@article{icrisat6253, title = {Evaluation of lawsonia inermis leaf extracts for their in vitro fungitoxicity against certain soilborne pathogens}, publisher = {Plant Protection Association of India}, author = {V Girijashankar and B Thayumanavan}, pages = {111--114}, year = {2005}, volume = {33}, journal = {Indian Journal of Plant Protection}, number = {1}, keywords = {Lawsonia inermis, Rhizoctonia solani, Pythium aphanidermatum, Macrophomina phaseolina, fungitoxicitye}, url = {http://oar.icrisat.org/6253/}, abstract = {Screening of Lawsonia inermis leaf extracts for their fungitoxicity was carried out in vitro against some selected soil-borne phytopathogens, Rhizoctonia solani. Pythium aphanidermatum and Macrophomina phaseolina. Of the three solvent extracts studied, cold-water extract at 10\% concentration showed a maximum of 70\% inhibition of the mycelial growth of R. solani. Methanol extract at 2.5\% concentration completely inhibited P. aphanidermatum while the same at 10\% proved effective against M. phaseolina by 60\% when compared to cold water and petroleum ether extracts. Petroleum ether extract was ineffective against R. solani and M. phaseolina. The amount of total phenols was 4.5 mg/g of fresh leaf tissue. Reverse phase high performance liquid chromatographic analysis of the cold-water extracts revealed the presence of four different absorption peaks of which only two compounds could be identified i.e. tannic acid and catechol} }