EVALUATION OF THE RELATIVE EFFICIENCY OF CHLOROZAN ® AND HELBAN ® AGAINST Psammotermes hybostoma (Desn.) IN SANDY SOIL IN FAYOUM GOVERNORATE, EGYPT | ||||
| Fayoum Journal of Agricultural Research and Development | ||||
| Article 13, Volume 26, Issue 2, July 2012, Page 151-164 PDF (539.98 K) | ||||
| Document Type: Research articles. | ||||
| DOI: 10.21608/fjard.2012.195016 | ||||
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| Authors | ||||
| Nadia A. Abd El-Latif1; Sanaa A. M. El-Sawi2 | ||||
| 1Plant Protection Research Institute, A.R.C., Ministry of Agriculture. | ||||
| 2Central Laboratory of Residues Analysis of Pesticides and Heavy Metals in Food, A.R.C., Ministry of Agriculture. | ||||
| Abstract | ||||
| The present study was conducted at El-Hashatra village, Yousf El Sedek district, Fayoum governorate for 33months. Chlorozan 48% and Helban 48% were tested against the subterranean sand termite P. hybostoma; the active ingredient of each is chloropyrifos. A building of 5 rooms was chosen for experimentation. The room represented a replicate. Corrugated cardboard traps were used for 3 months to determine foraging activity. In a complete randomized design, a dose of 4L/trench 2% aqueous emulsion was used. Five treatments were applied in each room; two treatments for Chlorozan being one beneath earthen floor and the other beneath cement slab. For Helban termiticide similar treatment was applied. Control treatment (5 trenches) received only 4L water/ trench. Results showed that infestation varied and indicated the efficiency of these termiticides for controlling termites. The least number of infested traps was recorded in soil treated with Chlorozan beneath cement slab followed by soil treated with Helban termiticide beneath cement slab then soil treated beneath earthen floor compared with control treatment. Helban was less effective when applied beneath earthen floor, where complete protection was for 6 months, whereas in treated soil beneath cement slab 100% protecting was for 14 months. Chorozan results showed more stable effects. The full protection was extended to 15 months in treated soil beneath both earthen floor and cement slab. Chemical analysis of treated soil after 33 months indicated that residues of Chlorpyrifos in Helban beneath earthen floor was 0.03 - 2.4 ppm and that beneath cement slab was 0.04 - 68.0 ppm. The residues with Chlorozan treatments ranged between 0.07 - 123.0 ppm in earthen floor and 0.65-185.0 ppm in that beneath cement slab. The lowest concentration of Chlorpyrifos that gave protection from subterranean termites infestations was 13.3ppm. | ||||
| Keywords | ||||
| Psammotermes hybostoma; Chlorozan; Helban; Sandy soil; Chemical analysis | ||||
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