Rice blast disease caused by, a seed-borne fungus, Pyricularia grisea is an important and serious.Disease of rice (Oryza sativa L.) worldwide. The disease has been reported to cause yield losses of.Up to 40% in Tanzania. Studies were conducted to determine the effect of aqueous extracts of Aloe.Vera Allium, muricata, sativum Annona, indica Bidens Azadirachta, pilosa Camellia sinensis Chrysanthemum,,,Coccineum processed Arabica, Coffee, stramonium Nicotiana Datura, tabacum and Zingiber.Officinalis for control of rice blast disease (Pyricularia grisea) in-vitro and in-vivo. The results.Indicate that processed C. Arabica at 10% and 25% (V / V) had the highest (81.12%) and (89.40%).Inhibitory effect respectively against,, P. Grisea. Aqueous extract from N. Tabacum at 10% concentration.Ranked third (80.35%) in inhibiting P. Grisea. These were followed by extracts from 25% A.Vera (79.45%) and 25% C. Coccineum flower (78.83%). The results also indicate that extracts from,,A. Indica A. Vera,,, A. Sativum C. Arabica D. Stramonium,,, C. Sinensis Z. Officinalis and N. Tabacum did.Not have any phytotoxic effect on Seed Germination shoot height, root length, dry weight seedling,,,Growth and seedling vigour index. These plant extracts can thus be used for rice seed treatment to.Manage rice blast disease.
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