Sustainable production of ‘Comum’ tannia in the hilling and function of seedling types in three crop seasons - doi: 10.4025/actasciagron.v35i2.16152

• Autor(a) principal: Heredia Zárate, Néstor Antonio
• Data de Publicação: 2012
• Outros Autores: Vieira, Maria do Carmo, Faccin, Fabiane Cargnin, Heredia Vieira, Danilo Augusto, Gassi, Rosimeire Pereira, Santos, Anna Luiza Farias dos
• Tipo de documento: Artigo
• Idioma: por; eng
• Título da fonte: Acta Scientiarum. Agronomy (Online)
• Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16152
• topic: Xanthosoma mafaffa; propagation materials; cultural treatments; yield; income; Tratos culturais

This study aims to discover the agro-economic yield of the ‘Comum’ tannia, which was propagated with five seedling types (Extra, Large, Medium, Small and Tiny) and grown both with and without a hilling operation during three crop seasons. In each agricultural year, the treatments were arranged as a 5 x 2 factorial in a randomized complete block design with four replications. The harvests were conducted 238 (2007-08), 231 (2008-09) and 237 (2009-10) days after planting. The data were submitted to an analysis of variance each year. The plants produced from large seedlings and RM-corms had a higher fresh leaf weight. Additionally, the dry weight of the RFC-commercial cormels and RFNC-non-commercial cormels was higher with extra seedlings. The plants grown during 2008-2009 had a higher fresh weight of RM and of RFNC than the plants grown during 2009-10. The interaction between the seedling types and crop seasons significantly influence the yield and dry weight of the leaves of RM and RFC, the leaf length of RM and RFC and the leaf diameter of RFC. According to the economic analysis, a net income of R$ 2,234.08 was obtained when the tannia were cultivated without a hilling operation using extra propagated seedlings.