Effect of Succinic acid 2,2- dimethylhydrazide (SADH) on Head Formation of Off-Season Thianchin # 23 Chinese Cabbage

Abstract

The effect of SADH was studied in relation to head formation of off-season growing ‘Thianchin # 23’ (Brassica compestris L. ssp pekinensis) (Lour) Olsson) Chinese Cabbage. Plants were treated with 1,000 2,000 and 4,000 ppm SADH four times at every 4 – day period after they were transplanted for 30 days. It was found that SADH treatment largely increased total fresh weight, head weight and heading percentage as compared to the control. Plants treated with 2,000 and 4,000 ppm, SADH at 2,000 and 4,000 ppm increased 3-fold in head weight higher than the control. The heading efficiency (head weight : outer leaves weight ratio) of the SADH treated plants was about 3-fold higher than the control.