Abstract
The author studied the prevention of wind-frictional scratch (abrasion) on citrus fruit and the suppression of transpiration from eggplant by using a surface coating agent (Abion-E) at the experimental field in National Institute of Agricultural Sciences in 1972 and 1973. Abion-E consists of 30% of solid paraffin and the rest of 70% are emulsion (fatty acid) and the others.
The degree of wind-frictional scratch on citrus fruit increases with the increases of wind velocity and treatment time, and with the decrease of consistency of Abion-E. A fruit weight, width and thickness decrease generally with the increase of wind velocity. It is desirable to reduce the wind below 5m/sec at the top of citrus canopy.
The mean yield among the experimental sections of 50, 100, 200 and 400 times solutions was about 9%, scattering from 5 to 13%, and it is better than that of the experimental sections of 800 times solution and the control. In the cases of the experimental sections of 50 to 500 times solutions on the open-field culture, the effect of Abion-E seems to be recognized on the growth and the amount of yield. On the other hand, it is necessary to investigate the effect of Abion-E in the case of the eggplant cultivation in greenhouse without being washed away by precipitation and sprinkling.
