Growth dynamic of summer squash in two crop seasons - doi: 10.4025/actasciagron.v33i2.5952

Authors

  • André Samuel Strassburger Universidade Federal de Pelotas Author
  • Roberta Marins Nogueira Peil Universidade Federal de Pelotas Author
  • Leandro Andrade da Fonseca Universidade Federal de Pelotas Author
  • Tiago Zanatta Aumonde Universidade Federal de Pelotas Author
  • Carlos Rogério Mauch Universidade Federal de Pelotas Author

DOI:

https://doi.org/10.4025/actasciagron.v33i2.5952

Keywords:

Cucurbita pepo L., dry matter production, hydroponics, leaf area, solar radiation, growth analysis

Abstract

The objective of this work was to quantify the growth rates, dry matter production and distribution of summer squash grown in raw rice husk medium with recirculating nutrient solution, in two crop seasons: spring-summer 2005 and summer-autumn 2006, which are periods characterized by high and low solar radiation availability, respectively. Each treatment corresponded to a sampling date and dry matter production was evaluated at 18, 32, 46 and 68 days after setting (DAS) in spring-summer, and 15, 29, 43 and 55 DAS in the summer-autumn crop season. Dry matter production was highest in high solar radiation availability conditions. In those conditions, fruits were characterized as the largest drains of the crop, which did not happen in low solar radiation availability. The growth rates (crop, fruits, shoot organs and relative crop rates) also were higher in high solar radiation availability conditions. Leaf area ratio and specific leaf area showed similar dynamics to the relative crop rate, decreasing according with the time-course of the crop.

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Author Biographies

  • André Samuel Strassburger, Universidade Federal de Pelotas
    Universidade Federal de Pelotas, Faculdade de Agronomia Eliseu Maciel, Departamento de Fitotecnia. C.P. 354, CEP: 96010-900, Pelotas, Rio Grande do Sul.
  • Roberta Marins Nogueira Peil, Universidade Federal de Pelotas
    Universidade Federal de Pelotas, Faculdade de Agronomia Eliseu Maciel, Departamento de Fitotecnia. C.P. 354, CEP: 96010-900, Pelotas, Rio Grande do Sul.
  • Leandro Andrade da Fonseca, Universidade Federal de Pelotas
    Universidade Federal de Pelotas, Faculdade de Agronomia Eliseu Maciel, Departamento de Fitotecnia. C.P. 354, CEP: 96010-900, Pelotas, Rio Grande do Sul.
  • Tiago Zanatta Aumonde, Universidade Federal de Pelotas
    Universidade Federal de Pelotas, Faculdade de Agronomia Eliseu Maciel, Departamento de Fitotecnia. C.P. 354, CEP: 96010-900, Pelotas, Rio Grande do Sul.
  • Carlos Rogério Mauch, Universidade Federal de Pelotas
    Universidade Federal de Pelotas, Faculdade de Agronomia Eliseu Maciel, Departamento de Fitotecnia. C.P. 354, CEP: 96010-900, Pelotas, Rio Grande do Sul.

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Published

2011-02-16

Issue

Vol. 33 No. 2 (2011)

Section

Crop Production

License

DECLARATION OF ORIGINALITY AND COPYRIGHTS

I Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal. 

The copyrights belong exclusively to the authors. Published content is licensed under Creative Commons Attribution 4.0 (CC BY 4.0) guidelines, which allows sharing (copy and distribution of the material in any medium or format) and adaptation (remix, transform, and build upon the material) for any purpose, even commercially, under the terms of attribution.

 

 

How to Cite

Growth dynamic of summer squash in two crop seasons - doi: 10.4025/actasciagron.v33i2.5952. (2011). Acta Scientiarum. Agronomy, 33(2), 283-289. https://doi.org/10.4025/actasciagron.v33i2.5952
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