Okereke V.C  , R.C. Wokocha  , 
    Effects of Some Tropical Plant Extracts, <I>Trichoderma harzianum </I>and Captan on the
Damping-off Disease of Tomato Induced by <I>Sclerotium rolfsii</I>,
    Agricultural Journal,
    Volume 1,Issue 2,
    2006,
    Pages 52-54,
    ISSN 1816-9155,
    aj.2006.52.54,
    (https://makhillpublications.co/view-article.php?doi=aj.2006.52.54)
    Abstract: Aqueous extracts of ginger, neem seed, bitter cola and leaves of <I>Hyptis suaveolens </I>as well as captan
and <I>Trichoderma harzianum </I>were evaluated in the greenhouse for their efficacy as soil drenches in the
reduction of the damping-off disease of tomato incited by <I>S. rolfsii. </I>The experiment was laid out in a 6x3
factorial in a completely randomized design replicated five times. The results showed that soil drenching two
days before inoculation with <I>S. rolfsii </I>gave disease reduction values which were similar in the treatments:
<I>T. Harzianum </I>(67.1%), neem seed (62.4%), <I>H. suaveolens </I>(60.8%), captan (60.4%), bitter cola (60.1%) and ginger (57.4%). When soil drenches were applied on the same day as the inoculation, <I>T. harzianum, </I>captan and
extracts of neem seed, <I>H. suaveloens </I>leaves and ginger significantly differed (p&lt;0.05) from the bitter cola extract
and the disease reduction values ranged from 40-60%. At two days after inoculation, neem seed extract, captan
and <I>T. harzianum </I>significantly (p&lt;0.05) reduced the disease giving disease reduction values of 53.3, 57.5 and
64.7%, respectively. Generally, the plant extracts showed selective fungi toxicity and were not phytotoxic to the
tomato seeds.
    Keywords: Sclerotium rolfsii;tropical plant;tomato;Trichoderma harzianum