The Potential of a Low-Cost Thermal Camera for Early Detection of Temperature Changes in Virus-Infected Chili Plants

The Potential of a Low-Cost Thermal Camera for Early Detection of Temperature Changes in Virus-Infected Chili Plants

area under curve; k-nearest neighbors; mosaic virus detection; naïve bayes, thermography

One effect of viral infection on plant physiology is increased stomata closure so that the transpiration rate is low,whichin turn causes an increase in leaf temperature. Changes in plant leaf temperature can be measured by thermography using high-resolution thermal cameras.The resultscan be used as an indicator of virus infection,even before the appearance of visible symptoms. However, the higher the sensor resolution of thethermalcamera, the more expensive it is, which is an obstacle in developing the method more widely. This article describes the potential of thermography in detectingTobacco mosaic virusinfection in chili-pepperplants using a low-cost camera. A FLIR C2 camera was used to record imagesof plants in two treatment groups, non-inoculated (V0) and virus-inoculated plants (V1). Significantly, V1 had a lower temperature at 8 and 12 days after inoculation (dai) than those of V0,but their temperature was higher than V0 before symptoms were visible, i.e., at 17 dai. Thermography using low-cost thermal cameras has potencyto detect early viral infection at 8 dai with accuracy levels(AUC) of 80.0% and 86.5% based on k-Nearest Neighborsand Naïve Bayes classifiers, respectively

Asmar Hasan1,2, Widodo1, Kikin Hamzah Mutaqin1, Muhammad Taufik2& Sri Hendrastuti Hidayat1

https://journals.itb.ac.id/index.php/jictra/article/view/17837/6148

Bogor Agricultural University

2023

Fajar bagus W

PDF

English

Text