Effect of nitrogen, phosphorus, and potassium doses on tree tomato (<i>Solanum betaceum</i> Cav.) growth in the vegetative phase


  • Claudia Helena Ramírez-Soler Universidad Nacional de Colombia: Facultad de Ciencias Agrarias, Departamento de Agronomía; Facultad de Ciencias, Departamento de Biología, Laboratorio de Fisiología y Bioquímica Vegetal, Bogotá http://orcid.org/0000-0002-3283-2675
  • Stanislav Magnitskiy Universidad Nacional de Colombia, Facultad de Ciencias Agrarias, Departamento de Agronomía, Bogotá http://orcid.org/0000-0002-3715-1932
  • Sandra Esperanza Melo M. Universidad Nacional de Colombia, Facultad de Ciencias Agrarias, Departamento de Agronomía, Bogotá http://orcid.org/0000-0002-4875-7657
  • Luz Marina Melgarejo Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Biología, Laboratorio de Fisiología y Bioquímica Vegetal, Bogotá http://orcid.org/0000-0003-3148-1911




Relative growth rate, leaf area index, leaf number, net assimilation rate, Solanaceae.


The objective of this study was to evaluate the effects of nitrogen, phosphorus and potassium doses on tree tomato (Solanum betaceum Cav.) growth in the vegetative phase. This research was conducted under greenhouse conditions at the National University of Colombia, Bogotá. A randomized block design was employed to evaluate eight treatments with three replicates as follows: i) CC: commercial control, ii) CS: control without fertilization, iii) Low N: 10% of the recommended dose (DR); iv) Low P: 10% DR; v) Low K: 10% DR, vi) High N: 200% DR; vii) High P: 200% DR, and viii) High K: 200% DR. The fertilizer plan was adjusted according to the soil analysis and doses reported for the species. To determine plant growth, growth rate indexes were used based on the functional logistic model. The treatment without fertilization CS and High P reduced the leaf area, number of leaves, stem length, and dry mass of leaves of the tree tomatoes by about 50%, unlike the commercial control (CC). The Low K treatment increased the same variables by 70%, as well as the total dry mass. For growth rates, the Low K treatment resulted in the highest leaf area index and relative growth rate, and the High K treatment presented the highest crop growth rate.


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Ramírez-Soler, C H, Magnitskiy, S, Melo M., S E, & Melgarejo, L M. (2018). Effect of nitrogen, phosphorus, and potassium doses on tree tomato (<i>Solanum betaceum</i> Cav.) growth in the vegetative phase. Revista Colombiana de Ciencias Hortícolas, 12(1), 31–40. https://doi.org/10.17584/rcch.2018v12i1.7469



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