[Effect of some plant extracts on growth inhibition of Macrophomina phaseolina]

The study showed that water extracts of plants, such as, Azadirachta indica, Thevetia neirefolia, Citrullus colonynthis, Datura stramonium, Neriutn oleander, Eucalyptus camaldulensis, save effect on growth of the M. phaseolina, the causative factor of charcoal root rot on Sesame Sesnium indicum. The results showed the efficiency of all treatments compared with control. The highest effect was given by T. neirefolia extract as 0.7 cm fungus growth inhibition, while the lowest was given by T. camaldulensis extract as 3.9 cm Water extracts of plants oil of: Azadirachta indica, Thevetia neirefolia, Citrullus colonynthis and Datura stramonium at consentration of 1,5 and 10% were tested. The lowest growth inhibition was given by D. stramonium extract [4.2 cm] and the highest effect was that given by A. indica [2 cm] at concentration of 10%. Extracts of T neirefolia, showed only 77.8% growth inhibition

[Efficacy of some plant powders in protecting Sesame seeds against Macrophomina phaseolina in greenhouse]

The study has showed the effect of some powder plant materials i.e, Azadarichta indica seed, Datura stramonium seed, Nerium oleander leaves, Eucalyptus camaldulensis leaves, control, control against the fungus Macrophomina phaseolina that causes charcoal rot. The powder plant material powder was used as 60, 40, 20g/kg of soil. Sesmum indicum seeds have showed the highest germination rate in the soils treated with A. indica seeds powder. Germination rate for S. indium seesds in the soils treated with A. indica seeds powder reached about 69%, whereas germination rate for control was about 4%. The study has also indicated that the highest percentage of infected S. indicum seeds under the soils treated with Eucalyptus leaves powder was [84.78%], while percentage infected seeds under A. indica treated soils was about 25%. All treatments with different concentrations of plants powder have shown inhibition effects on Macrophomina phaseolina growth. The highest percentage of inhibition was seen under the treatment with A. indica seed powder [73.86%], whereas Eucalyptus leaves treatment powder was about 11.36%