Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 3

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  Phthorimaea operculella
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Skosnik ziemniaczak [Phthorimaea operculella [Zell.] [Lepidoptera: Gelechiidae] - szkodnik podlegajacy obowiazkowi zwalczania

100%
Karnkowski W., Konefal T.
Ochrona Roślin
|
2002
|
tom 46
|
nr 08
16-18
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Fumigate efficacy of Juniperus foetidissima essential oil and two terpenes against Phthorimaea operculella

84%
Tayoub G., Alorfi M., Ismall H.
Herba Polonica
|
2019
|
tom 65
|
nr 2
Introduction: Potato (Solanum tuberosum L.) is an important vegetable crop in Syria. Potato tuber moth Phthorimaea operculella is the main damaging pest of this crop. Many approaches were tried to control it. Objectives: This study evaluates the insecticidal activity of Juniperus foetidissima essential oil and two monoterpenes against potato tuber moth using fumigation bioassays. Methods: Essential oil was extracted from new plant branches of Juniperus foetidissima using Clevengertype apparatus. Potato tuber moth Phthorimaea operculella, (adults, eggs, larvae, and pupae) were exposed to different concentrations of the essential oil of Juniperus foetidissima for various periods. The significance of differences between treatments at p<0.05 were evaluated by one-way analysis of variance using the mortality percentages data. The LC50 and LC90 were calculated by Probit analysis. Results: Essential oil vapor with LC50: 0.3 μl/l air was very effective against potato tuber moth at the adult stage. However; adults sensitivity to monoterpenes varied: Nerol caused a 100% mortality at 0.025 μl/l air after 6 h, while the same concentration of citronellol caused 98% mortality. The 0.125 μl/l air concentration of the two compounds caused 100% mortality after 6 h. Conclusion: Results suggest the possibility of using Juniperus foetidissima essential oil as a fumigant to control potato tuber moth infestation in stores
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Fumigant toxicities of essential oils and two monoterpenes against potato tuber moth (Phthorimaea operculella Zeller)

67%
Tayoub G., Alorfi M., Ismail H.
Herba Polonica
|
2016
|
tom 62
|
nr 4
Introduction: The potato tuber moth (PTM) is the major economic pest of potato. Different approaches were tried to prevent and control this pest including natural pesticides and synthetic fumigants. Objectives: This study was conducted to evaluate the insecticidal activity of the essential oils of thyme and myrtle. In addition to evaluating the insecticidal activity of carvacrol and eucalyptol against the different life stages of potato tuber moth using a fumigation bioassays. Methods: Thyme and myrtle oils were extracted from wild Thymus syriacus Boiss. and wild Myrtus communis L. by hydrodistillation. Fumigation experiments were conducted on potato tuber moth of different stages of development (eggs, larvae, pupae, and adults), using standard methods. The potato tuber moth was treated for different periods using different concentrations of the essential oils. One-way analysis of variance (ANOVA) was applied on the mortality percentages data to estimate the significance of differences between treatments at p<0.05. Probit analysis was used to estimate the LC50, LC90 and LT50. Results: Adult stage was the most sensitive to essential oils vapours with LC50 value of 0.5 μl/l air. Whereas, pupal stages were the most tolerant. The essential oil of thyme possessed the strongest fumigant toxicity against eggs with a LC50 value of 6.1 μl/l air. The two monoterpens showed varied fumigant toxicity against adult stage. Carvacrol achieved 100% mortality at 0.125 μl/l air after 6 h, and 0.025 μl/l air after 48h exposure with LT50 period of 0.5 h. Conclusion: The present work demonstrated that T. syriacus essential oil is a promising natural fumigant against the different developmental stages of PTM.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.