Carbon dioxide application through irrigation water at different crop stages in melon planted in greenhouse - DOI: 10.4025/actasciagron.v27i4.1688

• Autor(a) principal: Frizzone, José Antônio
• Data de Publicação: 2008
• Outros Autores: D'albuquerque Júnior, Boanerges Siqueira, Rezende, Roberto
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Acta Scientiarum. Agronomy (Online)
• Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1688
• topic: água carbonatada; fertirrigação; irrigação por gotejamento; melão rendilhado; 5.03.00.00-8 Engenharia Agrícola

The aim of this work was to study the effect of CO2 applied at different crop stages through water by a subsurface drip irrigation system, at the yield and quality of cantaloupe melon (Cucumis melo L. var. Reticulatus), hybrid Bônus II, cultivated in greenhouse. The experimental design consisted of randomized blocks with four treatments and four replications. There was no application of CO2 and there was application of one CO2 single rate during 2 days in 3 different periods of the crop stage. There were 12 CO2 applications in T1, 6 in T2 and 6 in T3. The total amount of CO2 applied at each treatment was measured in each application and at the end of the crop cycle. There were 12 CO2 applications in treatment T1 (11.85 kg ha-1 of CO2), 6 applications in T2 (11.85 kg ha-1 of CO2) and 6 applications in T3 (11.65 kg ha-1 of CO2). There was no application of CO2 in treatment T4. Results showed that (a) CO2 application through irrigation water for the fruiting provided yield increases; (b) CO2 applications during flowering and fruiting initiation are, technically, the most recommended; (c) CO2 application did not change the vegetative growth of the plants, neither the quality of the fruit regarding the flesh pH and the soluble solids content. However, the total acidity increased, and (d) CO2 application increased the water usage efficiency.