Effect of Water Extracts of some Aromatic and Medicinal Plants on Mortality and Egg Hatching of Root- knot Nematode, Meloidogyne Incognita in Vitro studies
Journal Title: Egyptian Journal of Agronematology - Year 2018, Vol 17, Issue 1
Abstract
Water extracts of the ten aromatic and medicinal plant namely, Camphor (Eucalyptus globulus), Camphor Lemon (E. citriodora), Demssisa (Ambrosia maritime), Lemon grass (Cymbopgon citratus), Marjoram (Origamum majorana), Neem (Azadrachta indica), Rosemary (Rosmarimus officinallis) and Thyme (Thymus vulgaris) as leaves, Chamomile (Matricaria chamomilla) and Daisy (Calendula officinalis) as leaves and flowers with different concentrations (5, 10 & 15%) of different plants were assessed in vitro against egg hatching and juveniles (J2s) mortality of root- knot nematodes Meloidogyne incognita in different durations. Results indicated that eggs inhibition and J2s mortality increased with an increase in the concentration of all the extracts. Similarly, with an increase in exposure time, J2s mortality was also increased. Water extracts of all plants showed nematicidal effect against M. incognita at varying degree. Based on these finding, these plant extracts at the highest concentration (15%) were divided into 4 main groups i.e. highly toxic ( 85% mortality or inhibition), consisting of Demssisa, Camphor Lemon and Thyme, toxic (70 - < 85%) consisting of Daisy and Marjoram, moderately and lowly toxic groups, consisting of the test plant extracts tested. This finding is important from the point of view of controlling root- knot nematodes without the use of chemical nematicides in view of environmental pollution likely to cause. The use of these plant extracts may be one of the efficient alternatives and cheep methods of nematode control, that are sale to farmers and inurnment. These may be replacement to the synthetic dangerous and expensive chemical nematicides in future.
Authors and Affiliations
M. Maareg, A. El-Gindi, Mona El- Shalaby, Abeer Yassin
Keywords
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