تأثير المستخلصات المائية لبعض النباتات في حياتية الحلم ذي البقعتين Tetranychus urticae (Koch)‎ على نبات البامياء

الملخص EN

This study was conducted to measure the effectiveness of four water extracts of some plants for the control of Tetanychus urticae (Koch).

Water extracts were obtained from henna Lawsonia inermis, Cumin Cuminu cyminum, sewak Salvadora persica and ginger Zingiber officinale at four concentrations of 25, 50, 75 and 100%.

The results obtained showed that ginger and cumin water extracts were 100% effective in preventing egg hatching as compared to 92% and 77% effectiveness for henna and sewak, respectively, and there were significant differences among treatments.

Cumin and ginger water extracts at 100% concentration were more effective in controlling mite's larvae (100%) than henna and sewak water extracts with 97% and 78% kill, respectively, with significant differences among treatments.

Furthermore, the effect of water extracts at 100% concentration on mite adults were similar to their effect on larvae and reached 100% mortality for cumin and ginger extracts, followed by henna extract (94%) and sewak (85%), and mortality rate was proportional to the extract concentration.