Abstract
This paper reports the results of the studies on the effects of nicotinamide which was isolated from rice hulls on the growth of several crops. 1. Soil treatments with nicotinamide at an effective concentration markedly improved the growth of crops, namely lettuce, radish, tomato, soybean, and red bean plants were accelerated at O.1 to 1 ppm, green pepper, egg plant, and cucumber plants were accelerated at 1OO ppm nicotinamide. 2. The leaf area of lettuce and green pepper plants were increased by nicotinamide. 3. The growth promoting effects with the application of nicotinamide at sowing time were particularly shown after the fifth leaf stage in egg plant and green pepper plants.
