1964, Nr 12

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https://hdl.handle.net/20.500.12539/2075

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Przeglądaj 1964, Nr 12 wg Autor "Honczarenkowa, J."

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    PozycjaOpen Access
    Badania nad owadami zapylającymi lucernę
    (1964) Honczarenkowa, J.; Wyższa Szkoła Rolnicza w Szczecinie. Katedra Ochrony Roślin
    For the purpose of increasing the yield of lucerne seed, researches on pollinating insects have been undertaken. After two years of study (being now continued) it was found that pollination of lucerne flowers is mainly due to single hymenoptera and bumblebees, especially of the following varieties: Bombus Hortorum L., Bombus Lapidarius L. and Bombus agrorum P. Ordinary bees, though often crowding around lucerne plants, play a minor part in their pollination.
  • Miniatura
    PozycjaOpen Access
    Doświadczenia nad działaniem niektórych preparatów chemicznych w walce z drutowcami
    (1964) Honczarenkowa, J.; Kisiel, M.; Wyższa Szkoła Rolnicza w Szczecinie. Katedra Ochrony Roślin; Wyższa Szkoła Rolnicza w Szczecinie. Katedra Ochrony Roślin
    This study aimed at testing and comparing two preparations of the sodium carbohydrate group, the powder "Gamatox" (Owadziak 1,2') and the imported Aldrin in fighting the wireworm. In order to protect potatoes and maize, two years of field and laboratory experiments have been undertaken. The mentioned preparations were either sown into the ground stripewise or used to treat the seedlings and grain. Either preparation produced strong toxic effects on the wireworm, but "Gamatox" acted with more speed and greater power. Aldrin, on the other hand, kept on being toxic till a later time. Stripe sowing into the ground proved more advantageous for the plants than treating the grain or seedlings, the latter way being sometimes detrimental to the germination of the plant seeds.
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    PozycjaOpen Access
    Występowanie larw Elateridae (Col.) na łąkach i polach w okolicy Jeziora Dąbskiego
    (1964) Honczarenkowa, J.; Wyższa Szkoła Rolnicza w Szczecinie. Katedra Ochrony Roślin
    Three years of investigations on soil entomofauna carried out on 5 types of grassland and fields, close to the Dąbskie Lake, have shown that the vermin Elateridae (wireworm) larvae constitute 40% of the entomofauna. There were 13 varieties, most of which covered many-years-old grassland and barren lands, settling mainly in the top layers. The Corymbites sjaelandicus Mull variety is grouped in great numbers, but mainly on grassland, while the Corymbites aeneus L. settled rather in fields. The Agriotes sp. groups are in great numbers represented both on grassland and fields, whence they probably spread to neighboring areas.