Chemical and Physical Control of Alternaria alternate Associated with Rice Seeds

Abstract

AbstracteA Study in college of Agriculture / univ . of Baghdad to control A alternata associated with rice seeds showed that Benlate Diathen M48 and Monseren Combi have a high ability to inhibit growth of the fungus at the concentration of 80 and 100 ug/ ml of active ingredient . Moneren combi was more active than other fungicides and it gave the highest inhibition of growth 80-94% with the concentration of 80 M/ml ln the case dusting the seeds with the fungicides , Benlate M45 and Monceren Combi showed a high effectiveness in inereasing the percentage of seed germination Moncerene Combi was the more effective in control lthing A.altemata at a rate of 3g/Kg rice seeds with percentage of germanation of 90% in soil contaminated with A.alternata while in the control treatment the germination percentagee was 44.66% .The results of the physical control of the pathogen showed that dry temperature of 55˚C for 30 minute to treat infected rice seed with the fungus was very effective and the infection percentage was 0.05% , while hot water at 55˚C for 30 minutes totally controlled the fungus in the seeds .Percentage of reeds germination or growth of root was not affected