Advertisement

Anzeiger für Schädlingskunde

, Volume 38, Issue 5, pp 65–69 | Cite as

Biologie und Bekämpfung der SpinnmilbeTetranychus telarius L. auf Aubergine (Eierfrüchten)

  • Ibrahim Abu Yaman
Article
  • 16 Downloads

Zusammenfassung

1. Die Spinnmilbenpopulation war von Anfang Oktober bis Anfang Ende Januar gering. Während dieser Zeit haben sie das Wachstum und Produktion der Pflanzen nicht sonderlich beeinflußt. Danach stieg ihre Zahl schlagartig und rief Schaden unter den Aubergine-Pflanzen hervor.

2. Wir halten die Temperatur für den Hauptfaktor für den Anstieg und Abfall der Spinnmilbenpopulation. Niederschläge haben geringen Einfluß.

3. Die Spinnmilben werden bereits bei Temperaturen von 13,4–15°C aktiv. Die Aktivität nimmt mit dem Temperaturanstieg zu und die Milbenzahl erreicht einen Gipfel bei etwa 21°C. Weiter ansteigende Temperatur bewirkt einen Abfall der Anzahl.

4. Im Sommer werden keine Spinnmilben gefunden.

5. Bei leichtem Befall werden die Spinnmilben an den unteren Blatteilen gefunden, bei schwerem Befall aber auch an der oberen Blattoberfläche.

6. Kelthane und Tedion sind die besten Bekämpfungsmittel gegen die Spinnmilbe.

7. Organische Phosphorverbindungen ermöglichen einen Anstieg der Spinnmilbenpopulation, wahrscheinlich durch das Abtöten ihrer natürlichen Feinde, und die Milben werden resistent gegen ihre Wirkung.

Conclusion

1. Spider mite populations were very small at the beginning of October and until the end of January. During that time they had no harmful effect on plant growth and production. After that date their numbers increased strikingly and caused damage to the eggplants.

2. We consider temperature as the major factor influencing the increase and decrease in spider mite populations. Precipitation has little effect.

3. Spider mites become active and reproduce already at mean temperatures of 13,4–15°C. The activity increases with the increase in temperature and the numbers reached the peak at mean temperature of 21°C. Further increase in temperature caused the decrease in numbers.

4. Spider mites are not found in summer.

5. Spider mite is found on the lower surface of the leaf when infestation is light, but also on the upper surface when infestation is severe.

6. Kelthane and Tedion give the best control of the spider mite.

7. The organo-phosphorous compounds allow increase of spider mite populations, probably by killing its natural enemies, and the mites developing resistance against their effect.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literaturverzeichnis

  1. 1.
    Blattny, C., u. V. Osvald, 1948: Contribution to the Prognosis of Factors injurous to Hops. 111. The Hop Red Spider (Tetranychus telarius L.). Ochr. Rost. 21 pt. Prague.Google Scholar
  2. 2.
    Butler jr., G. D., 1955: The effect of Alfalfa Irrigation Treatments on the Two-spotted Spider Mite in Alfalfa. J. econ. Ent.48, 221–222.Google Scholar
  3. 3.
    Fritzsche, R., 1959: Investigations on the control ofTetranychus telarius on runner and dwarf beans. Z. angew. Zool.46 Berlin.Google Scholar
  4. 4.
    Jefferson, R. N., und F. S. Morishita, 1956: Rohm u. Haas FW-293 for mite control on ornamentale. J. econ. Ent.,49, 392–393, Menasha, Wis.Google Scholar
  5. 5.
    Klein, H. 2, 1936: Contribution to the knowledge of red spider in Palestine. I. The Oriental Red Spider,Anychus orientalis Zacher, Bull. agric. Res. Stat. Rehovoth. pp. 3–36. II. The Common Red Spider,Epitetranychus althaea V. Hanst. T. C. pp. 63–73. Rohovoth.Google Scholar
  6. 6.
    Korlkov, D. M., 1927: The Common Red Spider (T. telarius L.,Tetranychidae: Arachnidea in the Moscow Government. In Russian). Trud. Opuitne-Issled. Uchastka Stantz, Zasheh, Rast. Vred. Moskovsk, Zemel. Moscow.Google Scholar
  7. 7.
    Mistric jr., W. J., 1958: Chemical control ofTetranychus telarius L. andT. cinnabarinus Bois. on cotton. J. econ. Ent.50, 803–805. Menasha, Wis.Google Scholar
  8. 8.
    Severin, H. C., 1919: Tenth Annual Report of the State Entomologist of South Dakota for the Period ending 30th June 1919. South Dakota State Coll, Brocking, pp. 1–36.Google Scholar
  9. 9.
    Speyer, E. R., 1928: The Red Spider Mite (Tetranychus telarius L.). J. Pomol. Hortic., Sci., vii, pp. 161–171, London.Google Scholar
  10. 10.
    Speyer, E. R., 1929: Red Spider Investigations. 14th Ann. Rep. Exptl. Res. Sta., Nursery Mkt. Gdn. Ind. Depmt. Soc., pp. 76–79, Chestnut, Herts.Google Scholar
  11. 11.
    Stepantzev, L. V., 1936: Control ofEpitetranychus althacae. (In Russian). Sotzial. Nauk. Tekh.,4, 5–19, Tushkent.Google Scholar
  12. 12.
    Tibilova, 1932: Contribution to the Biology of Spider Mite in Tushkent Region (In Russian). Byull. nauchno — issled. Inst. Khlopkoved. (NIHI). Bull. Sci. Res. Inst. Cott. Cult., pp. 49–61, Moscow.Google Scholar
  13. 13.
    Unpublished report on vegetables grown in Jordan in 1961. Ministry of Agriculture, Amman, Jordan.Google Scholar
  14. 14.
    Waskew, F., 1919: Reports for the Month of August and September 1919. Mthly. Bull. State Dept. Agric. Sacramento, vii, pp. 544–547.Google Scholar
  15. 15.
    Wilcox, J., und A. F. Howland, 1957: Experiments for the control of Spider Mites on Lima Beans. J. econ. Ent.50, 128–132, Menasha, Wis.Google Scholar
  16. 16.
    Wilcox, J., und A. F. Howland, 1958: Systimic Insecticides applied in low — and high — gallonage sprays on Strawberry, Lima Bean, and Swiss Chard. J. econ. Ent.,50, 800–801, 1957. Menasha, Wis.Google Scholar

Copyright information

© Verlag Paul Parley 1965

Authors and Affiliations

  • Ibrahim Abu Yaman
    • 1
  1. 1.Baghdad UniversityIraq

Personalised recommendations