الكثافة العددية لنيماتودا الحمضيات الموالح Tylencltulus semipentrans على أصول الحمضيات الموالح المختلفة تحت الظروف الحقلية في ليبيا

الملخص EN

Population density of citrus nematode tylenchulus semipentrans \l'as evaluated on five citrus root-stocks; sour orange (citrus aurantiunt), rough lemon (c.

jambhiri), cleopatra mandarin (c.

reshni), rangpure lime (c.

limonia) and troyer citrange (poncirus trifoliata X C.

sienensis), all),ear around in soil and root samples at three different depths (20, 40 and 60 cms), under field conditions of libya.

results indicated that there were no significant differences in the nematode population density between the five root-stocks.

meanrvhile.

there were highly significant differences between seasons.

root and soil samples.

but no significant differences were obsen ed betrveen soil depths.