Comparison of Nutrient Deficient Stress Diagnoses of Cucumber Plant Using Non-Destructive Physiological Instruments

  • Suh, Sang Ryong (Department Biosystems & Agricultural Engineering, Institute of Ag. Sci, and Tech., Chonnam National University) ;
  • Sung, Jae Hoon (Research Engineer, national Agricultural Mechanization Research Institute, RDA) ;
  • Chung, Gap Chae (Department of Applied Plant Science, Institute of Ag. Sci. and Tech., Chonnam National University)
  • Published : 2001.06.01

Abstract

This paper represents methods to diagnose nutrient deficient stresses of cucumber plants using several physiological instruments. The stresses could be detected by measuring and analyzing the difference of chlorophyll content, photochemical efficiency (Fv/Fm), temperature difference (DT) and light absorbance at wavelengths of 480nm, 560nm and 710nm between deficient and control plants. From the all over experiments, the stresses could be first diagnosed in the 3rd to 5th day in general after treatment and the overall diagnosis rate was estimated at more than 50% up to 100%.