Effects of irrigation regimes on the yield and water use of squash (Cucurbita pepo L.) under field conditions

• Autores: Gil-Marín, José Alexander, Cordova-Rodriguez , María Ximena, Montaño-Mata , Nelson
• Formato: artículo
• Fecha de Publicación: 2021
• Institución: Universidad Nacional Agraria La Molina
• Repositorio: Revistas - Universidad Nacional Agraria La Molina
• Lenguaje: español
• OAI Identifier: oai:revistas.lamolina.edu.pe:article/1786
• Enlace del recurso: https://revistas.lamolina.edu.pe/index.php/acu/article/view/1786
• Nivel de acceso: acceso abierto
• Materia: Eficiencia del uso del agua; rendimiento; riego por goteo; calidad del fruto; Water use efficiency; yield; drip irrigation; fruit quality

This work was carried out in the San Vicente sector, Maturín Municipality, Monagas State, Venezuela between the months of june-september 2015, with the objective of determining the effect of four irrigation deeps on the yield, production, quality of the fruits and efficiency in the use of water in the Shiraz cultivar of squash (Cucurbita pepo L). An experimental design of random blocks with three repetitions was used, with an arrangement of divided plots, where the main plot was the different irrigation deeps. The main plot had dimensions of 10 m long by 3 m wide, in the same four irrigation lines separated by 1.0 m were installed. Four irrigation criteria were applied, consisting of replacing the equivalent of 60%, 80%, 100% and 120% of the crop evapotranspiration (ETc). The parameters measured were the productive components and plant yield (t/ha). A type "A" evaporimeter tank was used to estimate the evapotranspiration of the squash. The 120% ETc treatment allowed the maximum yield and quality (in terms of fruits / plant, length, diameter and weight of the fruit), and the highest WUE. The maximum yield obtained was 33, 39 ton / ha. All the production functions of the yield and the quality parameters of the fruit perform a mathematical equation of the linear type with a high value of the coefficient of determination R2 above 90%. The response factor of the squash crop yield (2,35); greater than 1 indicates that the squash is very susceptible to water deficit.