In vivo and In vitro Inhibition of Three Plants Water Extracts on Meloidogyne incognita (Meloidogynidae)
2018
Gad, S.B. | El-Sherif, A. G. | Saadoon, M.S. | Gabar, S.A.
A trial was conducted in order to study the effectiveness of three concentrations (25, 50 and 75%) of water leave extracts of Punica granatum, Conocarpus lancifolius and water seeds as well as fruits of Citrullus colocynthis singly or integrated in comparison with oxamyl on reproduction of M. incognita at the level of 1000 juveniles infecting eggplant under greenhouse conditions. All treatments showed remarkable increase in plant growth parameters as well as reduce nematode criteria. There was a positive correlation between the concentration level and second stage juvenile mortality. The highest water extract concentration of (75%) recorded the highest rate of nematodes mortality for the three extracts used i.e. Conocarpus water dried-leaf extract at the highest conc. (75%) ranked first in increase percentage of nematode mortality. On the other hand, the application of Conocarpus water extract as a dual application with oxamyl achieved the highest values in the improvement of plant growth criteria with the increase of 99.8, 84.5, and 69.4% for plant height, total plant fresh weight, and shoot dry weight, respectively, as well as recorded the highest reduction percentage of nematode final population, galls and egg masses numbers with values 87.4, 78.2 and 85.4%, respectively as compared with nematode alone.
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