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[9000500.] رقم البحث : 9000500 - |
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A Comparative Toxicological Charachteristics of Some Wild Plants in North Sinai against Nematode Meloidogyne incognita / |
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Agricultural Research Journal Suez Canal University / |
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S. A. H. Eid |
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M. E. Mahrous |
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M. N. El-Basiony |
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A. A. El-Sebaei |
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Olive; parasitic- nematodes; Meloidogyne incognita; wild plant –extracts; wild- plant ; Achillea santolina, Artemisia monosperma, Calotropis procera, Citrullus colocynthis, Cleome Africana, Hammada elegans, Hyoscyamus muticus, Ricinus communis Nematicide-oxamyl; control. |
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The sedentary endoparasitic root-knot nematode [ RKN ], Meloidogyne incognita ( Kofoid and White ) Chitwood, is worldwide an economically important agri-pest, reducing the yield and quality of crops. The traditional method of RKN control is based mainly on chemical nematicides, which will not be frequently available from last decade onwards; their use is highly objectionable due to their major contribution to ground water contamination and dangers to the environment and to human and animal health. In a glasshouse in pot trial, dried leaves of eight wild plants in comparison with oxamyl were evaluated against M. incognita infecting olive cv. Picual. Powdered leaves were used at 5, 10 and 20 gm/kg soil, while oxamyl was applied at 4, 8 and 16 ppm. Results revealed that incorporation of dried leaves of the tested plants and oxamyl reduced galling and reproduction of M. incognita compared to plants free from any amendments. This reduction was varied according to wild plant species and rate of application. The wild plant H. elegans at three applied concentrations proved to be more effective in controlling M. incognita. Number of galls, egg-masses and juveniles for H. elegans at the lowest conc. ( 5gm/kg soil ) were 38.33, 9.33 and 220 respectively, while at the highest cons. ( 20 gm/kg soil ) completely eliminated galls, egg-masses and juveniles. On the other hand, C. colocynthis gave good results in reducing galling and reproduction, since number of galls, egg-masses and juveniles at the three conc. did not differ significantly with those obtained with oxamyl. Other tested plants showed a relatively median effect in decreasing galling and reproduction of M. incognita. Also general mean of the three conc. for each treatment was calculated and the nematicidal efficiency based on percent reduction in galling and reproduction was separately estimated in relation to the parallel values of untreated plants. It was clear that H. elegans has the upper hand, followed descendingly by oxamyl at ppm range, C. colocynthis and A. santalina. from all what mentioned it could be concluded that there is a promising possibility of using an ecofriendly effective alternatives or non chemical pest management systems for achieving a sustainable agricultural practices. |
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