10.22376/ijpbs.2019.10.1.p1-12 Volume 5 Issue 1 2014 (January - March) The effectiveness of aqueous extract of seven locally available medicinal plants i.e. lessThan i greaterThan Trachyspermum ammi lessThan /i greaterThan (seeds), lessThan i greaterThan Zingiber officinale lessThan /i greaterThan (rhizome), lessThan i greaterThan Tinospora cordifolia lessThan /i greaterThan (leaves), lessThan i greaterThan Cymbopogon citratus lessThan /i greaterThan (leaves), lessThan i greaterThan Moringa oleifera lessThan /i greaterThan (bark) were evaluated against the plant pathogenic fungus i.e. lessThan i greaterThan Fusarium oxysporum lessThan /i greaterThan f. sp. lessThan i greaterThan lini lessThan /i greaterThan (causing wilt in linseed). The plant extracts were screened for their antagonistic property against the mycelial growth of the lessThan i greaterThan Fusarium oxysporum lessThan /i greaterThan f. sp. lessThan i greaterThan lini lessThan /i greaterThan at four different concentrations i.e. 10, 25, 50 and 75 percent by using poisoned food technique. The results of this study have shown that all the five plant extracts significantly (p ≤ 0.01) inhibited the growth of the test pathogen. It was observed that lessThan i greaterThan Tinospora cordifolia lessThan /i greaterThan (leaves), lessThan i greaterThan Cymbopogon citratus lessThan /i greaterThan (leaves) and lessThan i greaterThan Moringa oleifera lessThan /i greaterThan (bark) completely inhibited the growth of pathogen at 75% concentration whereas lessThan i greaterThan Zingiber officinale lessThan /i greaterThan (rhizome) caused 89.65% inhibition followed by lessThan i greaterThan Trachyspermum ammi lessThan /i greaterThan (seeds) (82.50%) on the eighth day of inoculation. S.K. DWIVEDI AND SANGEETA Antagonistic activity, Fusarium oxysporum f. sp. lini, Plant extracts 765-772