Eficiencia agronómica y económica de la fertilización líquida en maíz blanco para consumo en fresco bajo condiciones de secano en Calceta – Manabí

The objective of the work was to evaluate the agronomic and economic effectiveness of liquid fertilization in white maize under rainfed conditions. The work was carried out during the rainy season of 2021, in the town of Figueroa, Calceta, Manabí. Three fertilization techniques were tested: granulated, liquid injected, and liquid in drench. A plot with nitrogen omission was also established, in order to calculate the agronomic efficiency of nitrogen (EAN). A randomized complete block design with four treatments, five replications and 20 experimental units was used. The variables recorded were: number of commercial ears, EAN (kg of ear kg-1 of N applied) and net economic benefit – BEN (USD ha-1). The data was processed by analysis of variance and separation of means with Tukey α<0.05. The results indicated significant statistical differences (p<0.05) for all the variables evaluated. The production of commercial ears was 41,600 for injected fertilization, 41,200 for drench fertilization and 35,900 for conventional granulated fertilization. The EAN was 35.99, 32.27 and 21.33 kg of ears kg-1 of N applied, with injected liquid fertilization, in drench and granulated, respectively. The liquid fertilizations in drench and injected reached the highest BEN of the fertilization, with an increase of 302 and 276 USD ha-1, with respect to the granulated fertilization. Liquid fertilization is shown as an efficient nutrition technology for rainfed maize, when environmental conditions do not provide sufficient soil moisture for the dissolution of fertilizers.

• 主要作者: Solís Vargas, Julio Cesar (author)
• 格式: bachelorThesis
• 语言: spa
• 出版: 2022
• 主题: Zea mays; Fertilización diluida; Rendimiento; Uso eficiente de nutrientes
• 在线阅读: http://repositorio.espam.edu.ec/handle/42000/1959