TY  - JOUR
T1  - Chemical Composition and Bio-Nematicidal Potential of Some Weed Extracts on <I>Meloidogyne incognita</I> under Laboratory Conditions
AU - , T.I. Olabiyi AU - , E.E.A. Oyedunmade AU - , G.J. Ibikunle AU - , O.A. Ojo AU - , G.O. Adesina AU - , K.A. Adelasoye AU - , T.A. Ogunniran 
JO  - Plant Sciences Research
VL  - 1
IS  - 2
SP  - 30
EP  - 35
PY  - 2008
DA  - 2001/08/19
SN  - 1995-476x
DO  - psres.2008.30.35
UR  - https://makhillpublications.co/view-article.php?doi=psres.2008.30.35
KW  - Weed
KW  -botanicals
KW  -bio-nematicide
KW  -root knot nematode
KW  -Melodiogyne incognita
KW  -phyto-chemical analysis
AB  - Laboratory experiments were conducted on the effect of leaf extract of some weeds on root knot nematode, <I>Meloidogyne incognita</I> and also on the chemical compounds in the leaf extract of some weeds. Leaf extracts were obtained from <I>Sida acuta</I> Burm F., <I>Euphorbia hirta</I> Linn<I> Andropogon gayanus</I> Kunth, <I>Phyllanthus amarus</I> Schum and Thomm and <I>Cassia obtusifolia</I> L. weeds. Distilled water and ethanol (95%) were used as the extraction media for nematode bio-assay and phyto-chemical analysis experiments, respectively. Concentrations of each leaf extract of the weed were 5, 10, 15 and 20% (w/v). Approximately, 100 <I>M. incognita</I>  juveniles  were  dispensed  into  each  Petri-dish  containing  the  graded  weed  extracts,  while <I>M. incognita</I> juveniles that were dispensed into distilled water only served as control. Each treatment, including the control, was replicated 10 times. <I>M. incognita</I> juvenile mortality rate increased with an increase in test plant extract concentrations and exposure time. In 15 and 20% (w/v) concentrations of <I>Euphorbia hirta, Phyllanthus amarus </I>and<I> Cassia obtusifolia </I>and 20% (w/v) concentration of <I>Sida acuta </I>and<I> Andropogon gayanus</I>, there was 100% <I> M. incognita</I> juvenile mortality by the 7th day. The result of phyto-chemical analysis revealed that <I>Euphorbia hirta</I> contained tannins, saponins, flavonoids and alkaloids; <I>Andropogon gayanus</I> contained saponins, flavonoids and alkaloids; <I>Cassia obtusifolia</I> contained tannins, flavonoids and alkaloids; <I>Phyllanthus amarus</I> contained tannins, saponins, flavonoids and alkaloids while <I>Sida acuta</I> contained tannins, saponins, flavonoids and sterols chemical compounds.
ER  -