Optical Sensors for Precision Agriculture: An Outlook

Lucas de Arruda Viana *

Department of Agricultural Engineering, Federal University of Viçosa, Brazil.

Deborah Campos Tomaz

Department of Chemistry, Federal University of Viçosa, Brazil.

Rodrigo Nogueira Martins

Department of Agricultural Engineering, Federal University of Viçosa, Brazil.

Jorge Tadeu Fim Rosas

Department of Agricultural Engineering, Federal University of Viçosa, Brazil.

Fernando Ferreira Lima dos Santos

Department of Agricultural Engineering, Federal University of Viçosa, Brazil.

Marcelo Fagundes Portes

Department of Agricultural Engineering, Federal University of Viçosa, Brazil.

*Author to whom correspondence should be addressed.


Abstract

The growing human population added to the rural exodus has aggravated the pressure in the agricultural sector for greater production. Faced with this problem, research has developed optical sensors for more productive agriculture with the purpose of minimizing the effects of rural exodus, obtaining rapid information and promoting the rational use of natural resources. Optical sensors have a differential consisting of the ability to use the spectral signature of an attribute or part of it to gain information, often not obvious. This review provides recent advances in optical sensors as well as future challenges. The studies have shown the wide range of applicability of optical sensors in agriculture, from detection of weeds to identification of soil fertility, which favors management in different areas of agriculture. The main limitation to the use of optical sensors in agriculture in most parts of the world has been the cost of purchasing the devices, especially in poor countries. So one of the future challenges is the reduction of final prices paid by consumers.

Keywords: Smartphone, weed, hydric stress, pathogen detection, soil fertility


How to Cite

Viana, L. de A., Tomaz, D. C., Martins, R. N., Rosas, J. T. F., Santos, F. F. L. dos, & Portes, M. F. (2019). Optical Sensors for Precision Agriculture: An Outlook. Journal of Experimental Agriculture International, 35(2), 1–9. https://doi.org/10.9734/jeai/2019/v35i230203

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