SUNFLOWER MAXIMUM YIELD PRODUCTION BASED ON SOLAR RADIATION AND TEMPERATURE: I. ABSORPTION OF PHOTOSYNTHETICALLY ACTIVE RADIATION.

Authors

NIDIO ANTONIO BARNI
MOACIR ANTÔNIO BERLATO
HOMERO BERGAMASCHI
JOÃO RIBOLDI

Keywords:

maximum yield (Ym); solar radiation; sunflower development.

Abstract

Growth and maximum yield (Ym) of sunflower was modeled based on the effective temperature (degree-day s) and photosyntheticaly active radiation absorved and accumulated (PARaa) under well watered conditions. Experimentawere performed on a field site at Taquari (RS) during two growth seasons (1991/92, 1992/93). The results showed that theleaf ares index (LAI) can be stimated from the sum of the efective temperature. The absortion of PAR is very closelyassociated with the LAI and the canopy structure, that is represented by the extinction coeficient (K).

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Published

1995-07-06

How to Cite

BARNI, NIDIO ANTONIO; BERLATO, MOACIR ANTÔNIO; BERGAMASCHI, HOMERO; RIBOLDI, JOÃO. SUNFLOWER MAXIMUM YIELD PRODUCTION BASED ON SOLAR RADIATION AND TEMPERATURE: I. ABSORPTION OF PHOTOSYNTHETICALLY ACTIVE RADIATION. Pesquisa Agropecuária Gaúcha, [S. l.], v. 1, n. 2, p. 185–199, 1995. Disponível em: https://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/561. Acesso em: 1 jun. 2025.

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Issue

Vol. 1 No. 2 (1995): PESQ. AGROP. GAÚCHA

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Article

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The authors declare that the work has not been previously published, nor sent simultaneously for publication in another journal and that they agree with the submission, content and transfer of the publication rights of the article in question to the scientific journal Pesquisa Agropecuária Gaúcha - PAG. The authors assume full responsibility for the originality of the article, and may incur on them any charges arising from claims by third parties in relation to the authorship of the article. The full reproduction of the journal's articles in other free-to-use electronic media is permitted under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license.

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