Yield potential of Cassava Crop in a function of planting date in a subtropical environment

Authors

  • Josias Moreira Borges Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.
  • Alencar Junior Zanon Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.
  • Michel Rocha da Silva Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.
  • Darlan Scapini Balest Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.
  • Alexandre Ferigolo Alves Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.
  • Charles Patrick de Oliveira de Freitas Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.
  • Vanderlei Both Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.
  • Amanda Thirza Lima Santos Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.

DOI:

https://doi.org/10.5965/223811711932020263

Keywords:

Manihot esculenta Crantz, climate risk zoning, food security

Abstract

Studies of potential and yield potential are extremely important worldwide, to identify and narrow yield potential. The objective of this study was to simulate cassava yield potential and water-limited yield potential using the Simanihot model. Cassava yield gap and the planting date effect were estimated for two locations in Rio Grande do Sul, Brazil (Santa Maria and São Luiz Gonzaga). Due to weather conditions, in Santa Maria cassava cycle was defined as annual and São Luiz Gonzaga as annual and biannual. Planting dates were set from August 1st 2017 to May 1st 2018, and harvested on Jun 15th 2018. Results showed that cassava express higher yield potential on early planting (August 10th), achieving 64.6 Mg ha-1 and 50.2 Mg ha-1 of tuber roots and 47.3 Mg ha-1 and 38.9 Mg ha-1 of aboveground biomass, in São Luiz Gonzaga and Santa Maria, respectively. Planting dates after the beginning of the climatic risk zoning, present a yield reduction of 0.364 Mg ha-1 in São Luiz Gonzaga and 0.282 Mg ha-1 in Santa Maria, for each day of delay on the planting date. These results indicate that planting cassava during the first ten days of August expresses the highest yields and reduces the gaps for both locations.

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Published

2020-09-30

How to Cite

BORGES, Josias Moreira; ZANON, Alencar Junior; SILVA, Michel Rocha da; BALEST, Darlan Scapini; ALVES, Alexandre Ferigolo; FREITAS, Charles Patrick de Oliveira de; BOTH, Vanderlei; SANTOS, Amanda Thirza Lima. Yield potential of Cassava Crop in a function of planting date in a subtropical environment. Revista de Ciências Agroveterinárias, Lages, v. 19, n. 3, p. 263–269, 2020. DOI: 10.5965/223811711932020263. Disponível em: https://revistas.udesc.br/index.php/agroveterinaria/article/view/15675. Acesso em: 19 nov. 2024.

Issue

Vol. 19 No. 3 (2020)

Section

Research Article - Science of Plants and Derived Products

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