Nematicidal activity of some essential oils of plants of families apiaceae and lamiaceae on Meloidogyne incognita and Rotylenchulus reniformis infecting cowpea
2005
Amin, A.W. (Cairo Univ. (Egypt). Dept. of Agricultural Zoology and Nematology)
Essential oils of nine aromatic plants of families Apiaceae and Lamiaceae were evaluated for nematicidal potential in controlling Meloidogyne incognita, root knot nematode and Rotylenchulus reniformis reniform nematode on cowpea plants. The essential oils inhibited (p less than 0.05) the total number of galls, number of females and egg-laying females, as well as the total number of nematodes in cowpea roots. Melissa officinalis greatly reduced the mature females of Meloidogyne incognita and Rotylenchulus reniformis (98.1 and 94%, respectively). Mentha viridis (91.1%), Ocimum basilicum (90.7%), Cumin cyminum (89.3%), and Rosmarinus officinalis (80.4%) gave more than 80% female reduction on Meloidogyne incognito. Melissa officinalis gave the greatest reduction of Rotylenchulus reniformis females and egg-laying females followed by Carum carvi (88.6%). The other essential oils, were less effective (p less than 0.05) on Rotylenchulus reniformis population. Meloidogyne incognita was more affected by treatments of essential oils than Rotylenchulus reniformis. There was a positive reaction, in most cases, between essential oils treatment and plant growth parameters.
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