Tusi, Ahmad and Suhandy, Diding and Agista, Darma and Oktafri, Oktafri (2015) Penentuan Jumlah Titik Pengambilan Spektra Suhu Daun Tanaman Kopi Menggunakan Infrared Thermometer. In: Seminar Nasional Sains dan Teknologi VI, 3 November 2015, Bandar Lampung Indonesia.

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Abstract

Leaf temperature has long been recognized as an indicator of plant water status and as a potential tool for irrigation scheduling. In the present study, the potential of using leaf thermal for an in-field estimation of the water status of Robusta Coffee Plant under a range of different water deficit in greenhouse was investigated for determining the precise number of spectra acquisition on the coffee leaf. Average thermal leaves were taken with an infrared thermometer on single, two, three, and six spectra acquisition. Specific leaves that appeared on the number spectra acquisition were compared to soil moisture condition and evapotranspiration. The lowest average daily evapotranspiration Robusta coffee plants was 3.9 mm/day at 60-80 cbar treatment, while 20-40 cbar was the largest evapotranspiration about 4,1 mm/day. It can be seen with the soil depletion fraction value is inversely proportional to the value of the different between leaf's surface temperature and the ambient temperature (Tc-Ta). The lower of soil depletion fraction will impact to the lower (Tc-Ta). The precise number of spectra acquisition should be done by taking the average of 2 points in the middle of the leaf (point 3 and 4), the average three-point (points 1, 4, and 5), or single measurement in the central part of the leaf (point 4). Taking a single measurement of thermal spectra acquisition on single-leaf coffee with infrared thermometer can provide a rapid and non-destructive method for monitoring the coffee plant water status

Item Type:	Conference or Workshop Item (Speech)
Subjects:	Q Science > Q Science (General)
Depositing User:	Mr. Ahmad Tusi
Date Deposited:	15 May 2023 01:21
Last Modified:	15 May 2023 01:21
URI:	http://repository.lppm.unila.ac.id/id/eprint/51574

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