Laboratorijsko preučevanje insekticidnega delovanja prahov invazivnih tujerodnih rastlinskih vrst v samostojni uporabi in kombinacijah z lesnim pepelom in diatomejsko zemljo na riževega žužka (Sitophilus oryzae, Coleoptera, Curculionidae)
| Autor: | Vasilić, Andrija |
|---|---|
| Přispěvatelé: | Trdan, Stanislav |
| Jazyk: | slovinština |
| Rok vydání: | 2022 |
| Předmět: |
rižev žužek
tree of heaven lesni pepel navadna amorfa alternativne metode varstva rastlin Sitophilus oryzae storage pests wood ash diatomejska zemlja indigo bush Staghorn sumac udc:632.7:632.936(043.2) laboratorijski poskus plant protection/laboratory experiment invanzivne tujerodne rastline diatomaceous earth veliki pajesen octovec alternative methods rice weevil Canada goldenrod skladiščne žuželke invasive alien plants kanadska zlata rozga |
| Popis: | V laboratorijskih razmerah smo preučevali insekticidno delovanje prahov štirih invazivnih tujerodnih rastlinskih vrst (navadne amorfe [Amorpha fruticosa], velikega pajesena [Ailanthus altissima], kanadske zlate rozge [Solidago canadensis] in octovca [Rhus typhina]) v samostojni uporabi in v kombinacijah z lesnim pepelom in diatomejsko zemljo. Cilj naloge je bil preučiti učinkovitost navedenih prahov za zatiranje riževega žužka (Sitophilus oryzae) pri različnih temperaturah in različnih vrednostih relativne zračne vlage. Insekticidno delovanje prahov smo preučevali pri dveh različnih temperaturah (20 in 25 °C) in pri dveh vrednostih relativne zračne vlage (Rh) (55 in 75 %). Pšenico smo mešali z različnimi kombinacijami prahov v večjih erlenmajericah. Ugotovili smo nizko smrtnost pri samostojni uporabi rastlinskih prahov. Diatomejska zemlja je pokazala visoko učinkovitost pri samostojni uporabi, pri manjši koncentraciji v kombinacijah z rastlinskimi prahovi pa je njihova učinkovitost značilno padla. To pomeni, da ne obstaja dovolj sinergije med rastlinskimi prahovi in diatomejsko zemljo, medtem ko smo pri uporabi lesnega pepela ugotovili zadovoljivo učinkovitost, tako pri samostojni uporabi kot v kombinacijah z rastlinskimi prahovi. In this study, we studied the insecticidal activity of powders of four different invasive alien plant species under laboratory conditions, namely: 1) false indigo (Amorpha fructicosa), 2) tree of heaven (Ailanthus altissima), 3) Canada goldenrod (Solidago Canadensis) and 4) staghorn sumac (Rhus typhina), used alone and in combination with wood ash and diatomaceous earth. The goal of the task was to study the effectiveness of powders of four invasive alien plant species and combinations with wood ash and diatomaceous earth for the control of rice weevil (Sitophilus oryzae) at different temperatures and different air humidity values. The insecticidal action of the selected powder formulations and the effect of the prepared formulations were studied at two different temperatures (20 and 25°C) and at two values of relative air humidity (Rh) (55 and 75%). Wheat was mixed in various combinations in larger erlenmeyer flasks. We found low mortality in the independent use of plant powders. Diatomaceous earth showed high efficacy when used alone, but when we reduced the concentration in the combinations with plant powders, the efficacy dropped. This means that there is not enough synergy between plant dusts and diatomaceous earth. On the other hand, we found satisfactory efficiency in the use of wood ash, both in single use and in combinations, against rive weevil. |
| Databáze: | OpenAIRE |
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