Conservacao da viabilidade da semente de cacau, 4: Efeitos de fungicidas e peletizacao
The efficiency of seven fungicides and the technique of pelletization were compared in the conservation of the viability of cacao (Theobroma cacao L.) seeds. Seeds from nearly ripe fruits were used and in all treatments were stored in polyethylene bags at 25 more or less 1 grade centigrade. Arasan, Benlate, Brassicol, Cupravit Azul, Neantina Seco BR, Nitrosan, and Polyran were the fungicides used. The seeds without tegument showed higher percentages of germination than those with tegument. There was a marked reduction in the germination as the storage period increase. The fungicide Neantina Seco BR gave the best result preserving the seeds viable up to 100 days of storage, followed by Benlate which preserved them to 70 days. No significant difference was found among the treatments with Arasan, Cupravit Azul, and Nitrosan. The treatment with Polyran gave the poorest result. Several storage fungi appeared in all treatments during different periods of storage. The conclusion is that the fungi are responsible for the deterioration of the seeds during storage. Pelletized seeds remained viable for 20 days, and this method could not be recommended for preserving the viability of cacao seeds.
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| Format: | biblioteca |
| Published: |
1986
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| Subjects: | CACAO, SEMILLAS, VIABILIDAD DE LA SEMILLA, GERMINACION, CONSERVACION DE SEMILLAS, FUNGICIDAS, GRANULOS COMPRIMIDOS, ALMACENAMIENTO DE SEMILLAS, |
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| Summary: | The efficiency of seven fungicides and the technique of pelletization were compared in the conservation of the viability of cacao (Theobroma cacao L.) seeds. Seeds from nearly ripe fruits were used and in all treatments were stored in polyethylene bags at 25 more or less 1 grade centigrade. Arasan, Benlate, Brassicol, Cupravit Azul, Neantina Seco BR, Nitrosan, and Polyran were the fungicides used. The seeds without tegument showed higher percentages of germination than those with tegument. There was a marked reduction in the germination as the storage period increase. The fungicide Neantina Seco BR gave the best result preserving the seeds viable up to 100 days of storage, followed by Benlate which preserved them to 70 days. No significant difference was found among the treatments with Arasan, Cupravit Azul, and Nitrosan. The treatment with Polyran gave the poorest result. Several storage fungi appeared in all treatments during different periods of storage. The conclusion is that the fungi are responsible for the deterioration of the seeds during storage. Pelletized seeds remained viable for 20 days, and this method could not be recommended for preserving the viability of cacao seeds. |
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