DEVELOPMENT OF AN ELECTRONIC CONTROLLER FOR LETTUCE PRODUCTION IN GREENHOUSES

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Authors

DOI:

https://doi.org/10.32404/rean.v7i3.4043

Abstract

The objective of this study was to develop an electronic controller for microclimate control in greenhouses, as well as to verify if the automated control system affects the productivity of two varieties of lettuce “Lactuca sativa”. The control system was developed based on the Atmega 2560 and compatible transducers. An experimental field analysis was carried out over a production cycle for two lettuce varieties. The experimental results showed that the designed equipment worked according to the implemented programming algorithm. However, the ventilation, nebulization and shading actuators did not control environmental variables, due to under sizing. The irrigation process was correctly controlled throughout the experimental period. The electronic controller promoted increase in the productivity of lettuce varieties. There was increase of 28% in total fresh weight; 10% in stem diameter; 7 and 8% in height gain and average diameter, respectively.

Author Biographies

Aldir Carpes Marques Filho, Universidade Estadual Paulista Júlio de Mesquita Filho, Campus Botucatu, Botucatu.

Eng. Agr. Mestre em Mecatrônica - Depto. Eng. Rural - UNESP

Jean Paulo Rodrigues, Instituto Federal de Santa Catarina, Campus Florianópolis, Florianópolis.

Prof. Dr. Eng. Eletricista - Mecatrônica e Eletrônica de potência - IFSC

Simone Daniela Sartorio de Medeiros, Universidade Federal de Santa Catarina, Campus Florianópolis, Florianópolis.

Prof. Dr. em Estatística e Experimentação Agronômica - UFSC

Sergio Ricardo Rodrigues de Medeiros, Universidade Federal de Santa Catarina, Campus Florianópolis, Florianópolis.

Prof. Dr. Eng. Agr. - Dpeto Engenharia Rural - UFSC

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Published

2020-09-09

How to Cite

Marques Filho, A. C., Rodrigues, J. P., Sartorio de Medeiros, S. D., & Rodrigues de Medeiros, S. R. (2020). DEVELOPMENT OF AN ELECTRONIC CONTROLLER FOR LETTUCE PRODUCTION IN GREENHOUSES. REVISTA DE AGRICULTURA NEOTROPICAL, 7(3), 65–72. https://doi.org/10.32404/rean.v7i3.4043