Efeito do silício e irrigação na produtividade do tomate de mesa no sudeste goiano

• Ano de defesa: 2015
• Autor(a) principal: Viana, Débora Macedo Paronetto
• Orientador(a): Nascimento, Abadia dos Reis
• Banca de defesa: Nascimento, Abadia dos Reis, Brasil, Eliana Paula Fernandes, Pereira, Alexandre Igor Azevedo
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Goiás
• Programa de Pós-Graduação: Programa de Pós-graduação em Agronomia (EAEA)
• Departamento: Escola de Agronomia e Engenharia de Alimentos - EAEA (RG)
• País: Brasil
• Palavras-chave em Português: Estresse hídrico; Evapotranspiração; Silicato de sódio
• Palavras-chave em Inglês: Water stress; Evapotranspiration; Sodium silicate
• Área do conhecimento CNPq: AGRONOMIA::CIENCIA DO SOLO
• Link de acesso: http://repositorio.bc.ufg.br/tede/handle/tede/5970

The use of silicon shows promising results in productivity of crops. However, its effectiveness on minimizing the effects of water stress on tomato crop is incipient and should be studied. The objective of this study was to evaluate sodium silicate doses through foliar application on tomato (Solanum lycopersicum) and to evaluate the negative effects of water stress under greenhouse conditions. The quality (length, fruit diameter and weight, shell thickness and number of fruits per plant) of tomato was quantified, along with fruit productivity parameters. Plants of the salad group were subjected to four watering rounds (3, 6, 9, 12 days), and three concentrations of sodium silicate (Na2SiO3) (0.0% Si L-1, 0.2% Si L-1 and 0.4% Si L-1) through foliar application. The values stipulated for irrigation intervals correspond to levels ranging from a sufficient water supply to plants to water deficit. The irrigation management was carried out with the aid of an evaporimeter, or mini-tank class A. The experimental design was a randomized block design with a factorial 3x4 (sodium silicate doses x irrigation intervals), totaling 12 treatments with four replications each. In general, the irrigation interval alone influenced more the productivity parameters than the fruit quality parameters. As the plants were growing older, it was detected more significant effect of silicon on parameters evaluated.