Desenvolvimento instrumental para determinação direta da perda de água em plantas por meio do monitoramento do fluxo de seiva - DOI: 10.4025/actasciagron.v27i4.1692

Antonio Odair Santos; Francisca Maria Rosiki Bigas-Adão; Camila de Barros; José Luiz Hernandez

doi:10.4025/actasciagron.v27i4.1692

Instrumental improvement for assessment of plant water uptake through sap flux monitoring - DOI: 10.4025/actasciagron.v27i4.1692

Antonio Odair Santos IAC
Francisca Maria Rosiki Bigas-Adão IAC
Camila de Barros IAC
José Luiz Hernandez IAC

DOI: https://doi.org/10.4025/actasciagron.v27i4.1692

Abstract

Crop water monitoring is important for a detailed irrigation control. It is desirable to develop reliable and portable techniques to properly assess the water uptake of agricultural crops. An experiment was conducted in the IAC/Jundiaí, state of São Paulo aiming to achieve such developments. An integrated system based on heat pulse technique was designed and built in order to assess water uptake. Different probe configurations were tested, aiming to find the best sensor profile for field usage. Field and laboratory grown maize were used to calibrate the system. Testing the system on maize stems resulted in a coherent relationship between heat transport and sap flux, for two of the sensor configurations tested. Field results of water uptake determination, obtained comparatively with standard methodology, agreed with the daily-paired data and yielded reasonable values based on statistical Willmot index.

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Author Biography

Antonio Odair Santos, IAC

Possui graduação em Engenharia Agronômica pela Universidade do Estado de Santa Catarina, Mestrado e Doutorado em Fitotecnia, pela Universidade Federal do Rio Grande do Sul (UFRGS); Pós-Doutorado pela California State University-Fresno [Viticulture and Enology Research Center]. Atualmente é Pesquisador do Instituto Agronômico (IAC), atuando principalmente nos seguintes temas: relação microclima e manejo da videira sobre a qualidade uva/vinho, viticultura de precisão Currículo Lattes

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Published

2008-04-07

How to Cite

Santos, A. O., Bigas-Adão, F. M. R., Barros, C. de, & Hernandez, J. L. (2008). Instrumental improvement for assessment of plant water uptake through sap flux monitoring - DOI: 10.4025/actasciagron.v27i4.1692. Acta Scientiarum. Agronomy, 27(4), 687-695. https://doi.org/10.4025/actasciagron.v27i4.1692

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Issue

Vol 27 No 4 (2005)

Section

Engineering

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