ANTIMICROBIAL TEST CHROMOLAENA ODORATA, AZADIRACHTA INDICA LEAVES POWDER AND THEIR COMBINATIONS IN CONTROLLING SEED BORNE FUNGI AND THE EFFECTS ON RICE SEED GERMINATION
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Date
2014-04-14
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Abstract
Rice (Oryza sativa L.) is a rice plants that became the food of most people in Indonesia. The puspose of
this study was to determine the ability of antimicrobial Chromolaena odorata, and Azadirachta indica leaves
powder and their combinations to control seed borne pathogens and their effect on rice seed germination. The
study was conducted at the of Plant Diseases and Plant Breeding Laboratory of Agriculture faculty Riau
University from June until Septenrber 2011. The research was carried out experimentally using complete
Randomized Design (CRD) with four treatrnents and five replicatiorrs. The treatmertt provides is non leaves
powder (T0); leaves powder of Chromolaena odorata (Tl), leaves powder of Azadirachta indica (T2) and
leaves powder combinations of Chromolaena odorata + Azadirachta indica (T3) The parameters observerved was
diameter colonies of the seed borne fungus on petridish (rnm). growth inhibition of seed-borne fungus by lcaves
powder, persentage infections of rice seed borne furrgus and persentage of seed germination. The results of
identification based on morphological characteristics found sorne fungi seed-bornepathogen such as cercospora ,
sp, Rhizopus sp, Rhizoctonia sp (l), Rhizoctonia sp (2), Mucor sp (l) arrd Mucor sp (2).The treatment leaves
powder of Chromolaena odorata , Azadirachta indica and the combinations can control of Cercospora sp,
Rhizopus sp, Rizoctonia sp and Mucor sp in in-vitro. The treatment leaves powder of Azudirachta indica has a
greater ability to control rice seed borne fungus can reduce average percentage infection of Cercospora sp by,
81.82% , Rhizopus sp by 90% Rhizoctonia sp 92.65%i,. and Mucor sp 77.78% compared with non leaves powder. The
leaves powder treatment of C. odorata, A. indica. and both combination (A. indica + C. odorata) could trigger the seed ability to normal germination on tensile papper.
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Keywords
Antimicrobial, Chromolaena odorata, Azadiracta indica, seed born pathogen