PARENT SESSION
Poster Session # 8: Agro-Ecology.
Tuesday, August 5 Presentation from 5:00 PM to 6:30 PM. SITCC Exhibit Hall B.
Soil Acarina and Collembola under two vegetable crops grown under plastic tunnels in Kafr El-Sheikh, Egypt.
tadros, mohsen*,1, Sharshir, Farrg 1, Abu-attia, Faiez1, Elshafei, Ghda2, 1 Tanta University,Fac.of Agric,Kafr el-sheikh, Kafr el-sheikh, Kafr el-sheikh, Egypt2 Tanta University,Fac.of Agric,Kafr el-sheikh, Kafr el-sheikh, Kafr el-sheikh, Egypt
ABSTRACT- Three plastic tunnels were chosen for carrying on the present investigation situated in Kafr El-Sheikh area. The first one was 270 m2, the second 357 m2, while the third was 410 m2. The first tunnel (CK) was used to plant cucumber Cucumis sativus L. var. Delta star, and tomatoes Lycopersicon esculentum, var. strain B-VF 145B, and was never treated with any toxicants during the experiment that lasted for 2 seasons (1999-2000). The other two tunnels were grown with cucumber and tomato separately and were treated with 8 different pesticides for the control of white fly, Aphids, leaf miners, thrips and the red spider mite. Soil samples were taken on a monthly basis at random in-between the grown plants, at 8:00 A.M. A steel cylinder of 4" diameter was used to sample 20 cm deep. The procedure lasted from October 1999 until April 2000, and samples were taken from both the CK site and the treated ones. Extraction of organisms took place for 48 hours. Results revealed in recording 30 mite species of 17 families and 4 suborders, and were found to fall under 4 acarina sub-orders; Oribatida, Gamasida, Actinedida and Acaridida. The recorded springtails were of 8 species of 5 families. Soil acarina species under cucumber plantations were found to exceed its numbers 55.21% than those under tomatoes 44.49. The springtail Lepidocyrtus cyaneus (Tullberg) was considered a dominant species. The applied toxicants, were found to decrease soil fauna acarina and collembola; however, it was more effective under cucumber plants than under tomatoes, and soil acarina was more sensitive to toxicants than soil collembola.
Key words: Vegetable Crops , Survey&Ecology, SoilFauna, Plastic Tunnels