local scale and timeframes containting extreme weather from a thermal point of view.
more abstractheat wave, thermal discomfort
Presentation: poster
DownloadTHE COLD WAVE OF FEBRUARY 25 TO MARCH 2, 2018 AND THE ASSOCIATED RISKS pag. 76-85
V.D.MIRCOV1 FLORINA MOȚIU2, Carmen MOISA2, O. Adalbert 1, Casiana MIHUȚ1Abstract The present paper proposes to highlight the evolution of the generating factors of the cold wave, which from February 25 to March 2, expanded from the northern and northeast of the European continent and affected much of it, including the Romanian geographic space. After a relatively warm winter as thermal aspect, with an ephemeral snow cover in the low relief areas, the last decade of February and the beginning of March, it creates the classic pattern for a genuine winter episode in Romania. Its location in the contact area between an anti-cyclonic field centered on northern and northeastern Europe and a cyclone in the south-east of the continent will facilitate in the first phase the transport of cold air. Then another factor climatic risk, was of interest, namely the blizzard, with the classic area of manifestation in the south, southeastern and eastern Romania. The thermobaric coupling made in this way ensures severe weather conditions, but normal for the cold season. Besides these triggering factors, it is important to mention the risks induced and associated with this severe weather episode, causing damage to agricultural crops, communication routes, to society in general and to the entire environment, affecting the quality of life as a whole. Special attention will be given to another phenomenon, which followed the cold wave, namely the freezing rain. The practical applicability of the study carried out in operative activity, as well as its actuality, consists in the fact that it is a useful support material, referring to an issue as alarming, as normal for the temperate climate zone during the cold season.
more abstractcold wave, winter episode, thermobaric coupling, snow cover, blizzard, freezing rain
Presentation: poster
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