Agricultural and Biosystems Engineering
- Volume 2 Issue 2
- /
- Pages.75-80
- /
- 2001
- /
- 1229-8441(pISSN)
Diagnoses of Abiotic Stress in Cucumber Plant with Non-destructive Physiological Instruments
- Sung, Jae Hoo (Research Engineering, National Agricultural Mechanization Research Institute, RDA) ;
-
Suh, Sang Ryong
(Professor, Dept. of Bio Systems & Agricultural Engineering, Institute of Ag. Sci. and Tech., Chonnam National University)
;
- Chung, Gap Chae (Professor, Dept. of Applied Plant Science, Institute of Ag. Sci. and Tech., Chonnam National University) ;
- Lee, K.H. (Research Engineer, National Agricultural Mechanization Research Institute, RDA)
- Published : 2001.12.01
Abstract
This paper describes method to diagnose abiotic stresses such ad low root temperature, low light intensity and high salinity in cucumber plants with several physiological instruments. The stresses could be detected by measuring and analyzing the differences in chlorophyll content, temperature difference between leaf and atmosphere and light absorptance at wavelengths of 480, 560, 710, 1420 and 1650nm. It was concluded that the stresses could be first diagnosed from the 3rd to 10th day after treatment and the overall accuracy of diagnosis was estimated between 25 and 75%. near-infrared spectrometer showed better and earlier detection than the other instruments investigated.