Efficiency of nitrogen and potassium application on phytotechnical parameters and yield of melon


  • Pablo Cristovão de Alencar Fernandes Universidade Federal do Piauí
  • Laércio da Silva Pereira Universidade Estadual Paulista Júlio de Mesquita Filho
  • Carlos José Gonçalves de Souza Lima Universidade Federal do Piauí
  • Gabriel Barbosa da Silva Júnior Universidade Federal do Piauí
  • Theuldes Oldenrique da Silva Santos Universidade Federal do Piauí
  • Regiana dos Santos Moura Universidade Federal do Recôncavo da Bahia
  • Everaldo Moreira da Silva Universidade Federal do Piauí




Cucumis melo, Fertigation, Fertilizer use efficiency.


Phytotechnical parameters, yield and fertilizer use efficiency are relevant to the rational management of fertigation, especially in cultivation of high technological level. Thus, the objective was to evaluate the influence and efficiency of nitrogen (N) and potassium (K) application on the phytotechnical parameters, yield and nutritional efficiency of yellow melon in a fertigation system. The experiment was conducted in the city of Bom Jesus-PI, Brazil, from January to April 2016, in a strip-block design with four replicates, and the treatments consisted of five N levels (0, 45, 90, 135 and 180 kg ha-1 in the form of urea) and five K levels (0, 60, 120, 180 and 240 kg ha-1 in the form of potassium chloride), applied through fertigation. Collar diameter, main branch length, leaf chlorophyll content, number of leaves, leaf area index, biomass accumulation, fruit yield, and N and K use efficiencies were evaluated. Applications of 180 kg ha-1 of N and 240 kg ha-1 of K, respectively, led to the highest growth of the melon, while maximum production was obtained with the use of 112.50 and 165 kg ha-1 of N and K, respectively. The efficiency of N and K use decreased with increasing levels.


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How to Cite

FERNANDES, P.C. de A.., PEREIRA, L. da S.., LIMA, C.J.G. de S.., SILVA JÚNIOR, G.B. da ., SANTOS, T.O. da S.., MOURA, R. dos S.. and SILVA, E.M. da .., 2020. Efficiency of nitrogen and potassium application on phytotechnical parameters and yield of melon. Bioscience Journal [online], vol. 36, pp. 249–258. [Accessed15 April 2024]. DOI 10.14393/BJ-v36n0a2020-53595. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/53595.