Studies on some ecological aspects on the population dynamics of soil acari and citrus nematode under citrus trees in Egypt | ||
| Journal of Pest Control and Environmental Sciences | ||
| Volume 4, Issue 2, December 1992, Pages 117-134 PDF (5.99 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpces.1992.462283 | ||
| Authors | ||
| A. M. Zaki* 1; F. M. Salem1; S. M. Abo-Taka1; U. A. M. Zin El-Din2 | ||
| 1Plant Prot. Dept.,Fac. of Agric., Shebin El-Kom, Menoufia Univ.,Egypt. | ||
| 2Ministry of Education. | ||
| Abstract | ||
| The obtained results cleared that the soil temperature and moisture had obvious role in in- creasing and decreasing nematode population. However, citrus nematode had four generations in the soil of Sefi orange and/or three generations in the roots throughout the year. The generation period varied from 2 to 3 months in the soil and from 3 to 4 months in the root of Sefi orange. Seasonal variations in soil mite population density were representing as the total population of the four suborders i.e., Gamasida, Actinedida, Acaridida and Oribatida in the biotope of Sefi orange. The abundance of the total soil mite population was recorded in three peaks all year round. However, Gamasida and Acaridida had two peaks while there were tree peaks of oribatid mites throughout the year. The monthly abundance percentages of suborder Actinedida were highest in January. Predacious soil mites had a role in controlling citrus nematode population where, gamasid mite increased in September, November, December, January, February, March, April and May while citrus nematode population was decreased in the same months. | ||
|
Statistics Article View: 2 |
||
