Fruit yield and quality of melon cultivated in greenhouse with carbon dioxide and potassium applications through irrigation water - DOI: 10.4025/actasciagron.v27i4.1697

• Autor(a) principal: Frizzone, José Antônio
• Data de Publicação: 2008
• Outros Autores: Cardoso, Silvana da Silva, 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/1697
• topic: água carbonatada; fertirrigação; irrigação; melão rendilhado; 5.03.00.00-8 Engenharia Agrícola

The aim of this work was to study the effect of different doses of carbon dioxide (CO2) and potassium (K2O), applied through drip irrigation, at the yield and quality of cantaloupe melon (Cucumis melo L.), hybrid Bônus II, cultivated in greenhouse. 19-day seedlings were transplanted to beds. They were spaced out 1.1 m x 0.3 m apart from each other and vertically directed up to 2.0 m of height. The treatments resulted from combinations of four K2O doses and four CO2 doses applied during the crop. K2O irrigation and application were carried out during four days. CO2 irrigation and application were carried out during two days. 45 CO2 irrigation, 33 CO2 applications and 19 K2O applications were totalized. Results showed that (a) based on a quadratic relation, the number of melon marketable fruits had a significant increase when CO2 and K2O doses were also increased; (b) there was no significant effect of CO2 on the average fruit weight. However, there was a significant quadratic effect for K2O; (c) based on a quadratic relation, when there was an increase of CO2 and K2O doses, the total and commercial melon yield also increased; (d) CO2 and K2O application through irrigation increased the water efficiency usage; (e) there was significant effect of CO2 on the total acidity, on the soluble solids content and on the flesh pH. However, there was no effect of K2O; and (f) K2O application affected significantly the melon flesh thickness and the fruits transversal and longitudinal diameters. CO2 application affected the flesh thickness and firmness.