Efectos De Los Niveles De Nitrógeno (0 – 150 – 200 – 250 Kg. Ha-1) En La Fase Inicial De Crecimiento Del Cultivo Del Café (Coffea Arábiga L.) En La Estación Experimental La Argelia En El Cantón Loja

Nitrogen is one of the nutrients that most limits crop production, due to its high demand during the growth stage (120 kg/ha), insufficient nitrogen (N) nutrition manifests itself, in the first place, in stunted vegetation, weak plants, small leaves, yellowish or pale green color and also affects crop quality, resulting in undesirable color and flavor. During the first days of October 2021 at the La Argelia Experimental Station, the evaluation of coffee growth continued with the different treatments of 0, 150, 200 and 250 kg ha-1 of nitrogen (N). The dasometric parameters evaluated were: height, basal diameter, number of leaves, number of branches, and the evolution of nitrogen in the leaves of the coffee tree. On the first day of this project, the first measurement of the 4 treatments was carried out, highlighting treatment 4 with a measurement of 52 cm and treatment 1 with a measurement of 44 cm, with an 8 cm increase. At day 180 of the project, treatment 1 and 4 measure 53 cm and 71 cm respectively, having a notable increase of 19 cm, furthermore, in the foliar analysis, the treatments with nitrogen application showed an increase in nitrogen reaching optimal ranges for the crop, unlike the control, which showed nitrogen (N) deficiency in the leaves. It is concluded that treatment 4 with 250 kg. ha-1 at 180 days of the project, showed an increase in height, basal diameter, number of branches and leaves, compared to the other treatments, and the nitrogen (N) in the leaves increases as the nitrogen (N) dose increases. KEY WORDS: Nitrogen, nutrition, dasometric variables, foliar analysis.

• Hlavní autor: Zerna Rojas, Jean Carlos (author)
• Médium: bachelorThesis
• Jazyk: spa
• Vydáno: 2023
• Témata: CAFÉ; NITRÓGENO; COFFEA ARABIGA
• On-line přístup: https://dspace.unl.edu.ec/jspui/handle/123456789/26133