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Volume: 29 | Article ID: art00041
Use of spectral information for red scale pest control
  DOI :  10.2352/issn.2169-2629.2021.29.253  Published OnlineNovember 2021

Decreasing the use of pesticides is one of the main goals of current agriculture, which requires fast, precise and continuous assessments of crop pests. Citrus pests cause a lot of damage worldwide and the techniques to evaluate them are mainly based on manual, time-consuming readings of insects stuck on traps spread over the crops. This is the case of red scale insects, whose control is notably challenging due to their small size and high reproduction rate. Hence, in this work, we carry out a spectral characterization of this insect in the visible range through spectrometric devices, microscopy and hyperspectral imaging technology to analyze the feasibility of using this information as a means of automatically identifying specimens belonging to this species in this era of precision agriculture. The results obtained show that spectral reflectance differences between red scales and other insects can be recorded at long (red) wavelengths and that red scales are morphologically different, i.e., smaller and more rounded. A reflectance ratio computed from spectral images taken at 774 nm and 410 nm is proposed as a new approach for automated discrimination of red scales from other insects.

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Carlos E. García-Guerra, Francisco J. Burgos-Fernández, Eloi Canals, Fernando Díaz-Doutón, Abel Zaragoza, Albert Virgili, Meritxell Vilaseca, "Use of spectral information for red scale pest controlin Proc. IS&T 29th Color and Imaging Conf.,  2021,  pp 253 - 257,

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