Metode Termografi Inframerah untuk Deteksi Dini Pepper yellow leaf curl virus pada Tanaman Cabai

Infrared Thermography for Early Detection of Pepper yellow leaf curl virus on Chili Plants Observations of plant pests and diseases are generally carried out by looking for visual symptoms for each disease target. Agricultural technology 4.0 began to be used for the development of plant disease detection methods. It was reported that there were differences in color and temperature between diseased and healthy plants which could be recorded by a thermal camera. This study aimed to determine the potential of the FLIR One Pro-IOS thermal camera to record differences in color and temperature between viral-infected and healthy chili plants. Chili plants in the greenhouse that were inoculated with Pepper yellow leaf curl virus (PYLCV) experienced an increase in temperature 3 days after inoculation (28.62 ℃) compared to plants that were not inoculated with PYLCV (27.32 ℃). Digital image recording of chili leaf samples from the field showed that plants infected by multiple viruses (Chilli veinal mottle virus, Pepper mottle virus and PYLCV) has higher temperature than those infected with a single virus. The lowest and highest mean temperatures were recorded in plant samples infected with PepMV (17.74 ℃) and mixed infected by PYLCV and ChiVMV (25.68 ℃). Digital images of virus-infected plants tend to show a predominance of bright yellow, while virus-free plants showed a predominance of dark purple. Further analysis confirmed higher digital numbers for diseased plant images than healthy plants. The thermography method has the potential to be an early detection method because it can detect viral infection before visual symptoms appear.Pengamatan hama dan penyakit tanaman umumnya dilakukan dengan mencari gejala visual untuk setiap sasaran tertentu. Teknologi pertanian 4.0 mulai digunakan untuk pengembangan metode deteksi penyakit tanaman. Dilaporkan bahwa terdapat perbedaan warna dan suhu antara tanaman sakit dengan tanaman sehat yang dapat direkam oleh kamera termal. Penelitian ini bertujuan untuk mengetahui potensi kamera termal FLIR One Pro- IOS untuk merekam perbedaan warna dan suhu antara tanaman cabai terinfeksi virus dan tanaman sehat. Tanaman cabai di rumah kaca yang diinokulasi Pepper yellow leaf curl virus (PYLCV) mengalami kenaikan suhu pada 3 hari setelah inokulasi (HSI) (28.62 ℃) dibandingkan dengan tanaman yang tidak diinokulasi PYLCV (27.32 ℃). Perekaman citra digital sampel daun tanaman cabai dari lapangan menunjukkan suhu yang lebih tinggi pada tanaman yang terinfeksi beberapa jenis virus (Chilli veinal mottle virus, Pepper mottle virus dan PYLCV) dibandingkan yang terinfeksi virus secara tunggal. Rata-rata suhu terendah dan tertinggi tercatat pada sampel tanaman yang terinfeksi PepMV (17.74 ℃) dan terinfeksi campuran oleh PYLCV dan ChiVMV (25.68 ℃). Citra digital tanaman yang terinfeksi virus cenderung menunjukkan dominasi warna kuning terang, sedangkan tanaman bebas virus menunjukkan dominasi warna ungu gelap. Analisis lebih lanjut mengonfirmasi bilangan digital yang lebih tinggi untuk citra tanaman sakit dibandingkan dengan tanaman sehat. Metode termografi berpotensi menjadi metode deteksi dini karena dapat mendeteksi infeksi virus sebelum gejala visual muncul. &nbsp