Rotational and nematicidal effect of lupine (Lupinus albus L.: Leguminosae)
The study was conducted to evaluate the nematicidial and rotational activity of lupine (Lupinus albus L.), in completely randomized design in a growth room in pots, in 2011. Naturally infested soil, from an arable land containing root-lesion nematode Pratylenchus thornei Sher and Allen including several other genera of free-living was used. Firstly, lupine (L. albus) and wheat (Tricum durum- the variety Eyyubi) were sown and allowed to grow for 3 months. Secondly, differing doses of lupine extracts were applied to the infested bare soil and allowed for a week. P. thornei population was significantly suppressed in lupine planted pots compared to the wheat planted soil and bare control treatment soil. The nematicidal effect of lupin extract was found to be effective on suppressing P. thornei. The suppression effect of the extract increases as the dose increased. The study suggests the use of lupine plant in two ways: as an effective rotational plant against the root-lesion nematodes in wheat growing areas and as an amendment of its seed extract against plant parasitic nematodes.
Key words: Lupine, lupine seed extract, nematodes, nematicidal effect.