Lowland rice yield estimates based on air temperature and solar radiation

Authors

  • M.J. Pedro Júnior IAC; Instituto Agronômico
  • P.C. Sentelhas IAC; Instituto Agronômico
  • A.V.C. Moraes IAC; Instituto Agronômico
  • O.V. Villela IAC; Instituto Agronômico

DOI:

https://doi.org/10.1590/S0103-90161995000100017

Keywords:

lowland rice, agrometeorological model, IAC-242, IAC-100, IAC-101, IAC-102

Abstract

Two regression equations were developed to estimate lowland rice yield as a function of air temperature and incoming solar radiation, during the crop yield production period in Pindamonhangaba, SP, Brazil. The following rice cultivars were used: IAC-242, IAC-100, IAC-101 and IAC-102. The value of optimum air temperature obtained was 25.0°C and of optimum global solar radiation was 475 cal.cm-2, day-1. The best agrometeorological model was the one that related least deviation of air temperature and solar radiation in relation to the optimum value obtained through a multiple linear regression. The yield values estimated by the model showed good fit to actual yields of lowland rice (less than 10%).

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Published

1995-04-01

Issue

Vol. 52 No. 1 (1995)

Section

Articles

License

All content of the journal, except where identified, is licensed under a Creative Common attribution-type BY-NC.

How to Cite

Lowland rice yield estimates based on air temperature and solar radiation . (1995). Scientia Agricola, 52(1), 96-100. https://doi.org/10.1590/S0103-90161995000100017