Development of an Open-Source Thermal Image Processing Software for Improving Irrigation Management in Potato Crops (Solanum tuberosum L.)

Accurate determination of plant water status is mandatory to optimize irrigation scheduling and thus maximize yield. Infrared thermography (IRT) can be used as a proxy for detecting stomatal closure as a measure of plant water stress. In this study, an open-source software (Thermal Image Processo...

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Autores principales: Cucho-Padin, Gonzalo, Rinza, Javier, Ninanya, Johan, Loayza, Hildo, Quiroz, Roberto, Ramírez, David A.
Formato: Artículo
Lenguaje:Inglés
Publicado: 2020
Acceso en línea:https://repositorio.catie.ac.cr/handle/11554/9457
http://dx.doi.org/10.3390/s20020472
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author Cucho-Padin, Gonzalo
Rinza, Javier
Ninanya, Johan
Loayza, Hildo
Quiroz, Roberto
Ramírez, David A.
author_browse Cucho-Padin, Gonzalo
Loayza, Hildo
Ninanya, Johan
Quiroz, Roberto
Ramírez, David A.
Rinza, Javier
author_facet Cucho-Padin, Gonzalo
Rinza, Javier
Ninanya, Johan
Loayza, Hildo
Quiroz, Roberto
Ramírez, David A.
author_sort Cucho-Padin, Gonzalo
collection Repositorio CATIE
description Accurate determination of plant water status is mandatory to optimize irrigation scheduling and thus maximize yield. Infrared thermography (IRT) can be used as a proxy for detecting stomatal closure as a measure of plant water stress. In this study, an open-source software (Thermal Image Processor (TIPCIP)) that includes image processing techniques such as thermal-visible image segmentation and morphological operations was developed to estimate the crop water stress index (CWSI) in potato crops. Results were compared to the CWSI derived from thermocouples where a high correlation was found (rPearson = 0.84). To evaluate the effectiveness of the software, two experiments were implemented. TIPCIP-based canopy temperature was used to estimate CWSI throughout the growing season, in a humid environment. Two treatments with different irrigation timings were established based on CWSI thresholds: 0.4 (T2) and 0.7 (T3), and compared against a control (T1, irrigated when soil moisture achieved 70% of field capacity). As a result, T2 showed no significant reduction in fresh tuber yield (34.5 3.72 and 44.3 2.66 t ha..1), allowing a total water saving of 341.6 63.65 and 515.7 37.73 m3 ha..1 in the first and second experiment, respectively. The findings have encouraged the initiation of experiments to automate the use of the CWSI for precision irrigation using either UAVs in large settings or by adapting TIPCIP to process data from smartphone-based IRT sensors for applications in smallholder settings.
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spelling RepoCATIE94572022-08-05T19:04:24Z Development of an Open-Source Thermal Image Processing Software for Improving Irrigation Management in Potato Crops (Solanum tuberosum L.) Cucho-Padin, Gonzalo Rinza, Javier Ninanya, Johan Loayza, Hildo Quiroz, Roberto Ramírez, David A. Accurate determination of plant water status is mandatory to optimize irrigation scheduling and thus maximize yield. Infrared thermography (IRT) can be used as a proxy for detecting stomatal closure as a measure of plant water stress. In this study, an open-source software (Thermal Image Processor (TIPCIP)) that includes image processing techniques such as thermal-visible image segmentation and morphological operations was developed to estimate the crop water stress index (CWSI) in potato crops. Results were compared to the CWSI derived from thermocouples where a high correlation was found (rPearson = 0.84). To evaluate the effectiveness of the software, two experiments were implemented. TIPCIP-based canopy temperature was used to estimate CWSI throughout the growing season, in a humid environment. Two treatments with different irrigation timings were established based on CWSI thresholds: 0.4 (T2) and 0.7 (T3), and compared against a control (T1, irrigated when soil moisture achieved 70% of field capacity). As a result, T2 showed no significant reduction in fresh tuber yield (34.5 3.72 and 44.3 2.66 t ha..1), allowing a total water saving of 341.6 63.65 and 515.7 37.73 m3 ha..1 in the first and second experiment, respectively. The findings have encouraged the initiation of experiments to automate the use of the CWSI for precision irrigation using either UAVs in large settings or by adapting TIPCIP to process data from smartphone-based IRT sensors for applications in smallholder settings. 2020-03-05T15:16:03Z 2020-03-05T15:16:03Z 2020 Artículo https://repositorio.catie.ac.cr/handle/11554/9457 http://dx.doi.org/10.3390/s20020472 en info:eu-repo/semantics/openAccess application/pdf
spellingShingle Cucho-Padin, Gonzalo
Rinza, Javier
Ninanya, Johan
Loayza, Hildo
Quiroz, Roberto
Ramírez, David A.
Development of an Open-Source Thermal Image Processing Software for Improving Irrigation Management in Potato Crops (Solanum tuberosum L.)
title Development of an Open-Source Thermal Image Processing Software for Improving Irrigation Management in Potato Crops (Solanum tuberosum L.)
title_full Development of an Open-Source Thermal Image Processing Software for Improving Irrigation Management in Potato Crops (Solanum tuberosum L.)
title_fullStr Development of an Open-Source Thermal Image Processing Software for Improving Irrigation Management in Potato Crops (Solanum tuberosum L.)
title_full_unstemmed Development of an Open-Source Thermal Image Processing Software for Improving Irrigation Management in Potato Crops (Solanum tuberosum L.)
title_short Development of an Open-Source Thermal Image Processing Software for Improving Irrigation Management in Potato Crops (Solanum tuberosum L.)
title_sort development of an open source thermal image processing software for improving irrigation management in potato crops solanum tuberosum l
url https://repositorio.catie.ac.cr/handle/11554/9457
http://dx.doi.org/10.3390/s20020472
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