Vol. 2 No. 2 (2018)
Artículos Originales

Effect of different doses of two organic amendments in the components of performance, in lettuce (lactuca sativa)

Rosanna Britos
Instituto Paraguayo de Tecnología Agraria, Paraguay
Bio
Hugo Valiente
Instituto Paraguayo de Tecnología Agraria, Paraguay
Bio
Beatriz Gómez
Instituto Paraguayo de Tecnología Agraria, Paraguay
Bio
Marcos Vega
Instituto Paraguayo de Tecnología Agraria, Paraguay
Bio
Danny Ríos
Universidad Nacional de Asunción, Paraguay
Bio
Arturo Estigarribia
Universidad Nacional de Asunción, Facultad de Ciencias Agrarias, Paraguay
Bio

Published 2020-12-05

Keywords

  • Lactuca sativa,
  • Humus de lombriz,
  • Estiércol vacuno,
  • Dosis
  • Lactuca sativa,
  • Worm humus,
  • cattle manure,
  • dose

How to Cite

Britos, R. ., Valiente, H. ., Gómez, B. ., Vega, M. ., Ríos, D. ., & Estigarribia, A. . (2020). Effect of different doses of two organic amendments in the components of performance, in lettuce (lactuca sativa). Revista De Investigación Científica Y Tecnológica, 2(2), 53–60. https://doi.org/10.36003/Rev.investig.cient.tecnol.V2N2(2018)6

Abstract

Lettuce (Lactuca sativa), the most cultivated and consumed leaf vegetable in Paraguay, is considered nutrient demanding because it requires relatively large quantities in a relatively short period of time. In order to evaluate the effect of different doses of two organic amendments, cattle manure and earthworm humus in production, it was developed in the Paraguayan Institute of Agricultural Technology (IPTA) – Caacupé, Paraguay, an experiment using a randomized complete block design, with eight treatments and three repetitions. The treatments were: a) Worm humus T1 = 0 kg m-2, T2 = 0.4 kg m-2, T3 = 0.6 kg m-2, T4 = 0.8 kg m-2; b) Cattle manure T5 = 0 kg m-2, T6 = 2 kg m-2, T7 = 4 kg m-2 and T8 = 6 kg m-2. The genetic material used was the lettuce of the Graciela variety (Pirati type). The surface of each experimental unit was 2 m2, with 4 rows of lettuce per unit, with a distance of 0.25 m between rows and 0.25 m between plants. The distance between experimental units was 0.50 m. The total area of the experiment was 78 m2 with 864 plants. The variables evaluated were plant height, commercial fresh mass, fresh leaf mass, dry mass, number of leaves, fresh root weight and dry root weight. The data were subjected to analysis of variance (ANAVA), evaluating the differences between means by the Tukey test at 5% error probability. The results obtained indicate that the application of worm humus and cattle manure did not exert any effect on the yield components in a lettuce crop cycle.

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