Dr. Ernesto Lahoz Profile

Dr. Ernesto Lahoz

at CREA

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Proceedings Article | 28 October 2022 Poster + Paper

Comparison of active thermography techniques for copper detection on plants

Massimo Rippa, Valerio Battaglia, Rossella Curcio, Michele Cermola, Ernesto Lahoz, Pasquale Mormile

Proceedings Volume 12262, 1226216 (2022) https://doi.org/10.1117/12.2636029

KEYWORDS: Copper, Thermography, Agriculture, Remote sensing, Sensing systems, Metals, Lamps

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Active Thermography (AT) is a well-known non-contact and non-invasive imaging technique that has gained great interests in agriculture in recent years. It has been used to evaluate physical and physiological characteristics of plants such as: transpiration rates, heat capacity of the leaves, local water content, response to UV interaction and it fits well with emerging demands of the precision agriculture management strategy. According to this technique, the surface of the sample under investigation is stimulated using an external heat source and its thermal response is detected and recorded using infrared camera. Different strategies can be used for both the measurement protocol and for data analysis. Copper has been widely used in agriculture as a fungicide and bactericide for many decades. Applied on leaf, copper based fungicide (CBF) remains deposited and it is not absorbed into plant tissues, causing accumulation problems that needs to be monitored and controlled, also by using modern technologies. In this work, we test and compare different AT methods to detect and to monitor the presence of CBF on leaves. Our experimental results demonstrate that methodological approaches based on AT can be used to engineer effective remote tools to evaluate in real-time the presence of copper on plants, allowing a tentative of quantification and, therefore, to optimize its use in the agricultural practices.

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