African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6214

Full Length Research Paper

Yield of different varieties of cassava (Manihot esculenta Crantz) in different harvest intervals

Wilfrido Meza Giménez
  • Wilfrido Meza Giménez
  • Facultad de Ciencias Agrarias, Universidad Nacional de Asunción, Pedro Juan Caballero, Paraguay.
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Sonia Liliana Recalde Sanabria
  • Sonia Liliana Recalde Sanabria
  • Facultad de Ciencias Agrarias, Universidad Nacional de Asunción, Pedro Juan Caballero, Paraguay.
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Gustavo Daniel Vega Britez
  • Gustavo Daniel Vega Britez
  • Facultad de Ciencias Agrarias, Universidad Nacional de Asunción, Pedro Juan Caballero, Paraguay.
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Sixto Barreto Pérez
  • Sixto Barreto Pérez
  • Facultad de Ciencias Agrarias, Universidad Nacional de Asunción, Pedro Juan Caballero, Paraguay.
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Derlys Salinas Cohene
  • Derlys Salinas Cohene
  • Facultad de Ciencias Agrarias, Universidad Nacional de Asunción, Pedro Juan Caballero, Paraguay.
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José Augusto Velazquez Duarte
  • José Augusto Velazquez Duarte
  • Facultad de Ciencias Agrarias, Universidad Nacional de Asunción, Pedro Juan Caballero, Paraguay.
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Victorina Barreto Pérez
  • Victorina Barreto Pérez
  • Facultad de Ciencias Agrarias, Universidad Nacional de Asunción, Pedro Juan Caballero, Paraguay.
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Laiana Patricia Paredes Lopes
  • Laiana Patricia Paredes Lopes
  • Facultad de Ciencias Agrarias, Universidad Nacional de Asunción, Pedro Juan Caballero, Paraguay.
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Nelson David Lesmo Duarte
  • Nelson David Lesmo Duarte
  • Facultad de Ciencias Agrarias, Universidad Nacional de Asunción, Pedro Juan Caballero, Paraguay.
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  •  Received: 24 July 2019
  •  Accepted: 03 October 2019
  •  Published: 30 November 2019

Abstract

This experiment was installed in the experimental plot of the Faculty of Agrarian Sciences, National University of Asunción Department of Amambay, Paraguay, with the objective of evaluating the yield of four varieties of cassava in three harvest intervals. The experimental design was randomized blocks, with four treatments (Seda, Pomberi, Sa’yju and Tacuara) and five repetitions. The spacing was 0.8 x 0.7 m, with a population density of 17,870 plants per hectare. Root quantity per plant, root weight per plant, amount of commercial and non-commercial root, weight of commercial and non-commercial root, yield per hectare were evaluated at eight, ten and twelve months after planting. The root number per plant was infuenced (p <0.05) by the varieties, and was higher for the variety Seda; number and weight of commercial root which did not vary (p> 0.05) depending on the varieties and harvest intervals. The root weight per plant does not present significant differences (p> 0.05) between varieties and harvest intervals. Commercial root weight and root yield were significantly (p <0.05) higher in harvest intervals performed 12 months after sowing, where the Tacuara variety showed the highest yield. Variety of table or sweet manioc Tacuara presents superior performance at 12 months after sowing. Cassava varieties tested have acceptable production parameters, and the knowledge of them as well as cutting interval may allow better use mainly by small farmers. It is recommended to evaluate the influence of planting density on the varieties and cutting interval.

Keywords: Manihot esculenta, agronomic behavior, cultivars, harvest index.