THE EFFECT OF CHEMICAL TREATMENT ON FUNGI POPULATION AND ON Bauhinia variegata L. VAR. Variegata SEEDS GERMINATION
ESTELA DALPIM CASTELLANI, ANTÔNIO DA SILVA, MODESTO BARRETO E IVOR BERGEMANN DE AGUIAR
Seeds of Bauhinia variegata var. variegata were treated with active chlorine (1% and 2%); Captan 750 (2,5 and 5,0g/kg of seeds); Rhodiauram 700 (2,0 and 4,0g/kg of seeds) and control. The treated seeds were submitted to germination and health tests. The following genera of fungi were detected: Alternaria, Aspergillus, Botryodiplodia, Chaetomium, Cladosporium, Colletotrichum, Curvularia, Epicoccum, Fusarium, Helminthosporium, Penicillium, Phoma, Phomopsis, Rhizopus, Trichoderma and Trichotecium. The results showed that: (a) seed germination was not affected by the seed treatment and the fungi incidence; (b) the germination of the seeds treated with active chlorine at 2% was slower than the seeds treated with Captan 750 (2,5 and 5,0g/kg of seeds) and Rhodiauram 700 (2,0g/kg of seeds); (c) the treatments with Captan and Rhodiauram were the more effective on fungi elimination than active chorine.
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