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• Examination of the plum psyllid (Cacopsylla pruni Scopoli), a vector of European Stone Fruit Yellows (ESFY) phytoplasma in the countryside of Boldogkőváralja (Hungary)

  5-11

  Dominika Bodnár

  Emese Mergenthaler

  Orsolya Viczián

  Gábor Tarcali

  Views:

  239

  European Stone Fruit Yellows(ESFY) phytoplasma disease on apricot was identified by molecular methods for the first time in 1992 in Hungary. Currently, the pathogen is known as’ Ca. Phytoplasma prunorum’. Since, the pathogen become wide-spreaded and manyof the apricot-plantations had to be eliminated. In 2009 and 2010 in the countryside of Boldogkőváralja the infection of the apricot-plantations was about 77%. As the disease spreading and causing large damages, we studied the roleo fpossible vector,the plum psyllid (Cacopsylla pruni Scopoli) in the areas of Boldogkőváralja, North-East-Hungary. Studies were done in the year of 2016, monitoring the behaviour of the psyllids in four different areas, and caught 41 them for further examination. We collected plant samples from those apricot trees, on which the plum psyllids were caught.

• Ethological Observations at an Outdoor Gilts Keeping System

  9-15

  Márta Alexy

  Géza Nagy

  János Gundel

  Views:

  91

  The authors examinated behaviour of twenty-eight, grouped-housed Hungarian large white x Hungarian landrasse gilts in grassland-based production system.
  The social rank was recorded on two days following, social rank was unaffected by even age or weight of gilts.
  The daily liferhythm was recorded on four different days in two weeks period. Within daily rhyhtm the following behaviours were recorded: eating, drinking, grazing, rooting, excretion and resting. On the first two observation days gilts were more active, in their daily activity two pitches were recorded.
  30% of the whole paddock was used specifically by pigs as resting and excretion area.

• Measurement of degradation on under-utilized natural turf

  115-121

  Krisztina Varga

  István Csízi

  Views:

  172

  The role of turf serving animal husbandry is significantly declining with the decreasing number of grazing livestock in Hungary. Accordingly, the area of under-utilized or non-utilized turfs is increasing. At the University of Debrecen, Institutes for Agricultural Research and Educational Farm, Karcag Research Institute we studied four types of turf utilization in three repetitions on a salt meadow with Alopecurus pratensis. As a result of the performed examinations, we identified the composition of the flora structure on the investigated area and we measured carbon-dioxide circulation and soil moisture.

• A study of product strategy priorities at the small enterprises of the North-Alföld Region

  55-64

  Zoltán Magyar

  Views:

  86

  Through a non-representative sample of the small enterprises of the North-Alföld Region, this paper studies the product strategic priorities enabling us to make a detailed typology of small
  enterprises. According to the relevant technical literature, the types of small enterprises have typical strategic priorities. Obviously, each group can be characterised with certain strategic
  priorities, which are sharply distinct from each other. These priority features are shown in the form of characteristic features in the enterprise’s marketing activities, market behaviour (product policy, innovation attitude, technology, price policy). This paper studies the enterprises of the sample through the role of production technology, material quality, low price and branding endeavours affecting product positioning.